Claude Code This Week: Claude Sonnet 5.5 Becomes the Default Sonnet Model, Codex CLI 0.160.0 and Gemini CLI 0.62.0 Ship in the Same Week

Claude Code 2.1.284 makes Claude Sonnet 5.5 (claude-sonnet-5-5) the default Sonnet model for the Anthropic API, with a 1M context window at $2/$10 per MTok—priced the same as Sonnet 5.