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August 13, 2025 · Anthropic

Claude Sonnet 3.5 models deprecated, retiring October 28, 2025

  • We announced the deprecation of the Claude Sonnet 3.5 models (claude-3-5-sonnet-20240620 and claude-3-5-sonnet-20241022). These models will be retired on October 28, 2025. We recommend migrating to Claude Sonnet 4.5 (claude-sonnet-4-5-20250929) for improved performance and capabilities. Read more in Model deprecations.
  • The 1-hour cache duration for prompt caching no longer requires a beta header. Learn more in 1-hour cache duration.
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Cloud Changelog

Announcements from AWS, Google Cloud, Azure, Cloudflare and the main AI providers in one searchable changelog, with daily, weekly and monthly digests.

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