(I work at OpenRouter) If you send a PDF to our API we will:

1. Use native PDF parsing if the model supports it

2. Use this Mistral OCR model (we updated to this version yesterday)

3. UNLESS you override the "engine" param to use an alternate. We support a JS-based (non-LLM) parser as well [0]

So yes, in practice a lot of OCR jobs go to Mistral, but not all of them.

Would love to hear requests for other parsers if folks have them!

[0] https://openrouter.ai/docs/guides/overview/multimodal/pdfs#p...