Anthropic Go SDK v1.76.0 adds claude-sonnet-5-5 and between_tools thinking
Anthropic released anthropic-sdk-go v1.76.0, adding the claude-sonnet-5-5 model, a between_tools thinking type, workspace rate-limit include_inherited and source fields, typed Managed Agents event filters, and GA cache diagnostics on Message and MessageCreateParams. Fixes cover request-config cloning, mid-response connection retries, unnamed file uploads, and between_tools fallback behavior.
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