Chat

OpenRouter Chat API examples: basic agents, ordered model fallback, retries, structured output, and tool use.

Use OpenRouter’s Chat API to reach multiple models through one endpoint. Give an agent an ordered fallback list so a request that hits a rate limit, timeout, or overload retries on the next model.

For details, see examples in cookbook/90_models/openrouter/chat.

Example	Description
Basic	Run a minimal OpenRouter agent with sync, streaming, and async response variants.
Dynamic Model Router	Dynamic models provide automatic failover when the primary model encounters rate limits, timeouts, unavailability or model overload.
Retry	Review retry settings and why invalid model IDs cannot reliably exercise the retry path.
Structured Output	Compare JSON mode and native structured outputs on OpenRouter by generating a MovieScript Pydantic model.
Tool Use	Give an OpenRouter agent WebSearchTools and stream the answer in both sync and async runs.