Anthropic SDK Python Adds New Claude Models and Fallback Support

Anthropic SDK Python version 0.108.0 introduces support for the new claude-mythos-5 and claude-fable-5 models. This release also adds client-side fallback middleware for API providers that do not support server-side fallbacks, enhancing resilience for users. These features are available now for developers using the Python SDK.

• →add support for claude-mythos-5 and claude-fable-5, with support for server-side fallbacks on refusal
• →adds client-side fallbacks middleware for API providers that do not support server-side fallbacks