Claude Mythos 5
Claude Mythos 5 is an announced but not yet released language model from Anthropic, released June 9, 2026.
Today we’re launching Claude Fable 5: a Mythos-class1 model that we’ve made safe for general use. [...] For a small group of cyberdefenders and infrastructure providers, we’re also launching Claude Mythos 5.
Check it against your own PC →
Lab
Anthropic
Released
June 9, 2026
Weights
announced but not yet released
Parameters
–
Context
–
Price / M tokens
–
Epoch ECI
not yet rated
Benchmark results
Epoch AI has not published results for Claude Mythos 5 yet. New models are usually evaluated within days to weeks.
Links
More from Anthropic
Claude Fable 5.2 · Claude Haiku 5.5 · Claude Sonnet 5.5 · Claude Opus 5.5 · Claude Fable 5.1 · Claude Opus 5 · Claude Sonnet 5 · Claude Fable 5