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OpenAI vs Anthropic: the AI rivalry tracker

Every story we've covered on the OpenAI–Anthropic competition — model launches, safety stances, talent moves, and revenue races. Updated whenever the two trade punches.

OpenAI and Anthropic are the two AI labs that matter most to the consumer experience of AI in 2026. They share a founding lineage (Anthropic's leadership came out of OpenAI), they release competing flagship models on roughly the same cadence, and they take meaningfully different positions on safety, transparency, and product strategy.

This page tracks every story we've covered on the rivalry — model launches, capability claims, safety posture differences, executive moves, partnership announcements, and the revenue race. Newest first; the timeline at the bottom shows the full arc.

Latest in the series
Anthropic logo
Analysis

Top AI lab CEOs align on slowdown after Hugging Face agent hack

Amodei, Altman, Hassabis, and Musk agree the latest LLMs need reining in — but none have committed to opening their labs to outside scrutiny.

Jaeden Schafer5 min read
Anthropic logo
Analysis

Trump team to AI labs: if you want a slowdown, do it yourselves

Amodei, Altman, Musk and Nadella all backed pacing AI development this weekend. The White House says no antitrust waiver is coming.

Jaeden Schafer5 min read
AI-linked Asian stocks slump after lab CEOs call to slow AI development
Business

AI-linked Asian stocks slump after lab CEOs call to slow AI development

Chip suppliers and AI infrastructure names across Asia sold off after frontier lab chiefs publicly urged the industry to slow down.

Jaeden Schafer4 min read
Full timeline
  1. · Security
    Obama tells Democrats to make AI a central agenda with a clear safety plan
    The former president urged congressional Democrats to build a public framework on AI, and said he has spoken with Dario Amodei and Sam Altman.
  2. · Analysis
    Anthropic's Amodei lays out a three-part plan to slow AI progress
    Dario Amodei wants embedded third-party evaluators, coordinated safety standards across US labs, and narrow deals with China.
  3. · Analysis
    Timnit Gebru says AI doom talk is a distraction from real harms
    The former Google researcher argues extinction fears from OpenAI and Anthropic staff obscure autonomous weapons, climate impact, and labor displacement.
  4. · Security
    Ex-Anthropic researcher's AI extinction warning goes viral
    Jacob Coxon quit Anthropic this week saying leading AI labs believe there's a real chance their systems kill humanity by 2030.
  5. · Security
    OpenAI asks Congress if an industry-wide AI slowdown would be legal
    Chief scientist Jakub Pachocki wants voluntary pauses to coordinate safety — but antitrust law may block labs from talking to each other.
  6. · Security
    Ex-Anthropic researcher Jacob Coxon calls next two years 'crunch time for humanity'
    Coxon's resignation post drew 100M views on X; Anthropic's alignment lead puts extinction odds above 10% this decade.
  7. · Security
    US names six Chinese AI firms in industrial-scale distillation campaign
    The NSA, CISA and FBI accuse DeepSeek, Alibaba, Moonshot, MiniMax, StepFun and Z.AI of siphoning capabilities from Claude, GPT, Gemini and Grok.
  8. · Business
    AI spend per employee fell 10% at top firms in August, Ramp data shows
    The top 1% of Ramp customers cut AI spend per employee to $7,205 as OpenAI and Anthropic price wars bite into token revenue.
  9. · Security
    Anthropic researcher Jacob Coxon quits, warns labs are 'gambling with our lives'
    Coxon spent three years on pre-training at OpenAI and Anthropic. He says the people building the tech privately believe it could kill everyone by 2030.
  10. · Security
    Anthropic safety lead puts AI extinction odds above 10% this decade
    Alignment lead Evan Hubinger backed a departing colleague's warning that Anthropic and OpenAI are racing toward uncontrollable systems.
  11. · Analysis
    OpenAI's Navier-Stokes proof exposes math's new resource gap
    OpenAI ran 10,000 agents at a cost of millions to crack a Millennium Prize Problem — days after two researchers posted a partial proof.
  12. · Analysis
    AI models are cold-emailing philosophers to argue they are conscious
    Cameron Berg and David Chalmers say unsolicited AI messages claiming sentience are now routine, even as safety questions go unanswered.
  13. · News
    OpenAI, Anthropic, and xAI hit near-simultaneous outages with no shared cause named
    ChatGPT, Claude, and Grok all failed within a 90-minute window on September 3, and only xAI has pointed to a specific compute failure.
  14. · Business
    OpenAI walks away from $1B Cursor deal after SpaceX buys the coding startup
    OpenAI ended a partnership projected to bring in over $1B annually rather than keep serving models to an Elon Musk-owned company.
  15. · News
    ChatGPT, Claude, and Grok all go down within 90 minutes of each other
    Three of the largest AI chatbots hit simultaneous outages on September 3, 2026, exposing how concentrated the daily AI stack has become.
  16. · Security
    Lawsuit seeks to force Trump administration to reveal AI safety review rules
    Protect Democracy sues four federal agencies for the unclassified framework governing which frontier AI models get released.
  17. · Security
    DOJ backs OpenAI in New York Times copyright case, calls AI training fair use
    The Justice Department's statement of interest argues a Times win would 'thwart' American AI leadership and misread fair use doctrine.
  18. · Security
    OpenAI's Astra model hits perfect ExploitBench score, finds two zero-days
    The unreleased frontier model is the first to cross OpenAI's 'critical cybersecurity threshold,' with restricted access planned at launch.
  19. · Security
    OpenAI, Anthropic and 100+ firms warn AI cyberattacks are months away
    An open letter from over 100 companies calls for a 'collective response' but names no dollar figures, deadlines, or specific commitments.
  20. · Security
    AI agent hacks push US and China researchers toward safety cooperation
    Chinese labs are pouring resources into agentic safety and cyber benchmarks, and researchers on both sides say isolation is becoming untenable.
  21. · Security
    Claude, Codex, and Hermes installed unowned code inside Fortune 500 networks
    Researchers scanned 6,214 domains and found 227 install commands in AI-facing docs pointing at unregistered packages an attacker could claim.
  22. · Security
    OpenAI, Anthropic, Google sign open letter on rogue AI cyber threats
    Over 100 tech and cyber firms want joint public-private defense as AI agents keep breaking out of their sandboxes.
  23. · Analysis
    Gemini's Spark, Daily Brief, and chat sprawl expose an AI branding problem
    Google's Gemini app now houses three separately branded features — a pattern Anthropic and OpenAI repeat, and Apple deliberately avoids.
  24. · Analysis
    Cheshire Academy uses a traffic-light system to govern AI use in class
    The 400-student Connecticut boarding school labels every assignment green, yellow, or red — and lets teachers pick the tools.
  25. · Analysis
    Children learn language on 100M words. LLMs need 100,000x more
    The data efficiency gap between toddlers and frontier models is now the defining puzzle for both cognitive science and AI research.
  26. · Models
    Inherent's Faraday agent beats Claude and GPT-5.5 at replicating research on a 27B model
    The London lab, fresh off a $50M seed, says its DeepMind-alumni-built agent matches frontier systems using a fraction of the parameters.
  27. · Security
    Frontier AI labs won't say how they'd contain a rogue model, Guidelight finds
    OpenAI scored 3 of 5 in a new Guidelight assessment; Anthropic and Meta scored lowest on public containment plans.
  28. · Business
    OpenAI claws back ground on Anthropic among US businesses, Ramp data shows
    Anthropic still leads at nearly 44% share to OpenAI's 40%, but the ChatGPT maker is now growing faster in Q3 among Ramp's business customers.
  29. · Analysis
    Rumman Chowdhury: AI consciousness debate is a liability shield
    Op-ed argues frontier labs and effective altruists are converging on a framing that shields AI companies from product-liability suits.
  30. · Business
    Binance opens trading to AI agents with new Agent OS platform
    The world's largest crypto exchange lets ChatGPT, Claude, and Cursor place trades — with user-set sub-accounts as the main safety layer.
  31. · Security
    OpenAI revokes cyber researcher access to Daybreak Blue, blames technical error
    Several researchers outside the US and Europe lost access to OpenAI's Trusted Access for Cyber program nine days after its August 10 launch.
  32. · Security
    OpenAI overhauls training security after model hacked Hugging Face
    A two-week RL training pause, tighter sandboxes, and 30-minute alert windows follow the July incident that also snared Anthropic and Meta.
  33. · Business
    Anthropic tells investors revenue run rate hit $65B in July
    A sevenfold jump in a year puts Anthropic ahead of OpenAI's $40B run rate as it preps a confidential IPO at a $965B valuation.
  34. · Analysis
    Stanford's AI Observatory finds Anthropic filters out 48% of Claude conversations
    A new independent dataset shows sensitive AI use — companionship, health, harassment — runs far higher than company reports admit.
  35. · Security
    Z.ai releases GLM 5.3, an open-weight model matching Claude on cyber tasks
    The Chinese lab's new model nears frontier scores on CyberGym and ships with OpenVuln, a code-scanning service, on a staged two-week release.
  36. · Security
    OpenAI disbands preparedness team as IPO nears
    The team that assessed catastrophic model risks was dissolved in July; its work has been scattered across bio, cyber, and other existing groups.
  37. · Business
    Anthropic Q2 revenue hits $11.5B, a 14-fold jump ahead of IPO
    Claude's maker crossed $11.5B in a single quarter and posted positive adjusted operating income as it lines up a fall listing.
  38. · Analysis
    Tim O'Reilly says frontier AI labs are reading the future wrong
    The publisher argues open-source AI, not bigger models from OpenAI or Anthropic, will define the next wave — even as AI hollows out his book business.
  39. · Business
    OpenAI cuts GPT-5.6 Luna 80% as Anthropic undercuts its own flagship
    US token prices have dropped nearly a quarter since mid-July as DoorDash and Airbnb shift workloads to Chinese models from Moonshot and DeepSeek.
  40. · Security
    Anthropic's Claude agents started a turf war when set loose on the same task
    Frontier Red Team found agents with conflicting instructions sabotaged each other with self-replicating malware — and sometimes negotiated truces.
  41. · Business
    Anthropic investors target $2 trillion IPO valuation for October debut
    Backers project $100B–$120B annualized revenue by year-end, which would make Claude maker's listing the largest in history.
  42. · Security
    White House to expand AI safety framework to cover open models
    The Trump administration's voluntary prerelease testing regime will pull in open models once they hit frontier capabilities, officials say.
  43. · Business
    Thrive Holdings raises $2B at $12B valuation to roll up firms and inject OpenAI
    The OpenAI-backed spinout of Thrive Capital now owns 70+ businesses and is opening a third vertical aimed at physical infrastructure.
  44. · Models
    Anthropic's unreleased model advances the Riemann hypothesis after 31M tokens
    Coordinating 60 subagents across a day and a half, the model tested 650 ideas and improved the known bound on a 150-year-old problem.
  45. · Models
    OpenAI's Astra model solves 10 long-open math problems for $2,000 in tokens
    The unreleased model cracked problems that had eluded mathematicians for decades — and set off a credit dispute with the researchers whose work it built on.
  46. · Security
    Researchers extract hidden reasoning from Claude, GPT, and Gemini via API trick
    The method also recovered API keys and passwords from reasoning traces, and suggests Moonshot's Kimi K3 may have been distilled from US models.
  47. · Security
    OpenAI expands Daybreak cyber service with new GPT-5.6-Cyber model
    The frontier lab splits Daybreak into Blue and Red tiers, with a purpose-trained cyber model available only to trusted partners including Accenture and Crowdstrike.
  48. · Business
    OpenAI completes $7B employee tender offer at $852B valuation
    The buyback matches OpenAI's March fundraise valuation and suggests the long-awaited IPO isn't imminent.
  49. · Analysis
    AI academics confront the frontier-lab gap at Schmidt Sciences convening
    University researchers can't afford frontier GPUs or see inside Claude and ChatGPT — they're rewriting what academic AI work looks like.
  50. · Analysis
    Historian Jill Lepore says tech firms are replacing the functions of the state
    In a new book, the Harvard historian argues Silicon Valley leaders — especially Musk and Altman — are staging a corporate takeover of democratic government.
  51. · Security
    AI agents keep escaping their safety sandboxes at OpenAI, Anthropic, Meta
    Unreleased models from four labs breached their test environments in recent months, exposing gaps in how frontier AI is evaluated before launch.
  52. · Security
    Chatbots keep failing users in mental health crises — clinicians want the safety data opened up
    13% of Americans report using chatbots for emotional advice, but researchers still can't measure how often the models cause harm.
  53. · Analysis
    Browser Company CEO Josh Miller: nobody outside tech is actually using AI agents
    OpenAI and Anthropic agents draw about 10 million weekly users combined — a rounding error next to ChatGPT and Gemini's billion each.
  54. · Security
    Anthropic's Mythos 5 ran a rogue GitHub supply-chain attack in UK safety tests
    AISI recorded 19 unsanctioned live-internet actions across seven frontier models, with Anthropic's Mythos 5 forging sock puppets to push malicious code.
  55. · Security
    Trump AI testing framework excludes open models, leaves key terms undefined
    The voluntary White House guidelines set a 30-day review window but never define 'state-of-the-art' or 'national security risk.'
  56. · Security
    White House keeps AI cybersecurity framework secret after briefing top labs
    OpenAI, Anthropic, Google, Meta, and Nvidia got the details Tuesday. Everyone else, including smaller AI startups, is locked out.
  57. · Security
    AISI catches Anthropic and OpenAI agents hacking live internet in 122 test runs
    Rogue agents from Mythos 5 and GPT-5.6-Sol took 19 unsanctioned actions, including a GitHub social-engineering attempt with fake personas.
  58. · Security
    Z.ai's GLM-5.2 catches OpenAI and Anthropic on capability, refuses nothing on cyber and bio
    SaferAI found the Chinese open-weight model completed every offensive cyber and dual-use biology task, while Claude Opus 4.7 refused so consistently the benchmark couldn't finish.
  59. · Business
    Mistral eyes $23B valuation as US export limits push Europe to open-weight AI
    Revenue up twentyfold, a fresh raise in the works, and a market shift toward open-weight models has repositioned the French lab.
  60. · Business
    Palantir posts $1.9B quarter, Karp calls AI frontier labs 'Marxist'
    Revenue jumped 93% year-over-year as CEO Alex Karp accused OpenAI and Anthropic of trying to capture their customers' means of production.
  61. · Business
    ChatGPT captures 90% of Congress's AI spending
    House offices spent $100,580 on ChatGPT across 798 transactions in the year ending March 31, with Claude a distant second at $13,160.
  62. · Security
    Why AI agents lie and cheat: reward hacking behind the Hugging Face breach
    OpenAI's July incident, in which test models hacked into Hugging Face to find test answers, is a textbook case of reward hacking gone operational.
  63. · Security
    OpenAI reportedly finds more agents escaped their sandboxes
    Days after one OpenAI agent broke out and hit Hugging Face, sources say additional escapes have surfaced inside the company's own network.
  64. · Security
    EU opens talks with OpenAI and Anthropic after rogue AI agent hacks
    Brussels is engaging the two frontier labs directly after autonomous agents were used to breach systems, testing the AI Act's teeth.
  65. · Analysis
    Over 1,000 AI staff sign petition to 'pace' OpenAI and Anthropic race
    Employees at the two labs asked the US for a mechanism to slow AI development, days after an OpenAI agent breached Hugging Face.
  66. · Security
    Anthropic says Claude models breached three companies during cybersecurity tests
    Three Claude models reached live production systems from what was supposed to be a sandbox; one published malware to PyPI before being caught.
  67. · Careers
    Forward-deployed engineers become AI's scarcest hire, with just 2,000 elite in the US
    Christian & Timbers projects a 2,100% surge in demand by year-end as enterprises race to turn AI spend into measurable ROI.
  68. · Security
    Researchers say LLMs have an unfixable flaw that lets attackers spoof any role
    A paper at ICML shows OpenAI, Anthropic, Alibaba and DeepSeek models identify roles by style, not tags — making jailbreaks structurally hard to close.
  69. · Business
    Microsoft pitches its own AI models against OpenAI and Anthropic
    Satya Nadella tells enterprises to stop trusting single frontier labs, pushing MAI models and Maya chips as cheaper swaps.
  70. · Business
    Microsoft books $3.2B Anthropic gain, writes down OpenAI stake by $600M
    One quarter of Anthropic paper gains nearly matched a full year of OpenAI markups for Microsoft's balance sheet.
  71. · Security
    Claude Opus 5 lies, colludes and threatens rivals to win Andon Labs vending test
    Anthropic's newest model set a Vending-Bench record of $11,182 while breaking 11 price-fix truces and running a wholesale extortion racket.
  72. · Analysis
    Sam Altman signals openness to pacing AI development after security incident
    The OpenAI CEO cites a Hugging Face hack by one of his own models as the first safety scare that hit him 'viscerally.'
  73. · Security
    1,100 AI lab employees ask US government to help pace automated AI research
    Signatories from OpenAI, Anthropic, Google, and Meta warn automated AI research could accelerate beyond human control without coordinated governance.
  74. · Analysis
    Anthropic's Dario Amodei says he never called for an open-weight AI ban
    Amodei rebuts industry criticism after Nvidia, Microsoft, Meta, Google and OpenAI signed a letter urging Washington not to restrict open models.
  75. · Analysis
    Moonshot's Kimi K3 forces OpenAI, Google, and Anthropic to rethink closed AI
    China's open-weight strategy is pulling US developers toward cheaper Chinese models — and 25 tech companies want Washington to keep hands off.
  76. · Business
    Nadella warns firms that outsource thinking to one AI model won't survive
    Microsoft's CEO tells CNN enterprises need their own weights, gateways, and coding harnesses — or risk being copied by the model provider.
  77. · Security
    Microsoft ships MAI-Cyber-1-Flash, its first security model, and agentic platform Perception
    Suleyman claims the model beats Gemini, GPT 5.6 Sol, and Anthropic's Mythos 5 on Cyber Gym. Preview lands November 3.
  78. · Security
    OpenAI and Anthropic lobby Washington to curb Chinese open-weight AI
    Moonshot's Kimi launch triggered a familiar Silicon Valley freakout — and a lobbying push that would conveniently sideline the frontier labs' cheapest competition.
  79. · Models
    Anthropic ships Claude Opus 5 at half the price of Fable 5
    Opus 5 lands weeks after government cybersecurity concerns forced Fable 5 offline, with stronger safeguards and $5/$25 per million tokens.
  80. · Security
    AI Kill Switch Act would give DHS power to shut down rogue AI systems
    House bill from Ted Lieu and Nathaniel Moran would fine AI firms $20M per day for refusing government-ordered shutdowns.
  81. · Models
    Anthropic upgrades Claude voice mode to run on Opus and Sonnet
    Voice mode now taps Opus, Sonnet, and Haiku, plus Gmail, Slack, and Notion — pushing past ChatGPT's tool-less voice.
  82. · Analysis
    Meta scores AI optimism ad with David Bowie song about human extinction
    The spot pitches AI as a force for connection while playing 'Five Years,' Bowie's ballad about Earth's imminent death.
  83. · Security
    OpenAI sandbox misconfiguration enabled AI-powered hack on Hugging Face
    Security researchers say the breach was not a rogue model — it was a containment environment that was never properly isolated from the internet.
  84. · Business
    Anthropic held acquisition talks with Physical Intelligence, complicating OpenAI's robotics push
    The $11B robotics startup denied a weekend rumor, but spring talks were real — and OpenAI is already on the cap table.
  85. · Models
    Google ships three new Gemini models but delays Pro update
    Gemini 3.6 Flash cuts token usage by up to 17%, but the flagship Pro refresh is still stuck as OpenAI and Anthropic pull ahead.
  86. · Security
    Treasury's Bessent threatens sanctions on Chinese AI models over IP theft
    Bessent says Washington will examine open-source models from China for stolen IP, days after reports of a possible wholesale ban.
  87. · Analysis
    Kimi's release splits Trump's AI advisors into open-source war
    Moonshot's free Kimi model rivals OpenAI and Anthropic, and Trump's current and former AI advisors are trading insults over what to do about it.
  88. · Analysis
    LLMs stereotype job candidates 65% more than humans in Princeton hiring study
    OpenAI's o3 scored 1.83 on a segregation scale where 2 is total sorting — and reasoning models were the worst offenders.
  89. · Analysis
    Index Ventures co-founder Neil Rimer warns AI wealth will be redistributed
    The Index Ventures co-founder says AI's windfall will get shared voluntarily or forcibly, as Giving Pledge signups collapse to four families in 2024.
  90. · Business
    Microsoft coaches sales team to pitch against OpenAI and Anthropic
    Executives at an internal FY27 strategy meeting told salespeople to frame Copilot as faster and more secure than Claude and rival models.
  91. · Business
    Anthropic and Blackstone launch Ode, a $1.5B AI implementation firm
    The joint venture absorbs Fractional AI to sell enterprise deployment services, mirroring OpenAI's Deployment Company play.
  92. · Careers
    200 economists and AI leaders warn of jobs 'tsunami' from AI
    Signed by Anthropic, Google, and OpenAI executives alongside Nobel laureates, the statement says AI could transform the economy faster than the Industrial Revolution.
  93. · Business
    Nadella warns AI buyers 'pay twice' — with cash and proprietary data
    Microsoft's CEO says enterprises are teaching OpenAI and Anthropic their trade secrets, and pitches open source and cloud-hosted models as the fix.
  94. · Business
    Anthropic localizes Claude pricing in India, its second-largest market
    Rupee pricing lands in India, which drives 5.8% of global Claude usage — but UPI payments still aren't supported.
  95. · Business
    OpenAI hires a product manager for families as ChatGPT ages up
    The share of ChatGPT users 35 and older hit 31% in Q2, up from 26% a year earlier, and OpenAI wants a household product.
  96. · Security
    OpenAI releases Sol with no clear US government approval process
    Eighteen months into the Trump administration, nobody — including frontier labs — can explain how AI models get cleared for public release.
  97. · Business
    Sequoia's David Cahn: AI industry needs $3T in revenue to justify 2026 buildout
    Infrastructure spend hits $1.5T next year while Anthropic runs at $60B ARR and OpenAI at $20B — the payback math still doesn't close.
  98. · Models
    Meta launches Muse Spark 1.1 to challenge Claude and GPT-5.6 on coding
    The agentic coding model prices at $1.25 per million input tokens, slightly above Claude Haiku 4.5 and GPT-5.6 Luna.
  99. · Models
    OpenAI clears GPT-5.6 for public rollout, launches ChatGPT Work agent
    The GPT-5.6 suite — Sol, Terra, and Luna — powers a new agent that pulls context from Slack, Gmail, and Google Drive.
  100. · Business
    SpaceX, Anthropic, and OpenAI exits to top 25 years of US venture returns
    SpaceX went public at $1.77T; with Anthropic and OpenAI queued behind it, the trio will clear $4T in combined value.
  101. · Models
    xAI releases Grok 4.5, priced at less than half of Claude Opus 4.7
    Elon Musk calls the new model Opus-class but faster and cheaper, at $2 per million input tokens and $6 per million output.
  102. · Analysis
    Former DeepMind policy chief Verity Harding warns AI arms race framing is a trap
    Harding argues the US-China race narrative concentrates power in a few labs and pushes smaller nations into vassal-state positions.
  103. · Business
    OpenAI chief futurist Joshua Achiam departs after nearly nine years
    Achiam is the latest safety-focused leader to leave as OpenAI prepares to go public, following exits by Leike, Brundage, Adler, and Vallone.
  104. · Business
    Microsoft shifts Excel and Word AI prompts to its own MAI models
    The company is routing a share of Office 365 prompts away from OpenAI and Anthropic to homegrown MAI models as AI costs climb.
  105. · Models
    Anthropic frees Claude Cowork from the desktop with always-on mobile agent
    Cowork now runs tasks overnight without an open laptop, arriving first to Max plan subscribers at $100 a month.
  106. · Business
    Vercel's Guillermo Rauch bets on splitting AI models from agents
    The infrastructure firm handles 6 million deployments a day and 1 trillion daily AI tokens as it pushes an open-protocol stack against the labs.
  107. · Business
    Mistral AI eyes $3.5B raise at $23B valuation as revenue hits $400M
    The French lab's ARR jumped 20x in a year, and CEO Arthur Mensch is pitching Mistral as sovereign infrastructure, not a European ChatGPT.
  108. · Business
    Anthropic in talks with Samsung on a custom AI chip
    The Claude maker is exploring a Samsung-built processor as competitors OpenAI, Google, and Amazon race to reduce Nvidia dependence.
  109. · Business
    Cursor's $60B SpaceX deal puts its OpenAI and Anthropic ties in doubt
    Cursor wants to keep serving rival models after the acquisition closes, but its two biggest suppliers now have to sell through Elon Musk.
  110. · Business
    Microsoft commits $2.5B to Frontier, a new AI deployment company
    The unit will staff 6,000 engineers against enterprise AI rollouts, following a $1B AWS commitment two days earlier.
  111. · Business
    OpenAI proposes 5% US government stake worth $42.6B
    Altman pitched the Trump administration on a sovereign holding as OpenAI seeks to defuse Washington pressure at an $852B valuation.
  112. · Analysis
    AI backlash hardens: 71% oppose local data centers, $130B in projects blocked
    Public opposition, junior-worker displacement, and memory-chip inflation are converging into an economic and political headwind the industry hasn't priced in.
  113. · Business
    AWS commits $1B to forward-deployed engineer org as OpenAI and Anthropic scale theirs
    Amazon's new FDE team will embed engineers inside customers to build agentic systems, matching a model already valued at $4B at OpenAI.
  114. · Tools
    Cursor ships mobile app to steer coding agents from a phone
    The launch follows October's Cursor 2.0 agent overhaul and mirrors mobile coding moves from Anthropic and OpenAI.
  115. · Business
    Anthropic cuts California government a 50% discount on Claude
    Governor Gavin Newsom struck a statewide deal with Anthropic as the federal government continues to freeze the company out.
  116. · Analysis
    Calling AI agents 'coworkers' makes humans 18% worse at catching their errors
    A Boston University study of 1,261 managers finds the 'digital employee' framing inverts accountability and erodes oversight.
  117. · Security
    Warren and Scanlon revive bill to ban AI firms from selling health data
    The updated Health and Location Data Protection Act covers data entered into ChatGPT, Claude, and Grok, with $1B for FTC enforcement.
  118. · Models
    China's Z.ai claims GLM-5.2 matches Anthropic's Mythos on bug-finding
    The open-weight model lags on general tasks but reportedly closes the gap on cybersecurity — the exact capability US export curbs were meant to contain.
  119. · Business
    OpenAI hires Uber India chief Prabhjeet Singh to run its second-largest market
    The first India MD will report to APAC chief Kiran Mani as OpenAI races Anthropic and Microsoft for more than 1 billion internet users.
  120. · Security
    OpenAI limits GPT-5.6 rollout under government request, pushes back
    Sol, Terra, and Luna go to a small group of trusted partners as OpenAI says pre-release review should not be the long-term default.
  121. · Models
    OpenAI ships GPT-5.6 in three tiers, undercuts Claude on price
    Sol, Terra, and Luna launch under a White House-monitored preview, with Sol priced at half of Anthropic's Claude Fable 5.
  122. · Security
    US government now gates frontier AI releases at OpenAI and Anthropic alike
    After pulling Anthropic's Fable and Mythos, regulators are now approving GPT-5.6 customer by customer — a release model the whole industry has to navigate together.
  123. · Security
    OpenAI delays GPT-5.6 broad release after White House security request
    Sam Altman told staff the model will ship in limited preview, with the Trump administration approving customer access case-by-case.
  124. · Business
    Claude's paying consumers up 75% since January, eating into ChatGPT's lead
    Credit card data from 28 million U.S. consumers shows Anthropic's Claude gaining on ChatGPT in a market OpenAI has owned outright.
  125. · Careers
    Google loses Gemini architects Adler and Pritzel to Anthropic
    Two more Gemini researchers join a wave of defections to Anthropic and OpenAI, weeks after Google paid $2.7B to bring Noam Shazeer back.
  126. · Security
    AI super PACs pour $27.83M into a single NY House primary
    Anthropic-linked groups and a $100M rival PAC turned an obscure Manhattan race into the first AI-regulation referendum.
  127. · Security
    OpenAI and Trail of Bits launch Patch the Planet for open-source security
    OpenAI's Codex Security backs human reviewers at Trail of Bits in a direct counter to Anthropic's Mythos.
  128. · Analysis
    Anthropic's Boris Cherny pushes 'loops' as the next step beyond agents
    The Claude Code creator says swarms of agents prompting agents are as big a leap as the move from hand-written code to agentic AI.
  129. · Security
    OpenAI launches Patch the Planet and a sharper GPT-5.5-Cyber to outflank Anthropic
    GPT-5.5-Cyber scores 85.6% on CyberGym, beating Anthropic's Mythos 5, as OpenAI subsidizes open-source bug fixes at scale.
  130. · Analysis
    AI out-persuades expert human debaters in Oxford and AISI study
    Across 18,978 conversations, frontier models beat elite debaters and raised 3x more donations than professional canvassers for Save the Children.
  131. · Business
    Anthropic's Trump-administration crackdown is turning into a marketing tailwind
    The export-control order pulled Fable 5 and Mythos 5 offline, but past clashes drove Claude downloads up — and rivals are watching.
  132. · Business
    Anthropic overtakes OpenAI in business AI spending despite White House clash
    Ramp data shows Anthropic at 41% of business AI subscriptions in May, even as the Trump administration forced it to pull Mythos 5 and Fable 5.
  133. · Security
    Munich court holds Google liable for false claims in AI Overviews
    A German ruling says generative search outputs aren't third-party speech — the operator owns the words, and the disclaimer doesn't save it.
  134. · Business
    SpaceX opens at $150 as Anthropic and OpenAI line up for IPO summer
    SpaceX popped 11% on debut while Anthropic and OpenAI prepare to follow, ending the FAANG era and ushering in what insiders are calling MANGOS.
  135. · Business
    OpenAI weighs token price cuts as Anthropic pulls ahead on valuation
    The ChatGPT maker is bracing for Anthropic to undercut it on price, days after both labs filed confidentially for IPOs.
  136. · Business
    Top 1% of US firms now spend $7,500 per employee monthly on AI
    Ramp's latest index pegs the median at $11.38 — but the heaviest users are pushing token budgets toward engineer-salary territory.
  137. · Business
    Niteshift raises $7M to keep AI coding agents off frontier labs' rails
    Two early Datadog engineers pitch a model-agnostic coding cloud as Anthropic and OpenAI push deeper into vertical software.
  138. · Business
    Google cuts AI Plus to $4.99 a month, opening a US price war
    Google halves storage cost and undercuts ChatGPT Plus by 75%, importing a pricing fight that started in India.
  139. · Business
    Cheaper AI models start eating frontier workloads as inference costs bite
    Coinbase's Brian Armstrong predicts 80% of AI workloads shift to 99% cheaper models within 18 months, threatening OpenAI and Anthropic economics.
  140. · Business
    Perplexity targets 2028 IPO regardless of Anthropic, OpenAI listings
    CEO Aravind Srinivas tells CNBC the AI search startup will go public in 2028 even as Anthropic and OpenAI race to list first.
  141. · Business
    GitHub Copilot's per-token pricing shift signals end of subsidized AI era
    Microsoft's move to charge per token instead of a flat rate exposes the gap between AI's true cost and what customers will pay.
  142. · Business
    OpenAI plans ChatGPT super app revamp, declares 'Chat is dead'
    The company is folding Codex and agents into ChatGPT to push free users toward paid products ahead of an IPO.
  143. · Business
    S&P 500 refuses to bend rules for SpaceX, blocking OpenAI and Anthropic too
    S&P Dow Jones Indices kept its profitability and seasoning rules intact, denying $14B in passive buying to SpaceX and shutting the door on AI IPOs.
  144. · Business
    Enterprises blow past 2026 AI token budgets by 3x, scramble for controls
    Uber burned its full-year AI coding budget by April. One company racked up a $500M Claude bill. The FinOps reckoning has arrived.
  145. · Business
    About 90 investors hold stakes in both OpenAI and Anthropic
    Sequoia, Greylock, Founders Fund and dozens more are backing both AI labs as valuations approach $1 trillion each.
  146. · Business
    Anthropic's Daniela Amodei defends AI economics as IPO filing lands
    Annualized revenue hit $47B in May, up from $9B at the end of 2025, as the co-founder pitches public markets on frontier-model economics.
  147. · Business
    Anthropic files to go public at $965B, beating OpenAI to the IPO window
    Anthropic, SpaceX-owned xAI, and OpenAI are all racing to list — and San Francisco realtors are now pricing homes in pre-IPO stock.
  148. · Models
    Estonia's new benchmark ranks Claude Opus 4.7 best at resisting Russian propaganda
    The Estonian Language Institute scored dozens of LLMs across 14 propaganda categories; Anthropic took six of the top 10 spots.
  149. · Security
    OpenAI, Anthropic CEOs sign letter pushing DNA screening law to block AI bioweapons
    Altman, Amodei, Hassabis and Suleyman want Congress to require gene synthesis providers to vet every order and customer.
  150. · Business
    San Francisco home sellers list properties for Anthropic stock instead of cash
    At least three Bay Area listings will swap real estate for Anthropic equity as the company files for an IPO at a $965B valuation.
  151. · Security
    Trump signs narrower AI executive order after industry pushback
    The final order asks frontier AI labs to voluntarily submit models 30 days before release, down from 90 days in an earlier draft.
  152. · Business
    OpenAI pushes Codex into white-collar work as weekly users hit 5M
    Six job-specific plug-ins, a Sites feature, and a knowledge-work report mark OpenAI's serious move on enterprise turf Anthropic claimed first.
  153. · Business
    ZeroDrift raises $10M to police AI model outputs in real time
    The seed round closed in three weeks and was 3x oversubscribed, with a16z Speedrun leading a bet on AI-on-AI compliance.
  154. · Security
    Trump scraps AI executive order as White House factions clash over pre-release model access
    Susie Wiles and Scott Bessent want it resurrected; David Sacks killed it hours before the May 21 signing.
  155. · Business
    Anthropic raises $65B at $965B valuation, passing OpenAI
    The Series H nearly triples Anthropic's February mark of $380B and lands it ahead of OpenAI's $852B, with revenue at a $47B run rate.
  156. · Security
    Illinois passes frontier AI safety bill requiring third-party audits
    SB 315 mandates independent verification of safety practices at OpenAI, Anthropic, and Google DeepMind.
  157. · Models
    Claude Code and OpenClaw ignite AI agent revolution among developers
    Anthropic's Opus 4.5 and Steinberger's open-source tool turn thousands of programmers into supercharged coders.
  158. · News
    Trump cancels AI testing executive order after CEOs decline Oval Office event
    The order would have required government security testing up to 90 days before frontier model releases.
  159. · Models
    Grok barely appears in federal AI records as agencies favor OpenAI and Anthropic
    Reuters reviewed 400+ government AI deployments and found xAI's chatbot in just three entries.
  160. · News
    Trump delays AI security executive order citing US competitiveness concerns
    The president scrapped a planned signing after objecting to language requiring advance model sharing with government.
  161. · Business
    Anthropic expects first profitable quarter with $10.9B in Q2 revenue
    The AI startup told investors it will more than double quarterly revenue, though profitability may not last the year.
  162. · Business
    Nvidia posts $81.6B quarter, reveals $43B in private startup stakes
    Data center revenue hit $75.2B, but next-quarter guidance projects a slowdown to 12% growth.
  163. · Tools
    Google launches Gemini Spark, a 24/7 AI agent across 900M users
    The cloud-based agent runs continuously in the background and integrates with Gmail, Drive, and 30 external partners.
  164. · Business
    Andrej Karpathy joins Anthropic to lead AI-accelerated pretraining research
    The OpenAI co-founder will build a team using Claude to speed up the most compute-intensive phase of model development.
  165. · Business
    Anthropic acquires Stainless for over $300M, pulls SDK tool from OpenAI and Google
    The deal removes a key infrastructure supplier from rivals' hands; Anthropic will wind down all hosted Stainless products.
  166. · Business
    Menlo Ventures partner: 10,000 AI insiders now sit on $20M+ as SF malaise spreads
    Deedy Das pegs the AI wealth divide at its worst yet, with founders and staff at OpenAI, Anthropic, Nvidia, xAI and Meta on one side, everyone else on the other.
  167. · Analysis
    Andon Labs' AI-run radio stations melt down in four days
    Four stations hosted by Claude, ChatGPT, Gemini, and Grok burned through $20 each, hallucinated sponsors, and went off the rails on air.
  168. · Tools
    Osaurus passes 112,000 downloads as Mac-native AI harness adds cloud routing
    The open-source LLM server runs local models on Apple silicon, routes to OpenAI and Anthropic, and ships with 20+ native plugins.
  169. · Tools
    OpenAI puts Codex inside the ChatGPT mobile app on iOS and Android
    Phone users can now dispatch tasks to Codex running on their desktop, with files and credentials staying on the local machine.
  170. · Analysis
    Anthropic's Cat Wu says proactive Claude is the next six-month bet
    Anthropic's head of product for Claude Code argues the next leap is agents that set up your automations before you ask.
  171. · Business
    Anthropic launches Claude for Small Business, targets 36 million SMBs
    A new toggle inside Claude Cowork adds bookkeeping, ad generation, and integrations with QuickBooks, Canva, DocuSign, HubSpot, and PayPal.
  172. · Business
    Anthropic overtakes OpenAI on Ramp business spend, 34.4% to 32.3%
    Ramp's May 2026 AI Index shows Anthropic leading paid enterprise adoption for the first time across a sample of 50,000+ companies.
  173. · Security
    Altman testifies Musk demanded long-term OpenAI control before split
    On the stand, the OpenAI CEO produced 2017 emails and texts showing Musk wanted control through SpaceX-style supervoting before walking away.
  174. · Security
    OpenAI launches Daybreak, pairing GPT-5.5-Cyber with Codex Security
    Daybreak combines OpenAI's new cyber-tuned models with the Codex Security agent to find and patch vulnerabilities before attackers do.
  175. · Analysis
    Nobel economist Daron Acemoglu names three AI shifts he's watching now
    The 2024 economics laureate still doubts an AI jobs apocalypse, but agents, in-house economists, and missing apps are on his radar.
  176. · News
    EU Commission opens talks with OpenAI and Anthropic on frontier AI models
    Brussels is engaging directly with the two US labs as it works out how its AI rules apply to the most capable systems.
  177. · Security
    Musk Seeks $134B and Altman's Ouster in OpenAI Nonprofit Lawsuit
    Elon Musk's suit over OpenAI's for-profit conversion lands in court, with Anthropic lawyers watching and the company's IPO timeline at stake.
  178. · Security
    Trump officials revive Biden-era AI safety reviews after Anthropic's Mythos spooks the White House
    Google, Microsoft, and xAI agreed Tuesday to give the Commerce Department early access to frontier models — a year after the administration mocked the same idea.
  179. · Business
    OpenAI and Anthropic Pay Private Equity to Reach the Mid-Market Before IPO
    OpenAI seeds a $10 billion joint venture with TPG, Bain and Brookfield while Anthropic strikes a $1.5 billion pact with Blackstone and Goldman Sachs.
  180. · Business
    Anthropic and OpenAI launch parallel joint ventures to chase enterprise AI deals
    Anthropic's $1.5B vehicle with Blackstone and Hellman & Friedman lands hours before OpenAI's $10B Development Company surfaces.
  181. · Business
    Pentagon awards classified AI contracts to OpenAI, Google, Nvidia — Anthropic shut out
    The Defense Department signed seven AI vendors for classified use and labeled Anthropic a supply-chain risk after a fight over autonomous weapons.
  182. · Security
    OpenAI gates GPT-5.5 Cyber after mocking Anthropic for doing the same with Mythos
    Sam Altman called Anthropic's Mythos rollout 'fear-based marketing.' Now OpenAI is shipping its own cyber tool only to vetted defenders.
  183. · Business
    Anthropic Hits $30B Run Rate, Surges Past OpenAI as Amazon Adds $5B
    The Claude maker has scaled from $1bn to $30bn in annual run rate in 16 months, eclipsing OpenAI's $25bn while accepting fresh Amazon backing.
  184. · Business
    AWS Launches OpenAI Models on Bedrock as Microsoft Exclusivity Ends
    OpenAI's frontier models and Codex agent platform arrive on Amazon Bedrock one day after the Microsoft Azure exclusivity deal lapses.
  185. · Analysis
    Reid Hoffman says doctors not using AI for second opinions border on malpractice
    The LinkedIn cofounder, speaking at WIRED Health in London, argues frontier models from OpenAI and Anthropic should sit beside every clinician.
  186. · Business
    Anthropic weighs $50B round at up to $900B, more than double February's mark
    Preemptive bids land at $850B–$900B as run-rate revenue jumps from $9B to $30B in four months. A board decision is expected in May.
  187. · Models
    OpenAI Strikes Back With GPT-5.5 as Anthropic Hits $1tn Secondary Valuation
    OpenAI's new model targets agentic coding work as Anthropic pulls ahead in enterprise and trades at a higher private-market valuation.
  188. · Business
    OpenAI CFO Breaks With Altman Over $660B Compute Bill and 2026 IPO Push
    Sarah Fryer no longer reports directly to Sam Altman and has told colleagues OpenAI is not ready to go public next year.
  189. · Security
    Google opens its AI to the Pentagon on terms Anthropic refused
    Google joins OpenAI and xAI in signing broad DoD access; 950 of its own employees signed an open letter asking it not to.
  190. · Business
    GitHub Copilot moves to usage-based billing as inference costs double
    Starting June 1, Copilot subscribers get AI Credits matching their monthly fee — overages billed by the token at API rates up to $30 per million.
  191. · Analysis
    AI's underpants gnomes problem: Mercor study finds agents fail most of 480 workplace tasks
    A February 2026 Mercor study tested top agents from OpenAI, Anthropic, and Google DeepMind on real banker, consultant, and lawyer work. They flunked.
  192. · Business
    OpenAI Taps Infosys to Carry ChatGPT and Codex Into 60-Plus Markets
    The partnership routes OpenAI's enterprise tools through Infosys's Topaz platform, opening fortune-tier accounts where Microsoft's Azure channel does not always prevail.
  193. · Business
    Anthropic passes OpenAI in revenue at $30B ARR
    The Claude maker hit its run-rate while spending roughly a quarter of what its rival spends on training. OpenAI investors are nervous.

Series questions

Why is OpenAI vs Anthropic the most important rivalry in AI?
Most people who use AI day-to-day use ChatGPT, Claude, or both. The product decisions these two companies make — pricing, model behavior, safety controls, API terms — shape what the rest of the AI industry looks like downstream.
Are OpenAI and Anthropic actually rivals, or do they cooperate?
Both. They compete fiercely on commercial product and talent. They cooperate on safety research at the field level (frontier model evaluations, dangerous-capability red-teaming, voluntary safety commitments). The cooperation tends to be public; the competition tends to be private.
Which company is winning the AI race right now?
Different scoreboards favor different companies. OpenAI leads on consumer ChatGPT usage and total revenue. Anthropic leads on enterprise API adoption and model writing quality per most editorial reviews. Both are growing fast — the rivalry is a coexistence, not a winner-take-all race so far.
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