AnthropicLaunchAI ModelsSeptember 28, 2026

Anthropic releases Claude Sonnet 5.5, 30% faster and up to 30% cheaper

Read original source →anthropic.com

Sonnet 5.5 is the second model in the Claude 5.5 family after Opus 5.5, priced the same as Sonnet 5 at $2/$10 per million tokens with cache reads at $0.20. Anthropic says it runs 30%+ faster and costs up to 30% less for most work, with thinking on by default.

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