Add support for Opik for LLM Tracing

[potoos]

Hi! I'm a huge fan of open-webui and use it extensively. I'm looking for a way to track traces (and then later evaluations) but I see there's only support for Langfuse. I suggest to add support for Opik as well. I've switched from Langfuse to Opik a few months ago and I find Opik to be much stabler and personally feel like the UI is nicer.
https://github.com/comet-ml/opik

Opik is fully open source and runs locally. I already have it running alongside open-webui. Looking at 143cf7e it should be trivial to add Opik support. I'm happy to try an open a PR myself too.

[tjbck]

PR Welcome!

[Lothiraldan]

Hey @tjbck ! We went ahead and opened this PR for the integration. Let me know if you have any thoughts—we’re happy to make any changes if needed!

[Lothiraldan]

Hi @potoos, I work on Opik at Comet and we would be happy to collaborate on a PR if you want.

[Lothiraldan]

I’ve opened a PR to add a new filter using Opik, @potoos here it is #466. Please let me know when you give it a try.

Open WebUI is an amazing project, big thanks to @tjbck for all your great work!