# MedLM

Calls to the model MedLM on Vertex AI (us-central1-aiplatform.googleapis.com) stopped working on September 29, 2025.

## The error Vertex AI (us-central1-aiplatform.googleapis.com) returns once MedLM is gone

HTTP 404

```json
{"error":{"code":404,"message":"Publisher model `projects/{project}/locations/{region}/publishers/google/models/MedLM` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region.","status":"NOT_FOUND"}}
```

- API: Vertex AI (us-central1-aiplatform.googleapis.com) (us-central1-aiplatform.googleapis.com)
- Model: MedLM
- Kind: Model retirement
- Announced: May 14, 2025
- Takes effect: September 29, 2025
- Calls after that day: fail
- Calls it hits: `model MedLM`
- Source: [Changelog](https://docs.cloud.google.com/vertex-ai/generative-ai/docs/release-notes)
- Verified: October 30, 2026, against Vertex AI (us-central1-aiplatform.googleapis.com)'s own pages
- Page: https://www.okapi.bot/models/vertex-ai-2/medlm/

## Vertex AI (us-central1-aiplatform.googleapis.com)'s words

> Access to MedLM will no longer be available on or after September 29, 2025.

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