Observed 29 October 2026
Two sentences on the page had their straight apostrophes swapped for curly ones; the wording, dates and model information are otherwise unchanged.
what changed matterssummary written by a model — check it against the diff below
A restriction or obligation was removed or reworded — 2 lines containing binding language went away. Loosenings are rarely announced.
+2 −2 · 2253424 → 11c2a73 · 11c2a734aafb · live page
anthropic/model-deprecations.txt29 Oct 2026
10 unchanged lines - Deprecated: The model is still functional but no longer recommended. Anthropic provides a recommended replacement and assigns a retirement date. - Retired: The model is no longer available for use. Requests to retired models fail. Deprecated models are likely to be less reliable than active models. Move workloads to active models to maintain the highest level of support and reliability. The dates on this page apply to Anthropic-operated platforms: the Claude API, Claude Platform on AWS , Claude Models on Google Cloud (Anthropic managed) , and Microsoft Foundry . Partner-operated platforms, Amazon Bedrock and Claude Models on Google Cloud (Google managed), set their own retirement schedules, so a model's lifecycle status and dates can differ. See the Amazon Bedrock , Amazon Bedrock (Opus 4.6 and earlier) , and Claude Models on Google Cloud (Google managed) model tables. The dates on this page apply to Anthropic-operated platforms: the Claude API, Claude Platform on AWS , Claude Models on Google Cloud (Anthropic managed) , and Microsoft Foundry . Partner-operated platforms, Amazon Bedrock and Claude Models on Google Cloud (Google managed), set their own retirement schedules, so a model’s lifecycle status and dates can differ. See the Amazon Bedrock , Amazon Bedrock (Opus 4.6 and earlier) , and Claude Models on Google Cloud (Google managed) model tables. Migrating to replacements Once a model is deprecated, migrate all usage to a suitable replacement before the retirement date. Requests to models past the retirement date will fail. To help measure the performance of replacement models on your tasks, consider thorough testing of your applications with the new models well before the retirement date. For specific instructions on migrating to the latest Claude models, see Migration guides . Notifications Anthropic notifies customers with active deployments for models with upcoming retirements, providing at least 60 days' notice before model retirement for publicly released models. Anthropic notifies customers with active deployments for models with upcoming retirements, providing at least 60 days’ notice before model retirement for publicly released models. Auditing model usage To help identify usage of deprecated models, you can access an audit of your API usage. Follow these steps: - Go to the Usage page in Claude Console. 107 unchanged lines
Underlined words mark what moved within a rewritten line. Nothing here is interpreted — this is the difference between two captures, and the conclusion is yours.