> ## Documentation Index > Fetch the complete documentation index at: https://docs.summerengine.com/llms.txt > Use this file to discover all available pages before exploring further. # List models > Every Summer API model with its id, input schema, output formats, typical time and price. Public, no sign-in. ## OpenAPI ````yaml scripts/api/sources/openapi.json GET /models openapi: 3.1.0 info: title: Summer API version: '1' description: >- Curated, tested game-dev models: 3D, images, video, voice, sound and music, into your Summer assets. servers: - url: https://www.summerengine.com/v1 security: - bearer: [] paths: /models: get: summary: List Summer API models description: >- List the curated models: id, capability, input schema, output formats, typical time and price. Public; no sign-in. operationId: models_list parameters: - name: capability in: query required: false schema: description: 'Only this kind: image, 3d, video, voice, dialogue, sound or music.' type: string enum: - image - 3d - video - voice - dialogue - sound - music - motion responses: '200': description: Done. content: application/json: schema: type: object properties: currency: type: string const: USD topUpFeePercent: description: >- Added to pay-as-you-go credit purchases; model prices carry no other fee. type: number aliases: description: Each /default alias and the model id it runs. type: object additionalProperties: type: string models: type: array items: type: object properties: id: type: string datedId: description: >- The same model, dated: shows which price check it follows. type: string capability: type: string enum: - image - 3d - video - voice - dialogue - sound - music - motion name: type: string vendor: type: string tags: type: array items: type: string aliases: description: >- The /default aliases that run this model. type: array items: type: string outputFormats: type: array items: type: string latency: description: Typical seconds from start to result. anyOf: - type: object properties: p50Seconds: type: number p90Seconds: anyOf: - type: number - type: 'null' measured: type: boolean required: - p50Seconds - p90Seconds - measured additionalProperties: false - type: 'null' tier: description: >- free: in Studio, welcome credits may pay for it. The Summer API always uses paid credits. type: string enum: - free - pro commercialUse: type: boolean wellTested: description: Summer's own surfaces run it by default. type: boolean price: type: object properties: unit: type: string enum: - call - output_second - 1k_characters - megapixel price: description: For one unit, at the defaults. type: string pattern: ^\d+(\.\d+)?$ quantityField: description: >- The request field that counts the units (numImages, duration, text). Absent: one unit. type: string minimum: description: US dollars as a decimal string. type: string pattern: ^\d+(\.\d+)?$ estimate: description: >- A typical request; models.estimate prices the exact one. type: boolean const: true modifiers: type: array items: type: object properties: field: description: The request field in input. type: string equals: anyOf: - type: string - type: number - type: boolean set: description: Applies when the field is given at all. type: boolean const: true price: description: Replaces the unit price. type: string pattern: ^\d+(\.\d+)?$ add: description: Adds to the unit price. type: string pattern: ^\d+(\.\d+)?$ required: - field additionalProperties: false priceUpdatedAt: description: When the price was last checked, YYYY-MM-DD. type: string required: - unit - price - modifiers - priceUpdatedAt additionalProperties: false inputSchema: description: >- JSON Schema of input for models.run and models.estimate. type: object additionalProperties: {} voices: description: >- Voice and dialogue models: the curated voiceId values; voices.search finds the rest. type: array items: type: object properties: voiceId: type: string name: type: string required: - voiceId - name additionalProperties: false required: - id - datedId - capability - name - vendor - tags - aliases - outputFormats - latency - tier - commercialUse - wellTested - price - inputSchema additionalProperties: false required: - currency - topUpFeePercent - aliases - models additionalProperties: false default: description: An error. content: application/json: schema: $ref: '#/components/schemas/Error' security: [] components: schemas: Error: type: object required: - error properties: error: type: object required: - type - code - message - param - request_id - doc_url properties: type: type: string code: type: string description: >- A stable code: invalid_input, not_signed_in, no_credits (the paid balance), over_limit (the app's own spend limit), ... message: type: string param: type: - string - 'null' description: The field to fix, such as input.prompt or Idempotency-Key. request_id: type: string doc_url: type: string fix_url: type: string description: Where the person fixes it, such as adding credits. securitySchemes: bearer: type: http scheme: bearer bearerFormat: JWT description: >- A Summer sign-in: an OAuth 2.1 access token, valid one hour. Sign in once with npx -y summer-engine login, then print a token with summer token. Each app you sign in spends your paid credits up to the limit you set in Connected apps. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.