Claude Fable 5 and Claude Mythos 5
Our next generation of intelligence for the hardest knowledge work and coding problems.

Fetched June 11, 2026
Our next generation of intelligence for the hardest knowledge work and coding problems.

Fetched June 11, 2026
We launched Claude Fable 5, a Mythos-class model that we've made safe for general use. For more information, see our blog post: Claude Fabl…
Anthropic · ClaudeClaude Fable 5 ( ) and Claude Mythos 5 ( ) launched with 1M token context window by default, 128k max output tokens, and always-on adaptive…
Anthropic · Claude Platform