[BUG MODEL]: Confusing 404 error when sending `document_url` to `mistral-vibe-cli-latest`

[bilelomrani1]

Model

mistral-vibe-cli-latest

Request Payload

import asyncio
import os
from mistralai.client import Mistral

PDF_B64 = (
    "JVBERi0xLjAKMSAwIG9iajw8L1R5cGUvQ2F0YWxvZy9QYWdlcyAyIDAgUj4+ZW5kb2JqCjIg"
    "MCBvYmo8PC9UeXBlL1BhZ2VzL0tpZHNbMyAwIFJdL0NvdW50IDE+PmVuZG9iagozIDAgb2Jq"
    "PDwvVHlwZS9QYWdlL01lZGlhQm94WzAgMCAzIDNdL1BhcmVudCAyIDAgUj4+ZW5kb2JqCnhy"
    "ZWYKMCA0CjAwMDAwMDAwMDAgNjU1MzUgZiAKMDAwMDAwMDAwOSAwMDAwMCBuIAowMDAwMDAw"
    "MDU4IDAwMDAwIG4gCjAwMDAwMDAxMTUgMDAwMDAgbiAKdHJhaWxlcjw8L1NpemUgNC9Sb290"
    "IDEgMCBSPj4Kc3RhcnR4cmVmCjE5MAolJUVPRg=="
)

async def main():
    client = Mistral(api_key=os.environ["MISTRAL_API_KEY"])
    resp = await client.chat.complete_async(
        model="mistral-vibe-cli-latest",
        messages=[{
            "role": "user",
            "content": [
                {
                    "type": "document_url",
                    "document_url": f"data:application/pdf;base64,{PDF_B64}",
                },
                {"type": "text", "text": "What is in this document?"},
            ],
        }],
        max_tokens=16,
    )

asyncio.run(main())

Output

{
  "object": "error",
  "message": "The model `mistral-ocr-2411` does not exist for router `ocr`.",
  "type": "model_not_found",
  "param": null,
  "code": "3040",
  "raw_status_code": 404
}

Expected Behavior

document_url is (as far as I know) not documented for mistral-vibe-cli so I'm not sure whether or not it's expected to work, but even if it's not, I think the API should return a clear 400 error indicating the content type is unsupported for this model (similar to how image_url validation works for non-vision models).

Instead, the server currently silently routes the request to an OCR model (mistral-ocr-2411) that does not exist. The 404 status code and model_not_found type are a bit misleading.

Additional Context

No response

Suggested Solutions

No response