Anthropic ships first Claude API version since 2023: 2026-10-21
ClaudeDevs · x · 2026-10-22
Anthropic officially released Claude API version 2026-10-21, the first official version bump since 2023-06-01. The team says it plans to ship versions more often so developers can absorb breaking changes before new models force them. The 2023-06-01 version is not deprecated.
Related event: Claude API Ships First New Version Since 2023 with Breaking Changes(3 posts)→
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