Creates a model response for the given chat conversation.

post

https://integrate.api.nvidia.com/v1/chat/completions

Given a list of messages comprising a conversation, the model will return a response. Compatible with OpenAI. See https://platform.openai.com/docs/api-reference/chat/create

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Body Params

OpenAI ChatCompletionRequest

model

string

Defaults to deepseek-ai/deepseek-v4.1-flash

max_tokens

integer

1 to 1048576

Defaults to 262144

The maximum number of tokens to generate in any given call. Note that the model is not aware of this value, and generation will simply stop at the number of tokens specified.

stream

boolean

Defaults to false

If set, partial message deltas will be sent. Tokens will be sent as data-only server-sent events (SSE) as they become available (JSON responses are prefixed by data: ), with the stream terminated by a data: [DONE] message.

temperature

number

0 to 1

Defaults to 1

The sampling temperature to use for text generation. The higher the temperature value is, the less deterministic the output text will be. DeepSeek recommends temperature 1.0 and top_p 0.95 or 1.0.

top_p

number

0 to 1

Defaults to 0.95

The top-p sampling mass used for text generation. The top-p value determines the probability mass that is sampled at sampling time. For example, if top_p = 0.2, only the most likely tokens (summing to 0.2 cumulative probability) will be sampled. DeepSeek recommends temperature 1.0 and top_p 0.95 or 1.0.

messages

array of objects

required

A list of messages comprising the conversation so far.

Messages*

Responses

200Successful Response

402Payment Required

422Validation Error