openapi: 3.0.3
info:
  title: Pinecone Inference API
  description: Pinecone is a vector database that makes it easy to search and retrieve billions of high-dimensional vectors.
  contact:
    name: Pinecone Support
    url: https://support.pinecone.io
    email: support@pinecone.io
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  version: 2025-01
servers:
- url: https://api.pinecone.io
  description: Production API endpoints
paths:
  /embed:
    post:
      tags:
      - Inference
      summary: Generate vectors
      description: |-
        Generate vector embeddings for input data. This endpoint uses Pinecone's [hosted embedding models](https://docs.pinecone.io/guides/index-data/create-an-index#embedding-models).
      operationId: embed
      requestBody:
        description: Generate embeddings for inputs.
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/EmbedRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/EmbeddingsList'
        '400':
          description: Bad request. The request body included invalid request parameters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                index-metric-validation-error:
                  summary: Validation error
                  value:
                    error:
                      code: INVALID_ARGUMENT
                      message: Bad request. The request body included invalid request parameters.
                    status: 400
        '401':
          description: 'Unauthorized. Possible causes: Invalid API key.'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                unauthorized:
                  summary: Unauthorized
                  value:
                    error:
                      code: UNAUTHENTICATED
                      message: Invalid API key.
                    status: 401
        '500':
          description: Internal server error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                internal-server-error:
                  summary: Internal server error
                  value:
                    error:
                      code: UNKNOWN
                      message: Internal server error
                    status: 500
  /rerank:
    post:
      tags:
      - Inference
      summary: Rerank results
      description: |-
        Rerank query results according to their relevance to a query. This endpoint uses [Pinecone Inference](https://docs.pinecone.io/guides/index-data/indexing-overview#vector-embedding).

        For guidance and examples, see [Rerank results](https://docs.pinecone.io/guides/search/rerank-results).
      operationId: rerank
      requestBody:
        description: Rerank documents for the given query
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RerankRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RerankResult'
        '400':
          description: Bad request. The request body included invalid request parameters.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                index-metric-validation-error:
                  summary: Validation error
                  value:
                    error:
                      code: INVALID_ARGUMENT
                      message: Bad request. The request body included invalid request parameters.
                    status: 400
        '401':
          description: 'Unauthorized. Possible causes: Invalid API key.'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                unauthorized:
                  summary: Unauthorized
                  value:
                    error:
                      code: UNAUTHENTICATED
                      message: Invalid API key.
                    status: 401
        '500':
          description: Internal server error.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                internal-server-error:
                  summary: Internal server error
                  value:
                    error:
                      code: UNKNOWN
                      message: Internal server error
                    status: 500
components:
  schemas:
    RerankRequest:
      type: object
      properties:
        model:
          example: bge-reranker-v2-m3
          description: The [model](https://docs.pinecone.io/guides/search/rerank-results#reranking-models) to use for reranking.
          type: string
        query:
          example: What is the capital of France?
          description: The query to rerank documents against.
          type: string
        top_n:
          example: 5
          description: The number of results to return sorted by relevance. Defaults to the number of inputs.
          type: integer
        return_documents:
          example: true
          description: Whether to return the documents in the response.
          default: true
          type: boolean
        rank_fields:
          description: |
            The field(s) to consider for reranking. If not provided, the default is `["text"]`.

            The number of fields supported is [model-specific](https://docs.pinecone.io/guides/search/rerank-results#reranking-models).
          default:
          - text
          type: array
          items:
            type: string
        documents:
          description: The documents to rerank.
          type: array
          items:
            $ref: '#/components/schemas/Document'
        parameters:
          example:
            truncate: END
          description: Additional model-specific parameters. Refer to the [model guide](https://docs.pinecone.io/guides/search/rerank-results#reranking-models) for available model parameters.
          type: object
          additionalProperties: true
      required:
      - model
      - documents
      - query
    SparseEmbedding:
      description: A sparse embedding of a single input
      type: object
      properties:
        sparse_values:
          example:
          - 0.1
          - 0.2
          - 0.3
          description: The sparse embedding values.
          type: array
          items:
            type: number
            format: float
        sparse_indices:
          example:
          - 10
          - 3
          - 156
          description: The sparse embedding indices.
          type: array
          items:
            type: integer
            format: int32
            minimum: 0
        sparse_tokens:
          example:
          - quick
          - brown
          - fox
          description: The normalized tokens used to create the sparse embedding.
          type: array
          items:
            type: string
        vector_type:
          $ref: '#/components/schemas/VectorType'
      required:
      - sparse_values
      - sparse_indices
      - vector_type
    RerankResult:
      description: The result of a reranking request.
      type: object
      properties:
        model:
          example: bge-reranker-v2-m3
          description: The model used to rerank documents.
          type: string
        data:
          description: The reranked documents.
          type: array
          items:
            $ref: '#/components/schemas/RankedDocument'
        usage:
          description: Usage statistics for the model inference.
          type: object
          properties:
            rerank_units:
              example: 1
              description: The number of rerank units consumed by this operation.
              type: integer
              format: int32
              minimum: 0
      required:
      - model
      - data
      - usage
    RankedDocument:
      description: A ranked document with a relevance score and an index position.
      type: object
      properties:
        index:
          description: The index position of the document from the original request.
          type: integer
        score:
          example: 0.5
          description: The relevance of the document to the query, normalized between 0 and 1, with scores closer to 1 indicating higher relevance.
          type: number
        document:
          $ref: '#/components/schemas/Document'
      required:
      - index
      - score
    EmbedRequest:
      type: object
      properties:
        model:
          example: multilingual-e5-large
          description: The [model](https://docs.pinecone.io/guides/index-data/create-an-index#embedding-models) to use for embedding generation.
          type: string
        parameters:
          example:
            input_type: passage
            truncate: END
          description: Additional model-specific parameters. Refer to the [model guide](https://docs.pinecone.io/guides/index-data/create-an-index#embedding-models) for available model parameters.
          type: object
          additionalProperties: true
        inputs:
          description: List of inputs to generate embeddings for.
          type: array
          items:
            type: object
            properties:
              text:
                example: The quick brown fox jumps over the lazy dog.
                type: string
      required:
      - model
      - inputs
    VectorType:
      description: Indicates whether this is a 'dense' or 'sparse' embedding.
      type: string
      enum:
      - dense
      - sparse
    DenseEmbedding:
      description: A dense embedding of a single input
      type: object
      properties:
        values:
          example:
          - 0.1
          - 0.2
          - 0.3
          description: The dense embedding values.
          type: array
          items:
            type: number
            format: float
        vector_type:
          $ref: '#/components/schemas/VectorType'
      required:
      - values
      - vector_type
    EmbeddingsList:
      description: Embeddings generated for the input.
      type: object
      properties:
        model:
          example: multilingual-e5-large
          description: The model used to generate the embeddings
          type: string
        vector_type:
          example: dense
          description: Indicates whether the response data contains 'dense' or 'sparse' embeddings.
          type: string
        data:
          description: The embeddings generated for the inputs.
          type: array
          items:
            $ref: '#/components/schemas/Embedding'
        usage:
          description: Usage statistics for the model inference.
          type: object
          properties:
            total_tokens:
              example: 205
              description: Total number of tokens consumed across all inputs.
              type: integer
              format: int32
              minimum: 0
      required:
      - model
      - vector_type
      - data
      - usage
    Document:
      example:
        id: '1'
        text: Paris is the capital of France.
        title: France
        url: https://example.com
      description: Document for reranking
      type: object
      additionalProperties: true
    ErrorResponse:
      example:
        error:
          code: QUOTA_EXCEEDED
          message: The index exceeds the project quota of 5 pods by 2 pods. Upgrade your account or change the project settings to increase the quota.
        status: 429
      description: The response shape used for all error responses.
      type: object
      properties:
        status:
          example: 500
          description: The HTTP status code of the error.
          type: integer
        error:
          example:
            code: INVALID_ARGUMENT
            message: Index name must contain only lowercase alphanumeric characters or hyphens, and must not begin or end with a hyphen.
          description: Detailed information about the error that occurred.
          type: object
          properties:
            code:
              type: string
              enum:
              - OK
              - UNKNOWN
              - INVALID_ARGUMENT
              - DEADLINE_EXCEEDED
              - QUOTA_EXCEEDED
              - NOT_FOUND
              - ALREADY_EXISTS
              - PERMISSION_DENIED
              - UNAUTHENTICATED
              - RESOURCE_EXHAUSTED
              - FAILED_PRECONDITION
              - ABORTED
              - OUT_OF_RANGE
              - UNIMPLEMENTED
              - INTERNAL
              - UNAVAILABLE
              - DATA_LOSS
              - FORBIDDEN
            message:
              example: Index name must contain only lowercase alphanumeric characters or hyphens, and must not begin or end with a hyphen.
              type: string
            details:
              description: Additional information about the error. This field is not guaranteed to be present.
              type: object
          required:
          - code
          - message
      required:
      - status
      - error
    Embedding:
      description: Embedding of a single input
      discriminator:
        propertyName: vector_type
        mapping:
          dense: '#/components/schemas/DenseEmbedding'
          sparse: '#/components/schemas/SparseEmbedding'
      type: object
      oneOf:
      - $ref: '#/components/schemas/DenseEmbedding'
      - $ref: '#/components/schemas/SparseEmbedding'
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Api-Key
      description: An API Key is required to call Pinecone APIs. Get yours from the [console](https://app.pinecone.io/).
security:
- ApiKeyAuth: []
tags:
- name: Inference
  description: Model inference
externalDocs:
  description: More Pinecone.io API docs
  url: https://docs.pinecone.io/introduction