In a nutshell: Claude Sonnet 5 with 1M token context becomes the default model in Claude Code 2.1.197 and costs $2 per 1M input tokens and $10 per 1M output tokens during the promotional phase.
Claude Code is now shipped with Claude Sonnet 5 as the standard model starting with version 2.1.197. The new model offers a native context window of 1 million tokens at promotional prices through the end of August.
With the release of Claude Code 2.1.197, Claude Sonnet 5 is now the default model of the IDE. The model features a native context window of 1 million tokens, enabling significantly larger code trees and contexts in a single session compared to previous versions.
Promotional pricing applies through August 31st: $2 per 1 million input tokens and $10 per 1 million output tokens. This makes Claude Sonnet 5 more cost-effective for developers during the launch phase.
The update is supported by the official announcement on Anthropic’s website. Engineers should upgrade to version 2.1.197 to gain access to Claude Sonnet 5 and its enhanced capabilities.
Source: github.com · Published June 30, 2026
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