Support OpenAI Anthropic etc models

### Description of the feature request:

Hi maintainers,

I’ve been following this excellent project and really appreciate the clean architecture.
To make the agent compatible with more frontier models (OpenAI, Anthropic, etc.), I put together a lightweight extension here:
https://github.com/ZhengKai91/multi-model-computer-use-preview

It keeps the original design while adding pluggable LLM clients.
If you find it useful, feel free to link or cherry-pick anything—would love to collaborate and help the ecosystem grow.

Thanks for the great work!

### What problem are you trying to solve with this feature?

_No response_

### Any other information you'd like to share?

_No response_