Anthropic resets Claude usage limits with Fable 5.1 launch

The reset of usage limits for Claude follows the release of Claude Fable 5.1, which Anthropic announced on the same day. This model builds on Claude Fable 5 by improving autonomous performance in scientific research and coding. The cost reductions are notable: cache-read prices fall by 75%, and API costs drop by about 25% for typical tasks and up to about 45% for complex coding. These changes could make Claude more accessible and affordable for businesses that rely on token-based APIs.

Anthropic also introduced Claude Mythos 5.1, a model with adjusted safety features, restricted to certified partners in cybersecurity and life sciences. This selective availability suggests a strategy to offer specialized capabilities while maintaining control over high-risk applications. The usage limit reset likely aims to smooth the transition for existing users as they adopt the new model, but the article does not specify whether the reset applies to all users or only those on certain plans.