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OpenAPI Specification

openapi: 3.2.0
info:
  title: xAI's REST Language Models API
  description: REST API for xAI compatible with other providers.
  license:
    name: ''
  version: 1.0.0
tags:
- name: Language Models
paths:
  /v1/language-models:
    get:
      tags:
      - Language Models
      summary: List all chat and image understanding models available to the authenticating…
      operationId: handle_language_models_list_request
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListLanguageModelsResponse'
              example:
                models:
                - id: grok-3
                  fingerprint: fp_898ae9f31c
                  created: 1743724800
                  object: model
                  owned_by: xai
                  version: '1.0'
                  input_modalities:
                  - text
                  output_modalities:
                  - text
                  prompt_text_token_price: 30000
                  cached_prompt_text_token_price: 7500
                  prompt_image_token_price: 0
                  completion_text_token_price: 150000
                  search_price: 250000000
                  aliases:
                  - grok-3-latest
                  - grok-3-beta
                - id: grok-3-mini
                  fingerprint: fp_6a09108ff5
                  created: 1743724800
                  object: model
                  owned_by: xai
                  version: '1.0'
                  input_modalities:
                  - text
                  output_modalities:
                  - text
                  prompt_text_token_price: 3000
                  cached_prompt_text_token_price: 750
                  prompt_image_token_price: 0
                  completion_text_token_price: 5000
                  search_price: 250000000
                  aliases:
                  - grok-3-mini-latest
                  - grok-3-mini-beta
                - id: grok-2-vision-1212
                  fingerprint: fp_daba7546e5
                  created: 1733961600
                  object: model
                  owned_by: xai
                  version: 0.1.0
                  input_modalities:
                  - text
                  - image
                  output_modalities:
                  - text
                  prompt_text_token_price: 20000
                  prompt_image_token_price: 20000
                  completion_text_token_price: 100000
                  aliases: []
        '400':
          description: Bad request. The request is invalid or an invalid API key is provided.
      security:
      - bearerAuth: []
  /v1/language-models/{model_id}:
    get:
      tags:
      - Language Models
      summary: Get full information about a chat or image understanding model with its model_id
      operationId: handle_language_model_get_request
      parameters:
      - name: model_id
        in: path
        description: ID of the model to get.
        required: true
        schema:
          type: string
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LanguageModel'
              example:
                id: latest
                fingerprint: fp_156d35dcaa
                created: 1743724800
                object: model
                owned_by: xai
                version: 1.0.0
                input_modalities:
                - text
                output_modalities:
                - text
                prompt_text_token_price: 20000
                cached_prompt_text_token_price: 0
                prompt_image_token_price: 0
                completion_text_token_price: 100000
                aliases:
                - grok-4
                - grok-4-latest
        '400':
          description: Bad request. The request is invalid or an invalid API key is provided.
        '404':
          description: Model not found
      security:
      - bearerAuth: []
components:
  schemas:
    LanguageModel:
      type: object
      description: Details of a language model
      required:
      - id
      - fingerprint
      - created
      - object
      - owned_by
      - version
      - input_modalities
      - output_modalities
      - prompt_text_token_price
      - cached_prompt_text_token_price
      - prompt_image_token_price
      - completion_text_token_price
      - search_price
      - aliases
      properties:
        aliases:
          type: array
          items:
            type: string
          description: Alias ID(s) of the model that user can use in a request's model field.
        cached_prompt_text_token_price:
          type: integer
          format: int64
          description: Price of a prompt text token (in USD cents per 100 million tokens) that was cached previously.
        completion_text_token_price:
          type: integer
          format: int64
          description: Price of the completion text token in USD cents per 100 million token.
        created:
          type: integer
          format: int64
          description: Creation time of the model in Unix timestamp.
        fingerprint:
          type: string
          description: Fingerprint of the xAI system configuration hosting the model.
        id:
          type: string
          description: Model ID. Obtainable from <https://console.x.ai/team/default/models> or <https://docs.x.ai/docs/models>.
        input_modalities:
          type: array
          items:
            type: string
          description: The input modalities supported by the model, e.g. `"text"`, `"image"`.
        object:
          type: string
          description: The object type, which is always `"model"`.
        output_modalities:
          type: array
          items:
            type: string
          description: The output modalities supported by the model, e.g. `"text"`, `"image"`.
        owned_by:
          type: string
          description: Owner of the model.
        prompt_image_token_price:
          type: integer
          format: int64
          description: Price of the prompt image token in USD cents per 100 million token.
        prompt_text_token_price:
          type: integer
          format: int64
          description: Price of the prompt text token in USD cents per 100 million token.
        search_price:
          type: integer
          format: int64
          description: Price of the search in USD cents per 100 million searches.
        version:
          type: string
          description: Version of the model.
    ListLanguageModelsResponse:
      type: object
      required:
      - models
      properties:
        models:
          type: array
          items:
            $ref: '#/components/schemas/LanguageModel'
          description: Array of available language models.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer