Models
June 30, 2026

Anthropic introduces Claude Sonnet 5

Anthropic has launched Claude Sonnet 5, its newest general-purpose AI model, delivering stronger coding, reasoning, tool use, and agentic capabilities while becoming the default model for Claude users.

Anthropic has introduced Claude Sonnet 5, its latest general-purpose AI model designed for coding, reasoning, knowledge work, and autonomous agent workflows.

The company says Sonnet 5 delivers performance close to its flagship Opus 4.8 model while offering lower cost and faster execution.

The model includes improved tool use, stronger planning, better software engineering capabilities, and enhanced support for long-running agentic tasks. Claude Sonnet 5 is now the default model for Free, Pro, Max, Team, and Enterprise users, reflecting Anthropic's strategy to make advanced AI capabilities broadly available while reserving its highest-capability models for specialized use cases.

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