mistral-ocr-4-0 API limits

Question

mistral-ocr-4-0 API limits

Alexander Novikov 80

Good day, experts.

Mistral says that the limits for the new "mistral-ocr-4-0" model are 1,000 pages and 50MB.

However, when I deploy this model in Azure AI Foundry and use it via API, I appear to hit a limit of 30 pages.

Could you please confirm what are the actual limits for this model in Azure AI Foundry?

Kind regards,

Alex

Sai Kiran Mudavath 345 Reputation points Microsoft External Staff Moderator

2026-10-07T05:30:41.1733333+00:00

Hi @Alexander Novikov ,

Did you get any chance to review the above response. Do let me know if you have any further queries.

Thank you!
Sai Kiran Mudavath 345 Reputation points Microsoft External Staff Moderator

2026-10-08T01:38:31.6033333+00:00

Hi @Alexander Novikov

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.

Thank You!
Alexander Novikov 80 Reputation points

2026-10-09T02:53:16.8133333+00:00

Hi, Sai Kiran.

Thanks for your response. It is unfortunate Azure does not increase the limits, but it is what it is.

Regards,

Alex

Answer accepted by question author

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Your answer

Sai Kiran Mudavath 345 Reputation points Microsoft External Staff Moderator

2026-10-07T05:30:41.1733333+00:00

Hi @Alexander Novikov ,

Did you get any chance to review the above response. Do let me know if you have any further queries.

Thank you!
Sai Kiran Mudavath 345 Reputation points Microsoft External Staff Moderator

2026-10-08T01:38:31.6033333+00:00

Hi @Alexander Novikov

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.

Thank You!
Alexander Novikov 80 Reputation points

2026-10-09T02:53:16.8133333+00:00

Hi, Sai Kiran.

Thanks for your response. It is unfortunate Azure does not increase the limits, but it is what it is.

Regards,

Alex

Answer 1

Hello Alexander Novikov

The 30-page behavior is expected for the current Azure-hosted mistral-ocr-4-0 deployment.

For mistral-ocr-4-0 sold directly by Azure in Microsoft Foundry, Microsoft currently documents:

Maximum PDF pages: 30
Maximum PDF size: 30 MB
Model status: Preview

This is a per-request model/service limit, not your subscription quota or RPM/TPM quota, so requesting a quota increase would not normally raise it. Microsoft Learn

The confusion is understandable because Azure previously documented Mistral-OCR-2503 on the older Hub-based deployment path with 1,000 pages / 50 MB. That is a different model/deployment path and those limits should not be applied to the newer Azure-direct mistral-ocr-4-0. Microsoft Learn

There are also recent Q&A cases for mistral-document-ai-2512, which uses the same current Azure document-processing limits, where Microsoft explicitly confirms 30 pages / 30 MB. Microsoft Learn

So for your deployment the practical limit is:

mistral-ocr-4-0 in Microsoft Foundry: ≤30 pages AND ≤30 MB per PDF request.

For larger documents, split the PDF into chunks of no more than 30 pages/30 MB, process them separately, and merge the results while preserving the original page numbers. Mistral itself publishes a document-chunking utility specifically designed to work with provider-specific limits, including Azure MaaS endpoints. Mistral AI

Mistral's native service and Azure Foundry are separate serving platforms, so the limits advertised for Mistral's own API do not automatically apply to an Azure-hosted deployment. Mistral's current documentation also describes document limits as service/account-specific rather than a universal model property. Mistral AI

Official Microsoft reference: Foundry Models sold by Azure — Mistral models

Alexander Novikov 80 Reputation points

2026-10-09T02:53:59.3766667+00:00

Thank you, Andriy.

Answer 2

Hello @Alexander Novikov ,

Thank you for reaching out.

The 30-page behavior is consistent with the current Azure-hosted mistral-ocr-4-0 deployment.

For mistral-ocr-4-0 sold directly by Azure in Microsoft Foundry, Microsoft currently documents:

Maximum PDF pages: 30
Maximum PDF size: 30 MB
Model status: Preview

These are per-request model/service input limits, separate from subscription-level quota and RPM/TPM limits. Increasing your Foundry quota would therefore not increase the maximum number of pages supported in a single OCR request.

The 1,000-page / 50 MB limit you referenced should not be applied to the current Azure-hosted mistral-ocr-4-0 deployment. The applicable limits for your Azure deployment are the ones documented by Microsoft for the Azure-hosted model.

For documents exceeding these limits, split the PDF into multiple requests of no more than 30 pages and 30 MB per request, and process the chunks separately.

References: