← Claude Code changelog

Claude Code 2.1.170

This release introduces access to Fable 5, a groundbreaking Mythos-class model designed for general use, offering capabilities beyond any previously available model. It significantly enhances the assistance users can receive. Also included is an important fix addressing an issue where session transcripts were not reliably saving or appearing for resume, particularly for users working within the VS Code integrated terminal or specific shell environments. This improves session persistence and reliability.

Changed

  • Introducing Claude Fable 5: a Mythos-class model that we’ve made safe for general use. Fable’s capabilities exceed those of any model we’ve ever made generally available. Update to version 2.1.170 for access. https://www.anthropic.com/news/claude-fable-5-mythos-5

Fixed

  • Fixed sessions not saving transcripts (and not appearing in --resume) when launched from the VS Code integrated terminal or any shell that inherited Claude Code environment variables.