It's now my open weight inference provider of choice, since on top of the privacy/security characteristics it's also reasonably cheap.
Batch API is a bit harder, not many models/providers support Batch. It primarily is only the Gemini/ChatGPT/Claude models that do. DigitalOcean does support a 50% discount on Batch API via them directly, not listed on OpenRouter.
[1] https://docs.digitalocean.com/products/inference/how-to/use-...
For Mythos and even Fable they require prompt retention on their end.
edit: or more precisely if you want to access Mythos/Fable ZDR does not apply, and depending on config the exclusion can affect other models.
But if their employer is bringing millions of dollars of potential spend to the table, can tell you from years of experience that turns a lot of 'no's' to 'yes'.
As for ZDR and court-orders, what would you rather happen there? Violate the law or comply with holding the data? I would bet that any ZDR agreement has this court-ordered risk mutually understood and agreed upon.