Anthropic is releasing two new Claude models, cutting prices 20%

Anthropic has unveiled the latest iteration of Claude, its advanced AI model, with the release of Fable 5.2. This is the second major update since Anthropic launched the Fable model class in June. The new Fable 5.2 model, alongside Mythos 5.2, promises enhanced performance in various areas such as coding, reasoning, and vision.

According to Anthropic, testers have reported that Fable 5.2 and Mythos 5.2 are more communicative and generate outputs up to 30% faster than their predecessors. Additionally, these models are available at a more affordable cost, priced at $8 per million input tokens and $40 per million output tokens.

Fable and Mythos models are recommended for the most complex technical tasks. For typical coding and knowledge work, users are encouraged to begin with Claude Opus 5.5, Anthropic's most powerful daily-driver model, and then transition to Fable or Mythos models as needed, depending on the task's scope and complexity.

The update to Fable 5.2 includes a significant contribution from Claude itself—over 90% of the changes were written by Claude, guided by human oversight. This model has proven effective in resolving difficult bugs quickly, optimizing performance for various services, and completing high-value software projects that would have been impractical with previous versions.

A notable example of Fable 5.2's capabilities is its role in migrating a critical production service from Python to Rust. This transition resulted in a more efficient, reliable service that starts significantly faster, about 26 times quicker than before. Furthermore, Fable 5.2 exhibits strong engineering judgment, capable of producing high-quality results even from ambiguous requests.

As part of the launch, Anthropic is enhancing the availability of Fable usage for subscribers on eligible paid plans. These users will receive one to three Fable resets based on their subscription length, and Fable will be included for up to 50% of the weekly usage limits for Pro plans and standard seats on the Team plan.