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

April 20, 2026 · Anthropic

Claude Haiku 3 retired; requests now return an error

We’ve retired the Claude Haiku 3 model (claude-3-haiku-20240307). All requests to this model will now return an error. We recommend upgrading to Claude Haiku 4.5.

Read the Anthropic changelog