### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### The Feature

LiteLLM Proxy Version: v1.81.9

Gemini Pro 3.1 Preview model (and likely others) on Vertex AI have a limit of 10 image links. We regularly hit this limit and get this error:

``` 'litellm.BadRequestError: Vertex_aiException BadRequestError - { "error": { "code": 400, "message": "You can only include 10 image links. Please reduce the number accordingly.", "status": "INVALID_ARGUMENT" } } ```

This limit only applies to image links, there can be more base64 embedded images in the conversation. I know that LiteLLM is already fully capable of converting image links into embedded base64 encoded images (for models which do not support image links at all). Hence, I would really love to see it handling this limit internally and converting image links into base64 embedded images once this limit has been reached.

### Motivation, pitch

See above

### What part of LiteLLM is this about?

Proxy

### LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?

No

### Twitter / LinkedIn detail…