AI Model2026-05-17
Claude Sonnet
Also known as: Claude Sonnet / Sonnet / claude-sonnet-4
Anthropic's mid-range model series — delivering near-Opus quality at lower cost, and the most widely adopted option for enterprise automation and coding-assistant workflows.
Overview
Adoption in enterprise products is accelerating, including integration into Microsoft 365 Copilot. It is also the default model in Claude Code, praised for balancing cost and quality. See Microsoft 365 Copilot + Claude Sonnet.
Use cases
Delivers strong cost-performance across code generation, document authoring, customer-support automation, and RAG pipelines.
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