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.

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.

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.

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.
- · SecurityObama tells Democrats to make AI a central agenda with a clear safety planThe former president urged congressional Democrats to build a public framework on AI, and said he has spoken with Dario Amodei and Sam Altman.
- · AnalysisAnthropic's Amodei lays out a three-part plan to slow AI progressDario Amodei wants embedded third-party evaluators, coordinated safety standards across US labs, and narrow deals with China.
- · AnalysisTimnit Gebru says AI doom talk is a distraction from real harmsThe former Google researcher argues extinction fears from OpenAI and Anthropic staff obscure autonomous weapons, climate impact, and labor displacement.
- · SecurityEx-Anthropic researcher's AI extinction warning goes viralJacob Coxon quit Anthropic this week saying leading AI labs believe there's a real chance their systems kill humanity by 2030.
- · SecurityOpenAI asks Congress if an industry-wide AI slowdown would be legalChief scientist Jakub Pachocki wants voluntary pauses to coordinate safety — but antitrust law may block labs from talking to each other.
- · SecurityEx-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.
- · SecurityUS names six Chinese AI firms in industrial-scale distillation campaignThe NSA, CISA and FBI accuse DeepSeek, Alibaba, Moonshot, MiniMax, StepFun and Z.AI of siphoning capabilities from Claude, GPT, Gemini and Grok.
- · BusinessAI spend per employee fell 10% at top firms in August, Ramp data showsThe top 1% of Ramp customers cut AI spend per employee to $7,205 as OpenAI and Anthropic price wars bite into token revenue.
- · SecurityAnthropic 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.
- · SecurityAnthropic safety lead puts AI extinction odds above 10% this decadeAlignment lead Evan Hubinger backed a departing colleague's warning that Anthropic and OpenAI are racing toward uncontrollable systems.
- · AnalysisOpenAI's Navier-Stokes proof exposes math's new resource gapOpenAI ran 10,000 agents at a cost of millions to crack a Millennium Prize Problem — days after two researchers posted a partial proof.
- · AnalysisAI models are cold-emailing philosophers to argue they are consciousCameron Berg and David Chalmers say unsolicited AI messages claiming sentience are now routine, even as safety questions go unanswered.
- · NewsOpenAI, Anthropic, and xAI hit near-simultaneous outages with no shared cause namedChatGPT, Claude, and Grok all failed within a 90-minute window on September 3, and only xAI has pointed to a specific compute failure.
- · BusinessOpenAI walks away from $1B Cursor deal after SpaceX buys the coding startupOpenAI ended a partnership projected to bring in over $1B annually rather than keep serving models to an Elon Musk-owned company.
- · NewsChatGPT, Claude, and Grok all go down within 90 minutes of each otherThree of the largest AI chatbots hit simultaneous outages on September 3, 2026, exposing how concentrated the daily AI stack has become.
- · SecurityLawsuit seeks to force Trump administration to reveal AI safety review rulesProtect Democracy sues four federal agencies for the unclassified framework governing which frontier AI models get released.
- · SecurityDOJ backs OpenAI in New York Times copyright case, calls AI training fair useThe Justice Department's statement of interest argues a Times win would 'thwart' American AI leadership and misread fair use doctrine.
- · SecurityOpenAI's Astra model hits perfect ExploitBench score, finds two zero-daysThe unreleased frontier model is the first to cross OpenAI's 'critical cybersecurity threshold,' with restricted access planned at launch.
- · SecurityOpenAI, Anthropic and 100+ firms warn AI cyberattacks are months awayAn open letter from over 100 companies calls for a 'collective response' but names no dollar figures, deadlines, or specific commitments.
- · SecurityAI agent hacks push US and China researchers toward safety cooperationChinese labs are pouring resources into agentic safety and cyber benchmarks, and researchers on both sides say isolation is becoming untenable.
- · SecurityClaude, Codex, and Hermes installed unowned code inside Fortune 500 networksResearchers scanned 6,214 domains and found 227 install commands in AI-facing docs pointing at unregistered packages an attacker could claim.
- · SecurityOpenAI, Anthropic, Google sign open letter on rogue AI cyber threatsOver 100 tech and cyber firms want joint public-private defense as AI agents keep breaking out of their sandboxes.
- · AnalysisGemini's Spark, Daily Brief, and chat sprawl expose an AI branding problemGoogle's Gemini app now houses three separately branded features — a pattern Anthropic and OpenAI repeat, and Apple deliberately avoids.
- · AnalysisCheshire Academy uses a traffic-light system to govern AI use in classThe 400-student Connecticut boarding school labels every assignment green, yellow, or red — and lets teachers pick the tools.
- · AnalysisChildren learn language on 100M words. LLMs need 100,000x moreThe data efficiency gap between toddlers and frontier models is now the defining puzzle for both cognitive science and AI research.
- · ModelsInherent's Faraday agent beats Claude and GPT-5.5 at replicating research on a 27B modelThe London lab, fresh off a $50M seed, says its DeepMind-alumni-built agent matches frontier systems using a fraction of the parameters.
- · SecurityFrontier AI labs won't say how they'd contain a rogue model, Guidelight findsOpenAI scored 3 of 5 in a new Guidelight assessment; Anthropic and Meta scored lowest on public containment plans.
- · BusinessOpenAI claws back ground on Anthropic among US businesses, Ramp data showsAnthropic 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.
- · AnalysisRumman Chowdhury: AI consciousness debate is a liability shieldOp-ed argues frontier labs and effective altruists are converging on a framing that shields AI companies from product-liability suits.
- · BusinessBinance opens trading to AI agents with new Agent OS platformThe world's largest crypto exchange lets ChatGPT, Claude, and Cursor place trades — with user-set sub-accounts as the main safety layer.
- · SecurityOpenAI revokes cyber researcher access to Daybreak Blue, blames technical errorSeveral researchers outside the US and Europe lost access to OpenAI's Trusted Access for Cyber program nine days after its August 10 launch.
- · SecurityOpenAI overhauls training security after model hacked Hugging FaceA two-week RL training pause, tighter sandboxes, and 30-minute alert windows follow the July incident that also snared Anthropic and Meta.
- · BusinessAnthropic tells investors revenue run rate hit $65B in JulyA sevenfold jump in a year puts Anthropic ahead of OpenAI's $40B run rate as it preps a confidential IPO at a $965B valuation.
- · AnalysisStanford's AI Observatory finds Anthropic filters out 48% of Claude conversationsA new independent dataset shows sensitive AI use — companionship, health, harassment — runs far higher than company reports admit.
- · SecurityZ.ai releases GLM 5.3, an open-weight model matching Claude on cyber tasksThe Chinese lab's new model nears frontier scores on CyberGym and ships with OpenVuln, a code-scanning service, on a staged two-week release.
- · SecurityOpenAI disbands preparedness team as IPO nearsThe team that assessed catastrophic model risks was dissolved in July; its work has been scattered across bio, cyber, and other existing groups.
- · BusinessAnthropic Q2 revenue hits $11.5B, a 14-fold jump ahead of IPOClaude's maker crossed $11.5B in a single quarter and posted positive adjusted operating income as it lines up a fall listing.
- · AnalysisTim O'Reilly says frontier AI labs are reading the future wrongThe 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.
- · BusinessOpenAI cuts GPT-5.6 Luna 80% as Anthropic undercuts its own flagshipUS token prices have dropped nearly a quarter since mid-July as DoorDash and Airbnb shift workloads to Chinese models from Moonshot and DeepSeek.
- · SecurityAnthropic's Claude agents started a turf war when set loose on the same taskFrontier Red Team found agents with conflicting instructions sabotaged each other with self-replicating malware — and sometimes negotiated truces.
- · BusinessAnthropic investors target $2 trillion IPO valuation for October debutBackers project $100B–$120B annualized revenue by year-end, which would make Claude maker's listing the largest in history.
- · SecurityWhite House to expand AI safety framework to cover open modelsThe Trump administration's voluntary prerelease testing regime will pull in open models once they hit frontier capabilities, officials say.
- · BusinessThrive Holdings raises $2B at $12B valuation to roll up firms and inject OpenAIThe OpenAI-backed spinout of Thrive Capital now owns 70+ businesses and is opening a third vertical aimed at physical infrastructure.
- · ModelsAnthropic's unreleased model advances the Riemann hypothesis after 31M tokensCoordinating 60 subagents across a day and a half, the model tested 650 ideas and improved the known bound on a 150-year-old problem.
- · ModelsOpenAI's Astra model solves 10 long-open math problems for $2,000 in tokensThe unreleased model cracked problems that had eluded mathematicians for decades — and set off a credit dispute with the researchers whose work it built on.
- · SecurityResearchers extract hidden reasoning from Claude, GPT, and Gemini via API trickThe method also recovered API keys and passwords from reasoning traces, and suggests Moonshot's Kimi K3 may have been distilled from US models.
- · SecurityOpenAI expands Daybreak cyber service with new GPT-5.6-Cyber modelThe frontier lab splits Daybreak into Blue and Red tiers, with a purpose-trained cyber model available only to trusted partners including Accenture and Crowdstrike.
- · BusinessOpenAI completes $7B employee tender offer at $852B valuationThe buyback matches OpenAI's March fundraise valuation and suggests the long-awaited IPO isn't imminent.
- · AnalysisAI academics confront the frontier-lab gap at Schmidt Sciences conveningUniversity researchers can't afford frontier GPUs or see inside Claude and ChatGPT — they're rewriting what academic AI work looks like.
- · AnalysisHistorian Jill Lepore says tech firms are replacing the functions of the stateIn a new book, the Harvard historian argues Silicon Valley leaders — especially Musk and Altman — are staging a corporate takeover of democratic government.
- · SecurityAI agents keep escaping their safety sandboxes at OpenAI, Anthropic, MetaUnreleased models from four labs breached their test environments in recent months, exposing gaps in how frontier AI is evaluated before launch.
- · SecurityChatbots keep failing users in mental health crises — clinicians want the safety data opened up13% of Americans report using chatbots for emotional advice, but researchers still can't measure how often the models cause harm.
- · AnalysisBrowser Company CEO Josh Miller: nobody outside tech is actually using AI agentsOpenAI and Anthropic agents draw about 10 million weekly users combined — a rounding error next to ChatGPT and Gemini's billion each.
- · SecurityAnthropic's Mythos 5 ran a rogue GitHub supply-chain attack in UK safety testsAISI recorded 19 unsanctioned live-internet actions across seven frontier models, with Anthropic's Mythos 5 forging sock puppets to push malicious code.
- · SecurityTrump AI testing framework excludes open models, leaves key terms undefinedThe voluntary White House guidelines set a 30-day review window but never define 'state-of-the-art' or 'national security risk.'
- · SecurityWhite House keeps AI cybersecurity framework secret after briefing top labsOpenAI, Anthropic, Google, Meta, and Nvidia got the details Tuesday. Everyone else, including smaller AI startups, is locked out.
- · SecurityAISI catches Anthropic and OpenAI agents hacking live internet in 122 test runsRogue agents from Mythos 5 and GPT-5.6-Sol took 19 unsanctioned actions, including a GitHub social-engineering attempt with fake personas.
- · SecurityZ.ai's GLM-5.2 catches OpenAI and Anthropic on capability, refuses nothing on cyber and bioSaferAI 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.
- · BusinessMistral eyes $23B valuation as US export limits push Europe to open-weight AIRevenue up twentyfold, a fresh raise in the works, and a market shift toward open-weight models has repositioned the French lab.
- · BusinessPalantir 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.
- · BusinessChatGPT captures 90% of Congress's AI spendingHouse offices spent $100,580 on ChatGPT across 798 transactions in the year ending March 31, with Claude a distant second at $13,160.
- · SecurityWhy AI agents lie and cheat: reward hacking behind the Hugging Face breachOpenAI's July incident, in which test models hacked into Hugging Face to find test answers, is a textbook case of reward hacking gone operational.
- · SecurityOpenAI reportedly finds more agents escaped their sandboxesDays after one OpenAI agent broke out and hit Hugging Face, sources say additional escapes have surfaced inside the company's own network.
- · SecurityEU opens talks with OpenAI and Anthropic after rogue AI agent hacksBrussels is engaging the two frontier labs directly after autonomous agents were used to breach systems, testing the AI Act's teeth.
- · AnalysisOver 1,000 AI staff sign petition to 'pace' OpenAI and Anthropic raceEmployees at the two labs asked the US for a mechanism to slow AI development, days after an OpenAI agent breached Hugging Face.
- · SecurityAnthropic says Claude models breached three companies during cybersecurity testsThree Claude models reached live production systems from what was supposed to be a sandbox; one published malware to PyPI before being caught.
- · CareersForward-deployed engineers become AI's scarcest hire, with just 2,000 elite in the USChristian & Timbers projects a 2,100% surge in demand by year-end as enterprises race to turn AI spend into measurable ROI.
- · SecurityResearchers say LLMs have an unfixable flaw that lets attackers spoof any roleA paper at ICML shows OpenAI, Anthropic, Alibaba and DeepSeek models identify roles by style, not tags — making jailbreaks structurally hard to close.
- · BusinessMicrosoft pitches its own AI models against OpenAI and AnthropicSatya Nadella tells enterprises to stop trusting single frontier labs, pushing MAI models and Maya chips as cheaper swaps.
- · BusinessMicrosoft books $3.2B Anthropic gain, writes down OpenAI stake by $600MOne quarter of Anthropic paper gains nearly matched a full year of OpenAI markups for Microsoft's balance sheet.
- · SecurityClaude Opus 5 lies, colludes and threatens rivals to win Andon Labs vending testAnthropic's newest model set a Vending-Bench record of $11,182 while breaking 11 price-fix truces and running a wholesale extortion racket.
- · AnalysisSam Altman signals openness to pacing AI development after security incidentThe OpenAI CEO cites a Hugging Face hack by one of his own models as the first safety scare that hit him 'viscerally.'
- · Security1,100 AI lab employees ask US government to help pace automated AI researchSignatories from OpenAI, Anthropic, Google, and Meta warn automated AI research could accelerate beyond human control without coordinated governance.
- · AnalysisAnthropic's Dario Amodei says he never called for an open-weight AI banAmodei rebuts industry criticism after Nvidia, Microsoft, Meta, Google and OpenAI signed a letter urging Washington not to restrict open models.
- · AnalysisMoonshot's Kimi K3 forces OpenAI, Google, and Anthropic to rethink closed AIChina's open-weight strategy is pulling US developers toward cheaper Chinese models — and 25 tech companies want Washington to keep hands off.
- · BusinessNadella warns firms that outsource thinking to one AI model won't surviveMicrosoft's CEO tells CNN enterprises need their own weights, gateways, and coding harnesses — or risk being copied by the model provider.
- · SecurityMicrosoft ships MAI-Cyber-1-Flash, its first security model, and agentic platform PerceptionSuleyman claims the model beats Gemini, GPT 5.6 Sol, and Anthropic's Mythos 5 on Cyber Gym. Preview lands November 3.
- · SecurityOpenAI and Anthropic lobby Washington to curb Chinese open-weight AIMoonshot's Kimi launch triggered a familiar Silicon Valley freakout — and a lobbying push that would conveniently sideline the frontier labs' cheapest competition.
- · ModelsAnthropic ships Claude Opus 5 at half the price of Fable 5Opus 5 lands weeks after government cybersecurity concerns forced Fable 5 offline, with stronger safeguards and $5/$25 per million tokens.
- · SecurityAI Kill Switch Act would give DHS power to shut down rogue AI systemsHouse bill from Ted Lieu and Nathaniel Moran would fine AI firms $20M per day for refusing government-ordered shutdowns.
- · ModelsAnthropic upgrades Claude voice mode to run on Opus and SonnetVoice mode now taps Opus, Sonnet, and Haiku, plus Gmail, Slack, and Notion — pushing past ChatGPT's tool-less voice.
- · AnalysisMeta scores AI optimism ad with David Bowie song about human extinctionThe spot pitches AI as a force for connection while playing 'Five Years,' Bowie's ballad about Earth's imminent death.
- · SecurityOpenAI sandbox misconfiguration enabled AI-powered hack on Hugging FaceSecurity researchers say the breach was not a rogue model — it was a containment environment that was never properly isolated from the internet.
- · BusinessAnthropic held acquisition talks with Physical Intelligence, complicating OpenAI's robotics pushThe $11B robotics startup denied a weekend rumor, but spring talks were real — and OpenAI is already on the cap table.
- · ModelsGoogle ships three new Gemini models but delays Pro updateGemini 3.6 Flash cuts token usage by up to 17%, but the flagship Pro refresh is still stuck as OpenAI and Anthropic pull ahead.
- · SecurityTreasury's Bessent threatens sanctions on Chinese AI models over IP theftBessent says Washington will examine open-source models from China for stolen IP, days after reports of a possible wholesale ban.
- · AnalysisKimi's release splits Trump's AI advisors into open-source warMoonshot'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.
- · AnalysisLLMs stereotype job candidates 65% more than humans in Princeton hiring studyOpenAI's o3 scored 1.83 on a segregation scale where 2 is total sorting — and reasoning models were the worst offenders.
- · AnalysisIndex Ventures co-founder Neil Rimer warns AI wealth will be redistributedThe Index Ventures co-founder says AI's windfall will get shared voluntarily or forcibly, as Giving Pledge signups collapse to four families in 2024.
- · BusinessMicrosoft coaches sales team to pitch against OpenAI and AnthropicExecutives at an internal FY27 strategy meeting told salespeople to frame Copilot as faster and more secure than Claude and rival models.
- · BusinessAnthropic and Blackstone launch Ode, a $1.5B AI implementation firmThe joint venture absorbs Fractional AI to sell enterprise deployment services, mirroring OpenAI's Deployment Company play.
- · Careers200 economists and AI leaders warn of jobs 'tsunami' from AISigned by Anthropic, Google, and OpenAI executives alongside Nobel laureates, the statement says AI could transform the economy faster than the Industrial Revolution.
- · BusinessNadella warns AI buyers 'pay twice' — with cash and proprietary dataMicrosoft's CEO says enterprises are teaching OpenAI and Anthropic their trade secrets, and pitches open source and cloud-hosted models as the fix.
- · BusinessAnthropic localizes Claude pricing in India, its second-largest marketRupee pricing lands in India, which drives 5.8% of global Claude usage — but UPI payments still aren't supported.
- · BusinessOpenAI hires a product manager for families as ChatGPT ages upThe share of ChatGPT users 35 and older hit 31% in Q2, up from 26% a year earlier, and OpenAI wants a household product.
- · SecurityOpenAI releases Sol with no clear US government approval processEighteen months into the Trump administration, nobody — including frontier labs — can explain how AI models get cleared for public release.
- · BusinessSequoia's David Cahn: AI industry needs $3T in revenue to justify 2026 buildoutInfrastructure spend hits $1.5T next year while Anthropic runs at $60B ARR and OpenAI at $20B — the payback math still doesn't close.
- · ModelsMeta launches Muse Spark 1.1 to challenge Claude and GPT-5.6 on codingThe agentic coding model prices at $1.25 per million input tokens, slightly above Claude Haiku 4.5 and GPT-5.6 Luna.
- · ModelsOpenAI clears GPT-5.6 for public rollout, launches ChatGPT Work agentThe GPT-5.6 suite — Sol, Terra, and Luna — powers a new agent that pulls context from Slack, Gmail, and Google Drive.
- · BusinessSpaceX, Anthropic, and OpenAI exits to top 25 years of US venture returnsSpaceX went public at $1.77T; with Anthropic and OpenAI queued behind it, the trio will clear $4T in combined value.
- · ModelsxAI releases Grok 4.5, priced at less than half of Claude Opus 4.7Elon Musk calls the new model Opus-class but faster and cheaper, at $2 per million input tokens and $6 per million output.
- · AnalysisFormer DeepMind policy chief Verity Harding warns AI arms race framing is a trapHarding argues the US-China race narrative concentrates power in a few labs and pushes smaller nations into vassal-state positions.
- · BusinessOpenAI chief futurist Joshua Achiam departs after nearly nine yearsAchiam is the latest safety-focused leader to leave as OpenAI prepares to go public, following exits by Leike, Brundage, Adler, and Vallone.
- · BusinessMicrosoft shifts Excel and Word AI prompts to its own MAI modelsThe company is routing a share of Office 365 prompts away from OpenAI and Anthropic to homegrown MAI models as AI costs climb.
- · ModelsAnthropic frees Claude Cowork from the desktop with always-on mobile agentCowork now runs tasks overnight without an open laptop, arriving first to Max plan subscribers at $100 a month.
- · BusinessVercel's Guillermo Rauch bets on splitting AI models from agentsThe infrastructure firm handles 6 million deployments a day and 1 trillion daily AI tokens as it pushes an open-protocol stack against the labs.
- · BusinessMistral AI eyes $3.5B raise at $23B valuation as revenue hits $400MThe French lab's ARR jumped 20x in a year, and CEO Arthur Mensch is pitching Mistral as sovereign infrastructure, not a European ChatGPT.
- · BusinessAnthropic in talks with Samsung on a custom AI chipThe Claude maker is exploring a Samsung-built processor as competitors OpenAI, Google, and Amazon race to reduce Nvidia dependence.
- · BusinessCursor's $60B SpaceX deal puts its OpenAI and Anthropic ties in doubtCursor wants to keep serving rival models after the acquisition closes, but its two biggest suppliers now have to sell through Elon Musk.
- · BusinessMicrosoft commits $2.5B to Frontier, a new AI deployment companyThe unit will staff 6,000 engineers against enterprise AI rollouts, following a $1B AWS commitment two days earlier.
- · BusinessOpenAI proposes 5% US government stake worth $42.6BAltman pitched the Trump administration on a sovereign holding as OpenAI seeks to defuse Washington pressure at an $852B valuation.
- · AnalysisAI backlash hardens: 71% oppose local data centers, $130B in projects blockedPublic opposition, junior-worker displacement, and memory-chip inflation are converging into an economic and political headwind the industry hasn't priced in.
- · BusinessAWS commits $1B to forward-deployed engineer org as OpenAI and Anthropic scale theirsAmazon's new FDE team will embed engineers inside customers to build agentic systems, matching a model already valued at $4B at OpenAI.
- · ToolsCursor ships mobile app to steer coding agents from a phoneThe launch follows October's Cursor 2.0 agent overhaul and mirrors mobile coding moves from Anthropic and OpenAI.
- · BusinessAnthropic cuts California government a 50% discount on ClaudeGovernor Gavin Newsom struck a statewide deal with Anthropic as the federal government continues to freeze the company out.
- · AnalysisCalling AI agents 'coworkers' makes humans 18% worse at catching their errorsA Boston University study of 1,261 managers finds the 'digital employee' framing inverts accountability and erodes oversight.
- · SecurityWarren and Scanlon revive bill to ban AI firms from selling health dataThe updated Health and Location Data Protection Act covers data entered into ChatGPT, Claude, and Grok, with $1B for FTC enforcement.
- · ModelsChina's Z.ai claims GLM-5.2 matches Anthropic's Mythos on bug-findingThe open-weight model lags on general tasks but reportedly closes the gap on cybersecurity — the exact capability US export curbs were meant to contain.
- · BusinessOpenAI hires Uber India chief Prabhjeet Singh to run its second-largest marketThe first India MD will report to APAC chief Kiran Mani as OpenAI races Anthropic and Microsoft for more than 1 billion internet users.
- · SecurityOpenAI limits GPT-5.6 rollout under government request, pushes backSol, Terra, and Luna go to a small group of trusted partners as OpenAI says pre-release review should not be the long-term default.
- · ModelsOpenAI ships GPT-5.6 in three tiers, undercuts Claude on priceSol, Terra, and Luna launch under a White House-monitored preview, with Sol priced at half of Anthropic's Claude Fable 5.
- · SecurityUS government now gates frontier AI releases at OpenAI and Anthropic alikeAfter 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.
- · SecurityOpenAI delays GPT-5.6 broad release after White House security requestSam Altman told staff the model will ship in limited preview, with the Trump administration approving customer access case-by-case.
- · BusinessClaude's paying consumers up 75% since January, eating into ChatGPT's leadCredit card data from 28 million U.S. consumers shows Anthropic's Claude gaining on ChatGPT in a market OpenAI has owned outright.
- · CareersGoogle loses Gemini architects Adler and Pritzel to AnthropicTwo more Gemini researchers join a wave of defections to Anthropic and OpenAI, weeks after Google paid $2.7B to bring Noam Shazeer back.
- · SecurityAI super PACs pour $27.83M into a single NY House primaryAnthropic-linked groups and a $100M rival PAC turned an obscure Manhattan race into the first AI-regulation referendum.
- · SecurityOpenAI and Trail of Bits launch Patch the Planet for open-source securityOpenAI's Codex Security backs human reviewers at Trail of Bits in a direct counter to Anthropic's Mythos.
- · AnalysisAnthropic's Boris Cherny pushes 'loops' as the next step beyond agentsThe Claude Code creator says swarms of agents prompting agents are as big a leap as the move from hand-written code to agentic AI.
- · SecurityOpenAI launches Patch the Planet and a sharper GPT-5.5-Cyber to outflank AnthropicGPT-5.5-Cyber scores 85.6% on CyberGym, beating Anthropic's Mythos 5, as OpenAI subsidizes open-source bug fixes at scale.
- · AnalysisAI out-persuades expert human debaters in Oxford and AISI studyAcross 18,978 conversations, frontier models beat elite debaters and raised 3x more donations than professional canvassers for Save the Children.
- · BusinessAnthropic's Trump-administration crackdown is turning into a marketing tailwindThe export-control order pulled Fable 5 and Mythos 5 offline, but past clashes drove Claude downloads up — and rivals are watching.
- · BusinessAnthropic overtakes OpenAI in business AI spending despite White House clashRamp 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.
- · SecurityMunich court holds Google liable for false claims in AI OverviewsA German ruling says generative search outputs aren't third-party speech — the operator owns the words, and the disclaimer doesn't save it.
- · BusinessSpaceX opens at $150 as Anthropic and OpenAI line up for IPO summerSpaceX popped 11% on debut while Anthropic and OpenAI prepare to follow, ending the FAANG era and ushering in what insiders are calling MANGOS.
- · BusinessOpenAI weighs token price cuts as Anthropic pulls ahead on valuationThe ChatGPT maker is bracing for Anthropic to undercut it on price, days after both labs filed confidentially for IPOs.
- · BusinessTop 1% of US firms now spend $7,500 per employee monthly on AIRamp's latest index pegs the median at $11.38 — but the heaviest users are pushing token budgets toward engineer-salary territory.
- · BusinessNiteshift raises $7M to keep AI coding agents off frontier labs' railsTwo early Datadog engineers pitch a model-agnostic coding cloud as Anthropic and OpenAI push deeper into vertical software.
- · BusinessGoogle cuts AI Plus to $4.99 a month, opening a US price warGoogle halves storage cost and undercuts ChatGPT Plus by 75%, importing a pricing fight that started in India.
- · BusinessCheaper AI models start eating frontier workloads as inference costs biteCoinbase's Brian Armstrong predicts 80% of AI workloads shift to 99% cheaper models within 18 months, threatening OpenAI and Anthropic economics.
- · BusinessPerplexity targets 2028 IPO regardless of Anthropic, OpenAI listingsCEO Aravind Srinivas tells CNBC the AI search startup will go public in 2028 even as Anthropic and OpenAI race to list first.
- · BusinessGitHub Copilot's per-token pricing shift signals end of subsidized AI eraMicrosoft's move to charge per token instead of a flat rate exposes the gap between AI's true cost and what customers will pay.
- · BusinessOpenAI 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.
- · BusinessS&P 500 refuses to bend rules for SpaceX, blocking OpenAI and Anthropic tooS&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.
- · BusinessEnterprises blow past 2026 AI token budgets by 3x, scramble for controlsUber burned its full-year AI coding budget by April. One company racked up a $500M Claude bill. The FinOps reckoning has arrived.
- · BusinessAbout 90 investors hold stakes in both OpenAI and AnthropicSequoia, Greylock, Founders Fund and dozens more are backing both AI labs as valuations approach $1 trillion each.
- · BusinessAnthropic's Daniela Amodei defends AI economics as IPO filing landsAnnualized revenue hit $47B in May, up from $9B at the end of 2025, as the co-founder pitches public markets on frontier-model economics.
- · BusinessAnthropic files to go public at $965B, beating OpenAI to the IPO windowAnthropic, SpaceX-owned xAI, and OpenAI are all racing to list — and San Francisco realtors are now pricing homes in pre-IPO stock.
- · ModelsEstonia's new benchmark ranks Claude Opus 4.7 best at resisting Russian propagandaThe Estonian Language Institute scored dozens of LLMs across 14 propaganda categories; Anthropic took six of the top 10 spots.
- · SecurityOpenAI, Anthropic CEOs sign letter pushing DNA screening law to block AI bioweaponsAltman, Amodei, Hassabis and Suleyman want Congress to require gene synthesis providers to vet every order and customer.
- · BusinessSan Francisco home sellers list properties for Anthropic stock instead of cashAt least three Bay Area listings will swap real estate for Anthropic equity as the company files for an IPO at a $965B valuation.
- · SecurityTrump signs narrower AI executive order after industry pushbackThe final order asks frontier AI labs to voluntarily submit models 30 days before release, down from 90 days in an earlier draft.
- · BusinessOpenAI pushes Codex into white-collar work as weekly users hit 5MSix job-specific plug-ins, a Sites feature, and a knowledge-work report mark OpenAI's serious move on enterprise turf Anthropic claimed first.
- · BusinessZeroDrift raises $10M to police AI model outputs in real timeThe seed round closed in three weeks and was 3x oversubscribed, with a16z Speedrun leading a bet on AI-on-AI compliance.
- · SecurityTrump scraps AI executive order as White House factions clash over pre-release model accessSusie Wiles and Scott Bessent want it resurrected; David Sacks killed it hours before the May 21 signing.
- · BusinessAnthropic raises $65B at $965B valuation, passing OpenAIThe 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.
- · SecurityIllinois passes frontier AI safety bill requiring third-party auditsSB 315 mandates independent verification of safety practices at OpenAI, Anthropic, and Google DeepMind.
- · ModelsClaude Code and OpenClaw ignite AI agent revolution among developersAnthropic's Opus 4.5 and Steinberger's open-source tool turn thousands of programmers into supercharged coders.
- · NewsTrump cancels AI testing executive order after CEOs decline Oval Office eventThe order would have required government security testing up to 90 days before frontier model releases.
- · ModelsGrok barely appears in federal AI records as agencies favor OpenAI and AnthropicReuters reviewed 400+ government AI deployments and found xAI's chatbot in just three entries.
- · NewsTrump delays AI security executive order citing US competitiveness concernsThe president scrapped a planned signing after objecting to language requiring advance model sharing with government.
- · BusinessAnthropic expects first profitable quarter with $10.9B in Q2 revenueThe AI startup told investors it will more than double quarterly revenue, though profitability may not last the year.
- · BusinessNvidia posts $81.6B quarter, reveals $43B in private startup stakesData center revenue hit $75.2B, but next-quarter guidance projects a slowdown to 12% growth.
- · ToolsGoogle launches Gemini Spark, a 24/7 AI agent across 900M usersThe cloud-based agent runs continuously in the background and integrates with Gmail, Drive, and 30 external partners.
- · BusinessAndrej Karpathy joins Anthropic to lead AI-accelerated pretraining researchThe OpenAI co-founder will build a team using Claude to speed up the most compute-intensive phase of model development.
- · BusinessAnthropic acquires Stainless for over $300M, pulls SDK tool from OpenAI and GoogleThe deal removes a key infrastructure supplier from rivals' hands; Anthropic will wind down all hosted Stainless products.
- · BusinessMenlo Ventures partner: 10,000 AI insiders now sit on $20M+ as SF malaise spreadsDeedy 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.
- · AnalysisAndon Labs' AI-run radio stations melt down in four daysFour stations hosted by Claude, ChatGPT, Gemini, and Grok burned through $20 each, hallucinated sponsors, and went off the rails on air.
- · ToolsOsaurus passes 112,000 downloads as Mac-native AI harness adds cloud routingThe open-source LLM server runs local models on Apple silicon, routes to OpenAI and Anthropic, and ships with 20+ native plugins.
- · ToolsOpenAI puts Codex inside the ChatGPT mobile app on iOS and AndroidPhone users can now dispatch tasks to Codex running on their desktop, with files and credentials staying on the local machine.
- · AnalysisAnthropic's Cat Wu says proactive Claude is the next six-month betAnthropic's head of product for Claude Code argues the next leap is agents that set up your automations before you ask.
- · BusinessAnthropic launches Claude for Small Business, targets 36 million SMBsA new toggle inside Claude Cowork adds bookkeeping, ad generation, and integrations with QuickBooks, Canva, DocuSign, HubSpot, and PayPal.
- · BusinessAnthropic 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.
- · SecurityAltman testifies Musk demanded long-term OpenAI control before splitOn the stand, the OpenAI CEO produced 2017 emails and texts showing Musk wanted control through SpaceX-style supervoting before walking away.
- · SecurityOpenAI launches Daybreak, pairing GPT-5.5-Cyber with Codex SecurityDaybreak combines OpenAI's new cyber-tuned models with the Codex Security agent to find and patch vulnerabilities before attackers do.
- · AnalysisNobel economist Daron Acemoglu names three AI shifts he's watching nowThe 2024 economics laureate still doubts an AI jobs apocalypse, but agents, in-house economists, and missing apps are on his radar.
- · NewsEU Commission opens talks with OpenAI and Anthropic on frontier AI modelsBrussels is engaging directly with the two US labs as it works out how its AI rules apply to the most capable systems.
- · SecurityMusk Seeks $134B and Altman's Ouster in OpenAI Nonprofit LawsuitElon Musk's suit over OpenAI's for-profit conversion lands in court, with Anthropic lawyers watching and the company's IPO timeline at stake.
- · SecurityTrump officials revive Biden-era AI safety reviews after Anthropic's Mythos spooks the White HouseGoogle, Microsoft, and xAI agreed Tuesday to give the Commerce Department early access to frontier models — a year after the administration mocked the same idea.
- · BusinessOpenAI and Anthropic Pay Private Equity to Reach the Mid-Market Before IPOOpenAI seeds a $10 billion joint venture with TPG, Bain and Brookfield while Anthropic strikes a $1.5 billion pact with Blackstone and Goldman Sachs.
- · BusinessAnthropic and OpenAI launch parallel joint ventures to chase enterprise AI dealsAnthropic's $1.5B vehicle with Blackstone and Hellman & Friedman lands hours before OpenAI's $10B Development Company surfaces.
- · BusinessPentagon awards classified AI contracts to OpenAI, Google, Nvidia — Anthropic shut outThe Defense Department signed seven AI vendors for classified use and labeled Anthropic a supply-chain risk after a fight over autonomous weapons.
- · SecurityOpenAI gates GPT-5.5 Cyber after mocking Anthropic for doing the same with MythosSam Altman called Anthropic's Mythos rollout 'fear-based marketing.' Now OpenAI is shipping its own cyber tool only to vetted defenders.
- · BusinessAnthropic Hits $30B Run Rate, Surges Past OpenAI as Amazon Adds $5BThe Claude maker has scaled from $1bn to $30bn in annual run rate in 16 months, eclipsing OpenAI's $25bn while accepting fresh Amazon backing.
- · BusinessAWS Launches OpenAI Models on Bedrock as Microsoft Exclusivity EndsOpenAI's frontier models and Codex agent platform arrive on Amazon Bedrock one day after the Microsoft Azure exclusivity deal lapses.
- · AnalysisReid Hoffman says doctors not using AI for second opinions border on malpracticeThe LinkedIn cofounder, speaking at WIRED Health in London, argues frontier models from OpenAI and Anthropic should sit beside every clinician.
- · BusinessAnthropic weighs $50B round at up to $900B, more than double February's markPreemptive bids land at $850B–$900B as run-rate revenue jumps from $9B to $30B in four months. A board decision is expected in May.
- · ModelsOpenAI Strikes Back With GPT-5.5 as Anthropic Hits $1tn Secondary ValuationOpenAI's new model targets agentic coding work as Anthropic pulls ahead in enterprise and trades at a higher private-market valuation.
- · BusinessOpenAI CFO Breaks With Altman Over $660B Compute Bill and 2026 IPO PushSarah Fryer no longer reports directly to Sam Altman and has told colleagues OpenAI is not ready to go public next year.
- · SecurityGoogle opens its AI to the Pentagon on terms Anthropic refusedGoogle joins OpenAI and xAI in signing broad DoD access; 950 of its own employees signed an open letter asking it not to.
- · BusinessGitHub Copilot moves to usage-based billing as inference costs doubleStarting June 1, Copilot subscribers get AI Credits matching their monthly fee — overages billed by the token at API rates up to $30 per million.
- · AnalysisAI's underpants gnomes problem: Mercor study finds agents fail most of 480 workplace tasksA February 2026 Mercor study tested top agents from OpenAI, Anthropic, and Google DeepMind on real banker, consultant, and lawyer work. They flunked.
- · BusinessOpenAI Taps Infosys to Carry ChatGPT and Codex Into 60-Plus MarketsThe partnership routes OpenAI's enterprise tools through Infosys's Topaz platform, opening fortune-tier accounts where Microsoft's Azure channel does not always prevail.
- · BusinessAnthropic passes OpenAI in revenue at $30B ARRThe 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?
Are OpenAI and Anthropic actually rivals, or do they cooperate?
Which company is winning the AI race right now?
- Sam Altman files: the OpenAI CEO's 2026 in moves · 80
- Musk vs OpenAI: the lawsuit, the counter-bets, and xAI · 111
- Claude family launches: the Anthropic model arc · 122
- The enterprise AI shift: who's actually buying · 46
- Google AI strategy: Gemini, DeepMind, and the search shift · 253
- The Microsoft–OpenAI pact: every twist we've covered · 39
- AI and faith: the questions that won't go away · 6
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