Generate with Streaming

POST

This API is marked as “Legacy” and is no longer maintained. Follow the migration guide to start using the Chat API.

Generates realistic text conditioned on a given input.

Headers

X-Client-NamestringOptional

The name of the project that is making the request.

Request

This endpoint expects an object.
promptstringRequired

The input text that serves as the starting point for generating the response. Note: The prompt will be pre-processed and modified before reaching the model.

streamtrueRequired

When true, the response will be a JSON stream of events. Streaming is beneficial for user interfaces that render the contents of the response piece by piece, as it gets generated.

The final event will contain the complete response, and will contain an is_finished field set to true. The event will also contain a finish_reason, which can be one of the following:

  • COMPLETE - the model sent back a finished reply
  • MAX_TOKENS - the reply was cut off because the model reached the maximum number of tokens for its context length
  • ERROR - something went wrong when generating the reply
  • ERROR_TOXIC - the model generated a reply that was deemed toxic
modelstringOptional

The identifier of the model to generate with. Currently available models are command (default), command-nightly (experimental), command-light, and command-light-nightly (experimental). Smaller, “light” models are faster, while larger models will perform better. Custom models can also be supplied with their full ID.

num_generationsintegerOptional

The maximum number of generations that will be returned. Defaults to 1, min value of 1, max value of 5.

max_tokensintegerOptional

The maximum number of tokens the model will generate as part of the response. Note: Setting a low value may result in incomplete generations.

This parameter is off by default, and if it’s not specified, the model will continue generating until it emits an EOS completion token. See BPE Tokens for more details.

Can only be set to 0 if return_likelihoods is set to ALL to get the likelihood of the prompt.

truncateenumOptionalDefaults to END
Allowed values: NONESTARTEND

One of NONE|START|END to specify how the API will handle inputs longer than the maximum token length.

Passing START will discard the start of the input. END will discard the end of the input. In both cases, input is discarded until the remaining input is exactly the maximum input token length for the model.

If NONE is selected, when the input exceeds the maximum input token length an error will be returned.

temperaturedoubleOptional

A non-negative float that tunes the degree of randomness in generation. Lower temperatures mean less random generations. See Temperature for more details. Defaults to 0.75, min value of 0.0, max value of 5.0.

seedintegerOptional

If specified, the backend will make a best effort to sample tokens deterministically, such that repeated requests with the same seed and parameters should return the same result. However, determinism cannot be totally guaranteed. Compatible Deployments: Cohere Platform, Azure, AWS Sagemaker/Bedrock, Private Deployments

presetstringOptional

Identifier of a custom preset. A preset is a combination of parameters, such as prompt, temperature etc. You can create presets in the playground. When a preset is specified, the prompt parameter becomes optional, and any included parameters will override the preset’s parameters.

end_sequenceslist of stringsOptional

The generated text will be cut at the beginning of the earliest occurrence of an end sequence. The sequence will be excluded from the text.

stop_sequenceslist of stringsOptional

The generated text will be cut at the end of the earliest occurrence of a stop sequence. The sequence will be included the text.

kintegerOptional

Ensures only the top k most likely tokens are considered for generation at each step. Defaults to 0, min value of 0, max value of 500.

pdoubleOptional

Ensures that only the most likely tokens, with total probability mass of p, are considered for generation at each step. If both k and p are enabled, p acts after k. Defaults to 0.75. min value of 0.01, max value of 0.99.

frequency_penaltydoubleOptional

Used to reduce repetitiveness of generated tokens. The higher the value, the stronger a penalty is applied to previously present tokens, proportional to how many times they have already appeared in the prompt or prior generation.

Using frequency_penalty in combination with presence_penalty is not supported on newer models.

presence_penaltydoubleOptional

Defaults to 0.0, min value of 0.0, max value of 1.0.

Can be used to reduce repetitiveness of generated tokens. Similar to frequency_penalty, except that this penalty is applied equally to all tokens that have already appeared, regardless of their exact frequencies.

Using frequency_penalty in combination with presence_penalty is not supported on newer models.

return_likelihoodsenumOptionalDefaults to NONE
Allowed values: GENERATIONALLNONE

One of GENERATION|ALL|NONE to specify how and if the token likelihoods are returned with the response. Defaults to NONE.

If GENERATION is selected, the token likelihoods will only be provided for generated text.

If ALL is selected, the token likelihoods will be provided both for the prompt and the generated text.

raw_promptingbooleanOptional

When enabled, the user’s prompt will be sent to the model without any pre-processing.

Response

This endpoint returns a stream of object.
Text Generation
OR
Stream End
OR
Stream Error
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