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API breaking changes in September 2027

20 changes take effect this month.

September 2027 20

  1. Azure AI Foundry claude-mythos-5-1Model retirement Stops workingin 299 days
  2. Azure AI Foundry claude-opus-4-8Model retirement Stops workingin 299 days
  3. Azure AI Foundry gpt-5.4Model retirement Stops workingin 300 days
  4. Azure AI Foundry gpt-5.4-proModel retirement Stops workingin 305 days
  5. Azure AI Foundry gpt-image-2.5-flareModel retirement Stops workingin 307 days
  6. Azure AI Foundry gpt-image-2.5-sunburstModel retirement Stops workingin 307 days
  7. Azure AI Foundry cohere-rerank-v4.0-fastModel retirement Stops workingin 311 days
  8. Azure AI Foundry cohere-rerank-v4.0-proModel retirement Stops workingin 311 days
  9. Azure AI Foundry gpt-oss-120bModel retirement Stops workingin 313 days
  10. Azure AI Foundry gpt-5.4-miniModel retirement Stops workingin 319 days
  11. Azure AI Foundry gpt-5.4-nanoModel retirement Stops workingin 319 days
  12. Firebase Cloud Messaging /fcm/notificationRemoval Stops workingin 327 days
  13. Firebase Cloud Messaging /gcm/notificationRemoval Stops workingin 327 days
  14. Firebase Cloud Messaging /iid/notificationRemoval Stops workingin 327 days
  15. Firebase Cloud Messaging /notificationRemoval Stops workingin 327 days
  16. iid.googleapis.com GET /iid/info/*Endpoint removal Stops workingin 327 days
  17. iid.googleapis.com POST /iid/v1:batchAddEndpoint removal Stops workingin 327 days
  18. iid.googleapis.com POST /iid/v1:batchImportEndpoint removal Stops workingin 327 days
  19. iid.googleapis.com POST /iid/v1:batchRemoveEndpoint removal Stops workingin 327 days
  20. iid.googleapis.com /iid/v1/*Removal Stops workingin 327 days

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Okapi finds the calls a breaking change hits in your code and opens the pull request that fixes them.

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