fable-5
2 articles tagged with fable-5
June 9, 2026
model releaseAnthropic
Anthropic releases Claude Fable 5, first public version of Mythos model for code generation
Anthropic has released Claude Fable 5, the first publicly available version of its Mythos model line. University of Pennsylvania AI researcher Ethan Mollick reports the model can execute multi-page specifications for up to 12 hours and generate complete video games from single prompts in Claude Code.
model releaseAnthropic
Anthropic releases Fable 5, bringing capabilities of restricted Mythos model to public with $10/$50 per 1M token pricing
Anthropic has released Fable 5, making capabilities from its previously restricted Mythos model available to the public. The company claims Fable 5 beats GPT-5.5, Gemini 3.1 Pro, and its own Opus 4.8 in internal testing, with pricing set at $10 per million input tokens and $50 per million output tokens after a free trial period ending June 22.