Model and API retirements

58 within 30 days · 544 firm dates ahead

claude-mythos-5-1 retirement date and replacement

Microsoft Foundry · Model · retires Sep 1, 2027 (in 10 months)Unverified

Vendor page

Dates

Checked Oct 27, 2026 on Microsoft's page
RetiresSep 1, 2027 (in 10 months)
ReplacementNone named
Model makerAnthropic
What it isclaude-mythos-5-1 stops answering on Microsoft Foundry.
Sourcelearn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule

Changes

AnnouncedUnverified

Microsoft lists claude-mythos-5-1 on Microsoft Foundry to retire on Sep 1, 2027.

Oct 26Source
Microsoft
Microsoft FoundryModelUnverified

claude-opus-4-8 (2)

Stops answering on Microsoft Foundry.

in 10 monthsSep 1, 2027
Microsoft FoundryModelUnverified

Cohere-rerank-v4.0-fast (1)

Stops answering on Microsoft Foundry; use Cohere-rerank-v5-fast instead.

in 11 monthsSep 13, 2027
Microsoft FoundryModelUnverified

Cohere-rerank-v4.0-pro (1)

Stops answering on Microsoft Foundry; use Cohere-rerank-v5-pro instead.

in 11 monthsSep 13, 2027
Microsoft FoundryModelUnverified

gpt-oss-120b

Stops answering on Microsoft Foundry.

in 11 monthsSep 15, 2027