Create Chat Completion
Creates a chat completion in OpenRouter.
POST
Query
Field selectionChoose which fields should be included in the response. Learn more
string
Comma-separated response fields to include.
Body
Arguments
stringrequired
OpenRouter model identifier, for example openai/gpt-5.2.
array of objectrequired
Conversation messages sent to the chat completion endpoint.
stringrequired
Text content for the message.
Uncommon arguments
number
Sampling temperature.
number
Maximum number of completion tokens.
boolean
Whether to stream incremental tokens.