claude-sonnet-4-5 — GA — shutdown 2026-10-19
For claude-sonnet-4-5, provider is Microsoft Azure / Foundry; lifecycle status is GA; shutdown / retirement date is 2026-10-19; platform / deployment scope is Azure / Microsoft Foundry, recorded from its source on 2026-08-28; source re-checked 2026-09-16.
- Provider
- Microsoft Azure / Foundry our reading
- Model ID / API name
- claude-sonnet-4-5 verified
- Human-readable model name
- claude-sonnet-4-5 verified
- Lifecycle status
- GA verified
- Shutdown / retirement date
- 2026-10-19 verified
- Platform / deployment scope
- Azure / Microsoft Foundry our reading
- Recommended replacement
- Claude Sonnet 5 per github.blog
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 | 2026-10-19 | — |
— raw.githubusercontent.com, retrieved 2026-08-28
Sources disagree
More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from — deciding between them is yours, not ours.
Provider
raw.githubusercontent.com says provider is Microsoft Azure / Foundry, as of 2026-08-28.
| claude-sonnet-4-5 | 1 | GA | 2026-10-19 | — |
github.blog says provider is GitHub Copilot, as of 2026-09-09.
Claude Sonnet 4.5 | 2026-09-01 | Claude Sonnet 5 |
https://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated/
Lifecycle status
raw.githubusercontent.com says lifecycle status is GA, as of 2026-08-28.
| claude-sonnet-4-5 | 1 | GA | 2026-10-19 | — |
github.blog says lifecycle status is Deprecated, as of 2026-09-09.
Claude Sonnet 4.5 | 2026-09-01 | Claude Sonnet 5 |
https://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated/
Shutdown / retirement date
raw.githubusercontent.com says shutdown / retirement date is 2026-10-19, as of 2026-08-28.
| claude-sonnet-4-5 | 1 | GA | 2026-10-19 | — |
github.blog says shutdown / retirement date is 2026-09-01, as of 2026-09-09.
Claude Sonnet 4.5 | 2026-09-01 | Claude Sonnet 5 |
https://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated/
Platform / deployment scope
raw.githubusercontent.com says platform / deployment scope is Azure / Microsoft Foundry, as of 2026-08-28.
| claude-sonnet-4-5 | 1 | GA | 2026-10-19 | — |
github.blog says platform / deployment scope is GitHub Copilot, as of 2026-09-09.
Claude Sonnet 4.5 | 2026-09-01 | Claude Sonnet 5 |
https://github.blog/changelog/2026-08-31-selected-github-copilot-models-deprecated/
Sources
- raw.githubusercontent.comhttps://raw.githubusercontent.com/MicrosoftDocs/azure-ai-docs/main/articles/foundry/openai/includes/concepts-model-retirement-schedule-content.md
- 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/