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 2.1.197 integrates Claude Sonnet 5 with a 1M-token context window as the default model and offers promotional pricing of $2/$10 per million tokens through end of August.