Type of Documentation Issue

Missing documentation

Documentation Page

https://docs.browser-use.com/open-source/supported-models (also skills/open-source/references/models.md)

Issue Description

The supported-models reference shows OpenAI-compatible hosts (Qwen, ModelScope, Novita, PZERO) used through ChatOpenAI and base_url. Opper works the same way, but users have to find the base URL, the key variable and the model name format themselves.

Opper is an EU-hosted AI gateway with 700+ models from 50+ providers behind one OpenAI-compatible API. No new provider class is needed; ChatOpenAI with base_url is enough.

Disclosure: Opper is my startup. I have a docs-only PR ready that adds the section below.

Suggested Changes

Add an Opper subsection under "OpenAI-Compatible APIs", after PZERO:

import os

llm = ChatOpenAI(
    model="claude-sonnet-4-6",
    base_url="https://api.opper.ai/v3/compat",
    api_key=os.environ["OPPER_API_KEY"],
)

Env: OPPER_API_KEY, get a key at https://platform.opper.ai. Use the /v3/compat base URL (not /v3/compat/chat/completions). Model names such as claude-sonnet-4-6 or gpt-5.4-mini cover every provider that serves the model. Models: https://opper.ai/models