HTTP API reference

Contents

Authentication

All API requests must be authenticated with a token. Include this header with all requests:

Authorization: Token <token>

Rate limits

We limit the number of API requests that can be made to Replicate:

  • You can call create prediction at 10 requests per second (average) with a burst capacity of up to 600 requests.
  • All other endpoints you can call at 50 requests per second (average) with a burst capacity of up to 3000 requests.

Whenever your request rate is below your limit, you will accumulate burst capacity up to the stated maximum. For example, if your rate limit is 2 requests per second with a burst capacity of up to 10 requests, then any of the following scenarios would be allowed:

  • send 10 requests all at once; wait 5 seconds; send 10 requests all at once
  • send 10 requests all at once; send 1 request per second for the next 10 seconds; send 10 requests all at once
  • send 2 requests per second continuously

If you hit a limit, you will receive a response with status 429 with a body like:

{"detail":"Request was throttled. Expected available in 1 second."}

The numbers you see above may already reflect custom limits we have set for you. If you want higher limits, email us at team@replicate.com.

Get a collection of models

GET https://api.replicate.com/v1/collections/{collection_slug}

Example cURL request:

$ curl -s \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/collections/super-resolution

The response is a collection object with a nested list of model objects within that collection:

{
  "name": "Super resolution",
  "slug": "super-resolution",
  "description": "Upscaling models that create high-quality images from low-quality images.",
  "models": [...]
}

Request path parameters

collection_slug

The slug of the collection, like super-resolution or image-restoration. See replicate.com/collections

Get a model

GET https://api.replicate.com/v1/models/{model_owner}/{model_name}

Example cURL request:

$ curl -s \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/models/replicate/hello-world

The response is a model object in the following format:

{
  "url": "https://replicate.com/replicate/hello-world",
  "owner": "replicate",
  "name": "hello-world",
  "description": "A tiny model that says hello",
  "visibility": "public",
  "github_url": "https://github.com/replicate/cog-examples",
  "paper_url": null,
  "license_url": null,
  "run_count": 12345,
  "cover_image_url": 
  "default_example": {...}
  "latest_version": {...}
}

The cover_image_url string is an HTTPS URL for an image file. This can be:

  • An image uploaded by the model author.
  • The output file of the example prediction, if the model author has not set a cover image.
  • The input file of the example prediction, if the model author has not set a cover image and the example prediction has no output file.
  • A generic fallback image.

The default_example object is a prediction created with this model.

The latest_version object is the model's most recently pushed version.

Request path parameters

model_owner

The name of the user or organization that owns the model.

model_name

The name of the model.

Get a list of model versions

GET https://api.replicate.com/v1/models/{model_owner}/{model_name}/versions

Example cURL request:

$ curl -s \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/models/replicate/hello-world/versions

The response is a JSON array of Version objects, sorted with the most recent version first:

{
  "previous": null,
  "next": null,
  "results": [
    {
      "id": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
      "created_at": "2022-04-26T19:29:04.418669Z",
      "cog_version": "0.3.0",
      "openapi_schema": {...}
    },
    {
      "id": "e2e8c39e0f77177381177ba8c4025421ec2d7e7d3c389a9b3d364f8de560024f",
      "created_at": "2022-03-21T13:01:04.418669Z",
      "cog_version": "0.3.0",
      "openapi_schema": {...}
    }
  ]
}

Request path parameters

model_owner

The name of the user or organization that owns the model.

model_name

The name of the model.

Delete a model version

DELETE https://api.replicate.com/v1/models/{model_owner}/{model_name}/versions/{version_id}

Delete a model version and all associated predictions, including all output files.

Restrictions:

  • You can only delete versions from models you own.
  • You can only delete versions from private models.
  • You cannot delete a version if a user other than you has run predictions with it.

Example cURL request:

$ curl -s -X DELETE \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/models/replicate/hello-world/versions/5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa

The response is an empty 202, indicating the deletion request has been accepted. It might take a few minutes to be processed.

Request path parameters

model_owner

The name of the user or organization that owns the model.

model_name

The name of the model.

version_id

The ID of the version.

Get a model version

GET https://api.replicate.com/v1/models/{model_owner}/{model_name}/versions/{version_id}

Example cURL request:

$ curl -s \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/models/replicate/hello-world/versions/5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa

The response is the version object:

{
  "id": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
  "created_at": "2022-04-26T19:29:04.418669Z",
  "cog_version": "0.3.0",
  "openapi_schema": {...}
}

Every model describes its inputs and outputs with OpenAPI Schema Objects in the openapi_schema property.

The openapi_schema.components.schemas.Input property for the replicate/hello-world model looks like this:

{
  "type": "object",
  "title": "Input",
  "required": [
    "text"
  ],
  "properties": {
    "text": {
      "x-order": 0,
      "type": "string",
      "title": "Text",
      "description": "Text to prefix with 'hello '"
    }
  }
}

The openapi_schema.components.schemas.Output property for the replicate/hello-world model looks like this:

{
  "type": "string",
  "title": "Output"
}

For more details, see the docs on Cog's supported input and output types

Request path parameters

model_owner

The name of the user or organization that owns the model.

model_name

The name of the model.

version_id

The ID of the version.

Get a list of predictions

GET https://api.replicate.com/v1/predictions

Get a paginated list of predictions that you've created with your account. This includes predictions created from the API and the Replicate website. Returns 100 records per page.

Example cURL request:

$ curl -s \
  -H "Authorization: Token <paste-your-token-here>" \
  https://api.replicate.com/v1/predictions

The response is a JSON object in the following format:

{
  "previous": null,
  "next": "https://api.replicate.com/v1/predictions?cursor=cD0yMDIyLTAxLTIxKzIzJTNBMTglM0EyNC41MzAzNTclMkIwMCUzQTAw",
  "results": [{}, {}, {}]
}

The results key is a list of prediction objects in the following format:

{
  "id": "jpzd7hm5gfcapbfyt4mqytarku",
  "version": "b21cbe271e65c1718f2999b038c18b45e21e4fba961181fbfae9342fc53b9e05",
  "urls": {
    "get": "https://api.replicate.com/v1/predictions/jpzd7hm5gfcapbfyt4mqytarku",
    "cancel": "https://api.replicate.com/v1/predictions/jpzd7hm5gfcapbfyt4mqytarku/cancel"
  },
  "created_at": "2022-04-26T20:00:40.658234Z",
  "started_at": "2022-04-26T20:00:84.583803Z",
  "completed_at": "2022-04-26T20:02:27.648305Z",
  "source": "web",
  "status": "succeeded"
}
  • id: The unique ID of the prediction. Can be used to get a single prediction.
  • version: The unique ID of model version used to create the prediction.
  • urls: A convenience object that can be used to construct new API requests against the given prediction.
  • source: Indicates where the prediction was created. Possible values are web or api.
  • status: Status of the prediction. Refer to get a single prediction for possible values.

Create a prediction

POST https://api.replicate.com/v1/predictions

Calling this operation starts a new prediction for the version and inputs you provide. As models can take several seconds or more to run, the output will not be available immediately. To get the final result of the prediction you should either provide a webhook URL for us to call when the results are ready, or poll the get a prediction endpoint until it has one of the terminated statuses.

Input and output (including any files) are automatically deleted after an hour, so you must save a copy of any files in the output if you'd like to continue using them.

Example request body:

{
  "version": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
  "input": {
    "text": "Alice"
  }
}

Example cURL request:

$ curl -s -X POST \
  -d '{"version": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa", "input": {"text": "Alice"}}' \
  -H "Authorization: Token <paste-your-token-here>" \
  -H 'Content-Type: application/json' \
  https://api.replicate.com/v1/predictions

Example response:

{
  "id": "ufawqhfynnddngldkgtslldrkq",
  "version": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
  "urls": {
    "get": "https://api.replicate.com/v1/predictions/ufawqhfynnddngldkgtslldrkq",
    "cancel": "https://api.replicate.com/v1/predictions/ufawqhfynnddngldkgtslldrkq/cancel"
  },
  "created_at": "2022-04-26T22:13:06.224088Z",
  "started_at": null,
  "completed_at": null,
  "status": "starting",
  "input": {
    "text": "Alice"
  },
  "output": null,
  "error": null,
  "logs": null,
  "metrics": {}
}

Request body

input

The model's input as a JSON object. The input depends on what model you are running. To see the available inputs, click the "Run with API" tab on the model you are running. For example, stability-ai/stable-diffusion takes prompt as an input.

Files should be passed as data URLs or HTTPS URLs.

version

The ID of the model version that you want to run.

webhook

An HTTPS URL for receiving a webhook when the prediction has new output. The webhook will be a POST request where the request body is the same as the response body of the get prediction operation. If there are network problems, we will retry the webhook a few times, so make sure it can be safely called more than once.

webhook_events_filter

By default, we will send requests to your webhook URL whenever there are new logs, new outputs, or the prediction has finished. You can change which events trigger webhook requests by specifying webhook_events_filter in the prediction request.

  • start: immediately on prediction start
  • output: each time a prediction generates an output (note that predictions can generate multiple outputs)
  • logs: each time log output is generated by a prediction
  • completed: when the prediction reaches a terminal state (succeeded/canceled/failed)

For example, if you only wanted requests to be sent at the start and end of the prediction, you would provide:

{
  "version": "5c7d5dc6dd8bf75c1acaa8565735e7986bc5b66206b55cca93cb72c9bf15ccaa",
  "input": {
    "text": "Alice"
  },
  "webhook": "https://example.com/my-webhook",
  "webhook_events_filter": ["start", "completed"]
}

Requests for event types output and logs will be sent at most once every 500ms. If you request start and completed webhooks, then they'll always be sent regardless of throttling.

Get a prediction

GET https://api.replicate.com/v1/predictions/{prediction_id}

Returns the same response as the create a prediction operation. status will be one of:

  • starting: the prediction is starting up. If this status lasts longer than a few seconds, then it's typically because a new worker is being started to run the prediction.
  • processing: the predict() method of the model is currently running.
  • succeeded: the prediction completed successfully.
  • failed: the prediction encountered an error during processing.
  • canceled: the prediction was canceled by the user.

In the case of success, output will be an object containing the output of the model. Any files will be represented as URLs. You'll need to pass the Authorization header to request them.

In the case of failure, error will contain the error encountered during the prediction.

Terminated predictions (with a status of succeeded, failed or canceled) include a metrics object with a predict_time property showing the amount of CPU or GPU time, in seconds, that this prediction used while running. This is the time you're billed for, and it doesn't include time waiting for the prediction to start.

Example cURL request:

$ curl -s \
-H "Authorization: Token <paste-your-token-here>" \
https://api.replicate.com/v1/predictions/rrr4z55ocneqzikepnug6xezpe

The response is the prediction object:

{
  "id": "rrr4z55ocneqzikepnug6xezpe",
  "version": "be04660a5b93ef2aff61e3668dedb4cbeb14941e62a3fd5998364a32d613e35e",
  "urls": {
    "get": "https://api.replicate.com/v1/predictions/rrr4z55ocneqzikepnug6xezpe",
    "cancel": "https://api.replicate.com/v1/predictions/rrr4z55ocneqzikepnug6xezpe/cancel"
  },
  "created_at": "2022-09-13T22:54:18.578761Z",
  "started_at": "2022-09-13T22:54:19.438525Z",
  "completed_at": "2022-09-13T22:54:23.236610Z",
  "source": "api",
  "status": "succeeded",
  "input": {
    "prompt": "oak tree with boletus growing on its branches"
  },
  "output": [
    "https://replicate.com/api/models/stability-ai/stable-diffusion/files/9c3b6fe4-2d37-4571-a17a-83951b1cb120/out-0.png"
  ],
  "error": null,
  "logs": "Using seed: 36941...",
  "metrics": {
    "predict_time": 4.484541
  }
}

Request path parameters

prediction_id

The ID of the prediction you want to get.

Cancel a prediction

POST https://api.replicate.com/v1/predictions/{prediction_id}/cancel

Request path parameters

prediction_id

The ID of the prediction you want to get.