### Check for existing issues

- [x] I have searched the existing issues and checked that my issue is not a duplicate.

### The Feature

langfuse otel integration supports taking keys and host only from env. it should be enabled to explictly pass these params when initializing client/calling acompletion and only derive params from env as fallback

### Motivation, pitch

it is a better practice security wise to not export keys to env

### What part of LiteLLM is this about?

SDK (litellm Python package)

### LiteLLM is hiring a founding backend engineer, are you interested in joining us and shipping to all our users?

No

### Twitter / LinkedIn details

_No response_