Custom (any provider)

Custom lets you configure any of the three providers manually instead of using a preset. The Provider dropdown selects the protocol: OpenAI Compatible (LiteLLM, Together, Groq, etc.), Anthropic Claude, or Google Gemini.

Providers without a preset, such as OpenCode, are configured this way: pick the Provider whose protocol matches the model, point it at the right endpoint, and enable the proxy when the provider blocks browser requests.

Custom is the escape hatch

If an OpenAI-compatible endpoint behaves oddly, first try toggling the legacy endpoint option. Most incompatibilities are protocol-level, not model-level.