# cohere-rerank-v3.5

Calls to the model cohere-rerank-v3.5 on Azure AI Foundry stopped working on May 14, 2026.

On May 14, 2026, Azure AI Foundry retired model cohere-rerank-v3.5. Requests targeting this model fail since that date. The change affects all calls relying on version 1 of the model.

## What to use instead

Microsoft recommends migrating to Cohere-rerank-v4.0-pro or Cohere-rerank-v4.0-fast.

- API: Azure AI Foundry (*.services.ai.azure.com)
- Model: cohere-rerank-v3.5
- Kind: Model retirement
- Takes effect: May 14, 2026
- Calls after that day: fail
- Calls it hits: `model cohere-rerank-v3.5`
- Source: [Deprecations page](https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule)
- Verified: November 6, 2026, against Azure AI Foundry's own pages
- Page: https://www.okapi.bot/models/azure-ai-foundry/cohere-rerank-v3.5/

## Azure AI Foundry's words

> Model: Cohere-rerank-v3.5; Version: 1; Lifecycle: Retired; Retirement date: 2026-05-14; Replacement: Cohere-rerank-v4.0-pro, Cohere-rerank-v4.0-fast

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent