0.120.0 (2026-07-24) Full Changelog: v0.119.0...v0.120.0 Features api: add claude-opus-5 model ( bf4e31c ) api: add tool addition/removal blocks and tool_change events ( bf4e31c ) api: expand client-side fallback credit token types and add server-side fallbacks default option ( bf4e31c )
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