Backboard now supports OpenRouter automatic model selection (openrouter/auto) and per request provider selection. Here is how both work, with JSON examples for the Backboard API.
Short answer
Backboard now gives you two independent routing controls for OpenRouter requests:
Automatic model selection. Set llm_provider to openrouter and model_name to openrouter/auto. OpenRouter classifies the prompt and picks the model. You pay the standard rate of the model it chooses, with no additional router fee.
Provider selection. Pin a specific model to a specific upstream provider with the openrouter.providers array, and keep allow_fallbacks on so the request still completes when that provider is unavailable.
