Tag · 9 stories
Every story tagged Claude Fable 5 on AI Chat Daily.
Opus 5 lands weeks after government cybersecurity concerns forced Fable 5 offline, with stronger safeguards and $5/$25 per million tokens.
Fable 5 goes global and Mythos 5 access returns for US users after three weeks of safety testing and tighter jailbreak defenses.
Jassy told Scott Bessent that Amazon researchers used Claude Fable 5 to extract cyberattack-relevant info, preceding the Fable 5 and Mythos 5 shutdown.
After backlash, Anthropic will make its frontier-LLM safeguards visible instead of silently degrading Claude's output for rival AI work.
Anthropic told The Verge Fable's guardrails are 'overly conservative' to block bioweapons queries, routing routine biology asks to Opus 4.8.
Anthropic's new safety classifiers retain prompts for 30 days, breaking Microsoft's zero-data-retention policy for employee tools.
Wharton's Ethan Mollick says the new Mythos-class model executed multi-page specs autonomously for up to a dozen hours.
The publicly available Mythos-class model routes sensitive prompts back to Opus 4.8 and costs 67-100% more than GPT-5.5.
The lab once said Mythos was too dangerous to ship. New safeguards route 5% of risky prompts back to Opus 4.8.
The tightly edited AI news email engineers, founders, and investors actually open. One email. Every weekday. Five minutes to finish.
The briefing read inside teams at
