Anthropic launches Claude Fable 5.2 and Mythos 5.2
Fable is broadly available; Mythos requires verification, though both use the same underlying model.
Fable 5.2 applies cyber and biology safeguards and is available across Claude’s platforms, AWS, Google Cloud and Microsoft Azure. Vetted cybersecurity and life sciences organizations can apply for Mythos access. Anthropic says both generate output up to 30% faster than their 5.1 versions, with standard pricing of $8 per million input tokens and $40 per million output tokens. The company positions them for its hardest technical projects, while recommending Opus 5.5 for most daily coding and knowledge work.
TestingCatalog's note
Fable 5.2 applies cyber and biology safeguards and is available across Claude’s platforms, AWS, Google Cloud and Microsoft Azure. Vetted cybersecurity and life sciences organizations can apply for Mythos access. Anthropic says both generate output up to 30% faster than their 5.1 versions, with standard pricing of $8 per million input tokens and $40 per million output tokens. The company positions them for its hardest technical projects, while recommending Opus 5.5 for most daily coding and knowledge work.
TestingCatalog's note
score 8