5 October 2026
Anthropic releases faster, cheaper Claude Sonnet 5.5
First reported
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- Anthropic, maker of the Claude chatbot, released Sonnet 5.5, a new version that costs 30% less per task by running faster and needing fewer tool calls.
- The model performs nearly as well as Opus 5.5, Anthropic's most powerful model, on two technical benchmarks measuring real-world task completion.
