I've never used a Grok model before because I have my OpenRouter settings on ZDR-only. I just checked, and apparently there are ZDR xAI endpoints now [1], so I might actually try this. Out of curiosity, does anyone here happen to know when those were added?

[1]: However it does say "Requires user IDs" under anonymity, which is unusual on OpenRouter and not something I particularly like to see. Generally, OpenRouter is a proxy that anonymizes requests to providers, and I can't find an account-wide setting to enforce that like ZDR-only.