Anthropic launches Claude Sonnet 5.5: 30% faster and up to 30% cheaper
ClaudeDevs · x · 2026-09-29
Anthropic released Claude Sonnet 5.5, the second model in the Claude 5.5 family. It is smarter and more efficient than Sonnet 5, runs over 30% faster, and costs up to 30% less for most workloads—stretching Claude Code usage further. Anthropic positions it for well-scoped everyday tasks like bug fixes and rapid feature iteration. It's available now on the Claude Platform and Claude Code.
Related event: Anthropic Launches Claude Sonnet 5.5: 30% Faster, Up to 30% Cheaper(35 posts)→
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