claudekit / updates / claude-code-2-1-197
[ PATCH · ]

Claude Code 2.1.197

Claude Sonnet 5 is now the default model in Claude Code, with a native 1M-token context window and promotional pricing of $2/$10 per Mtok through August 31, 2026. Update to version 2.1.197 for access.

Claude CodeModel
Official announcement →

This article is a summary based on official documentation.

What changed

Claude Code 2.1.197 was released on June 30, 2026. Claude Sonnet 5 is now the default model in Claude Code, with a native 1M-token context window.

Key improvements

  • Claude Sonnet 5 is now the default model

    Using Sonnet 5 in Claude Code previously meant picking the model yourself. As of 2.1.197 it is the default, so agentic work — making plans, using browsers and terminals, and running autonomously — runs on Sonnet 5 without any manual selection.

  • Native 1M-token context window

    Large codebases and long sessions hit the context limit first. Sonnet 5 supports a native 1M-token context window, so more files and conversation history fit and are processed in a single context.

Notes

  • Pricing — promotional pricing of $2/$10 per Mtok (input/output) applies through August 31, 2026.
  • How to get it — update to version 2.1.197 for access to Sonnet 5.
  • More on the model — for details on Sonnet 5 itself, see the Introducing Claude Sonnet 5 update.