claude-sonnet-4-5 — GA or Deprecated — shutdown 2026-11-30 or 2026-09-01 — sources disagree

For claude-sonnet-4-5, provider is Microsoft Azure / Foundry; lifecycle status is disputed: GA per learn.microsoft.com, Deprecated per github.blog; shutdown / retirement date is disputed: 2026-11-30 per learn.microsoft.com, 2026-09-01 per github.blog; recommended replacement is disputed: claude-sonnet-5-5 per learn.microsoft.com, Claude Sonnet 5 per github.blog; platform / deployment scope is Microsoft Foundry — version 1, hosted on Anthropic infrastructure, recorded from its source on 2026-10-05; source re-checked 2026-10-13.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

| claude-sonnet-4-5 | 1 | GA | 2026-11-30 | claude-sonnet-5-5 |

— learn.microsoft.com, retrieved 2026-10-05

Where each value comes from

This source states these in separate places, so each value is shown with the passage that states it.

— all from learn.microsoft.com, retrieved 2026-10-05

Sources

• learn.microsoft.comhttps://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule
• github.bloghttps://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated/

Last verified against source: 2026-10-13. Due for re-check by 2026-11-12. This page as Markdown · OKF bundle · full dataset as JSON.