Anthropic Python SDK v0.120.0

v0.120.0
Added 3
  • Add claude-opus-5 model
  • Add tool addition/removal blocks and tool_change events
  • Expand client-side fallback credit token types and add server-side fallbacks default option
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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