Optional
audioOptional
includeSpecify additional output data to include in the model response.
Optional
modalitiesOutput types that you would like the model to generate for this request. Most models are capable of generating text, which is the default:
["text"]
The gpt-4o-audio-preview
model can also be used to
generate audio. To request that
this model generate both text and audio responses, you can use:
["text", "audio"]
Optional
optionsAdditional options to pass to the underlying axios request.
Optional
parallel_The model may choose to call multiple functions in a single turn. You can set parallel_tool_calls to false which ensures only one tool is called at most. Learn more
Optional
predictionStatic predicted output content, such as the content of a text file that is being regenerated. Learn more.
Optional
previous_The unique ID of the previous response to the model. Use this to create multi-turn conversations.
Optional
promptUsed by OpenAI to cache responses for similar requests to optimize your cache
hit rates. Replaces the user
field.
Learn more.
Optional
promptAdds a prompt index to prompts passed to the model to track what prompt is being used for a given generation.
Optional
reasoningOptions for reasoning models.
Note that some options, like reasoning summaries, are only available when using the responses API. If these options are set, the responses API will be used to fulfill the request.
These options will be ignored when not using a reasoning model.
Optional
response_An object specifying the format that the model must output.
Optional
seedWhen provided, the completions API will make a best effort to sample
deterministically, such that repeated requests with the same seed
and parameters should return the same result.
Optional
service_Service tier to use for this request. Can be "auto", "default", or "flex" Specifies the service tier for prioritization and latency optimization.
Optional
stream_Additional options to pass to streamed completions. If provided, this takes precedence over "streamUsage" set at initialization time.
Optional
strictIf true
, model output is guaranteed to exactly match the JSON Schema
provided in the tool definition. If true
, the input schema will also be
validated according to
https://platform.openai.com/docs/guides/structured-outputs/supported-schemas.
If false
, input schema will not be validated and model output will not
be validated.
If undefined
, strict
argument will not be passed to the model.
Optional
textConfiguration options for a text response from the model. Can be plain text or structured JSON data.
Optional
tool_Specifies which tool the model should use to respond. Can be an OpenAIToolChoice or a ResponsesToolChoice. If not set, the model will decide which tool to use automatically.
Optional
toolsA list of tools that the model may use to generate responses. Each tool can be a function, a built-in tool, or a custom tool definition. If not provided, the model will not use any tools.
Optional
truncationThe truncation strategy to use for the model response.
Optional
verbosityThe verbosity of the model's response.
Parameters for audio output. Required when audio output is requested with
modalities: ["audio"]
. Learn more.