Anthropic · not yet on TeamoRouter
Claude Mythos 5.5 API
The next model in Anthropic's restricted-access Mythos line for cybersecurity and biology research. Not released; the current generation is limited to vetted organizations.
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Use these on TeamoRouter now
Same key, same base URL. Switch only the model ID.
Claude Opus 5.5
claude-opus-5-5
Anthropic's newest generally available Opus model, for hard coding work.
Model page →
Claude Fable 5.1
claude-fable-5-1
Anthropic's top generally available model line, for the hardest reasoning and long agent runs.
Model page →
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Official information
Not released yet
- Not released. Anthropic has announced no release date, model ID or price.
- November 1, 2026: TestingCatalog spotted a Claude Mythos 5.5 reference on Anthropic's Mythos page; the page itself still shows Mythos 5.1.
- The current generation, Claude Mythos 5.1, is available only to vetted cyberdefenders and life scientists through Anthropic's trusted access programs.
- Because the previous generation was not offered on the general API, TeamoRouter can't promise Mythos 5.5 will be available here when it ships.
Sources