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Anthropic · model release

Claude Sonnet 5

Anthropic releases Sonnet 5, its most hands-off Sonnet yet, at a lower price than bigger models.

In detail

Anthropic released Claude Sonnet 5, which it described as its most agentic Sonnet model, with performance close to Opus 4.8 at lower prices, at $2 and $10 per million tokens (launched as introductory pricing, made standard on 2026-08-10).

Sources

  1. Introducing Claude Sonnet 5 · Anthropic · Primary source
  2. Claude Developer Platform release notes · Anthropic · Primary source

Last checked 11 November 2026.

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