Anthropic · Claude · Mythos · Decrypt
Claude Fable picked up’t answer basic biology questions
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Anthropic dropped its most powerful public model on Tuesday, and by Wednesday, a significant chunk of the AI community wished it hadn’t.
Key facts
- Theo from T3 Chat posted that he'd spent over $1,000 in tokens in one day on his $200 subscription plan
- Bleeping Computer also tested Fable and found it drained a $100 Max subscription's daily allowance in under nine minutes
- Fable 5 is free on Pro, Max, Team, and Enterprise plans until June 22
- Josh Ellithorpe, CTO at Pixelated Ink, said Fable 5 “burns tokens like no other model,” giving him only a few prompts before draining out his quota
Summary
Claude Fable 5 burns through subscription limits roughly twice as fast as Opus 4.8 the first publicly accessible version of the company's restricted Mythos-class technology—appears to be that it’s pretty good at coding, and produces amazing results in everyday sessions. The backlash was immediate and loud, cutting across researchers, developers, founders, and open-source advocates. Their Anthropic overlords deciding which prompts the peasants are allowed to use. pic.twitter.com/08YCSJcYSc. — Bojan Tunguz June 10, 2026. It's enjoyable, but also token-hungry.