openrouter-python-sdk-retry-errors/docs/models/chatstreamcompletioncreateparams.md

ChatStreamCompletionCreateParams

Chat completion request parameters

Fields

Field	Type	Required	Description	Example
stream	OptionalNullable[bool]	➖	Enable streaming response
messages	List[models.ChatCompletionMessageParam]	✔️	List of messages for the conversation	[ { "role": "user", "content": "Hello, how are you?" } ]
model	Optional[str]	➖	Model to use for completion
frequency_penalty	OptionalNullable[float]	➖	Frequency penalty (-2.0 to 2.0)
logit_bias	Dict[str, float]	➖	Token logit bias adjustments
logprobs	OptionalNullable[bool]	➖	Return log probabilities
top_logprobs	OptionalNullable[float]	➖	Number of top log probabilities to return (0-20)
max_completion_tokens	OptionalNullable[float]	➖	Maximum tokens in completion
max_tokens	OptionalNullable[float]	➖	Maximum tokens (deprecated, use max_completion_tokens)
metadata	Dict[str, str]	➖	Key-value pairs for additional object information (max 16 pairs, 64 char keys, 512 char values)
presence_penalty	OptionalNullable[float]	➖	Presence penalty (-2.0 to 2.0)
reasoning	OptionalNullable[models.ChatStreamCompletionCreateParamsReasoning]	➖	Reasoning configuration
response_format	Optional[models.ChatStreamCompletionCreateParamsResponseFormatUnion]	➖	Response format configuration
seed	OptionalNullable[int]	➖	Random seed for deterministic outputs
stop	OptionalNullable[models.ChatStreamCompletionCreateParamsStop]	➖	Stop sequences (up to 4)
stream_options	OptionalNullable[models.ChatStreamCompletionCreateParamsStreamOptions]	➖	N/A
temperature	OptionalNullable[float]	➖	Sampling temperature (0-2)
tool_choice	Optional[models.ChatCompletionToolChoiceOption]	➖	Tool choice configuration
tools	List[models.ChatCompletionTool]	➖	Available tools for function calling
top_p	OptionalNullable[float]	➖	Nucleus sampling parameter (0-1)
user	Optional[str]	➖	Unique user identifier
fallback_models	List[str]	➖	Order of models to fallback to for this request
reasoning_effort	OptionalNullable[models.ChatStreamCompletionCreateParamsReasoningEffort]	➖	Reasoning effort
provider	OptionalNullable[models.ChatStreamCompletionCreateParamsProvider]	➖	When multiple model providers are available, optionally indicate your routing preference.
plugins	List[models.ChatStreamCompletionCreateParamsPluginUnion]	➖	Plugins you want to enable for this request, including their settings.