> ## Documentation Index > Fetch the complete documentation index at: https://docs.trajectory.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get evaluation options > Retrieve evaluation models and their supported shared RunOptions settings, bounds, and fixed or computed defaults. Filter by base_model_slug for one model. ## OpenAPI ````yaml /openapi.json get /api/v1/eval/options openapi: 3.1.0 info: title: Trajectory API version: 0.1.0 x-trajectory-api-version: '2026-10-14' description: >- This contract is API version 2026-10-14. The optional Trajectory-API-Version header pins it, and tmp-contract is accepted as an alias. Requests without the header get this version. Version 2026-10-07 and the pre-launch legacy response formats are retired. servers: - url: https://api.trajectory.ai security: [] tags: - name: agents x-group: Agents - name: benchmarks x-group: Specs (benchmarks) - name: diagnostics x-group: Diagnostics - name: benchmark-ingestion x-group: Spec (benchmark) submissions - name: eval x-group: Evaluations - name: training x-group: Training - name: deployments x-group: Deployments - name: model-endpoints x-group: Model endpoints - name: inference x-group: Inference - name: trajectories x-group: Trajectories - name: artifacts x-group: Artifacts - name: telemetry x-group: Telemetry - name: supported-models x-group: Supported models - name: organizations x-group: Organizations - name: secrets x-group: Secrets paths: /api/v1/eval/options: get: tags: - eval summary: Get evaluation options description: >- Retrieve evaluation models and their supported shared RunOptions settings, bounds, and fixed or computed defaults. Filter by base_model_slug for one model. operationId: getEvalOptions parameters: - name: bench_id in: query required: false schema: anyOf: - type: string - type: 'null' description: >- Deprecated and ignored; run options are the same for every benchmark. deprecated: true title: Bench Id description: >- Deprecated and ignored; run options are the same for every benchmark. deprecated: true - name: base_model_slug in: query required: false schema: anyOf: - $ref: '#/components/schemas/BaseModelSlug' - type: 'null' title: Base Model Slug responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/RunOptionsResponse' default: $ref: '#/components/responses/ApiErrorResponse' security: - ApiKeyAuth: [] components: schemas: BaseModelSlug: type: string enum: - thinkingmachines/Inkling-Small - Qwen/Qwen3.5-4B - Qwen/Qwen3.5-397B-A17B - Qwen/Qwen3.6-35B-A3B - Qwen/Qwen3.8-27B - nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16 - nvidia/NVIDIA-Nemotron-3-Super-120B-A12B-BF16 - nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 - nvidia/NVIDIA-Nemotron-3.5-Super-120B-A12B-BF16 - openai/gpt-6.1-sol - openai/gpt-6-sol - openai/gpt-6-astra - openai/gpt-5.6-sol - openai/gpt-5.6-luna - anthropic/claude-opus-5.5 - anthropic/claude-sonnet-5.5 - openai/gpt-5-mini - openai/gpt-5.4-mini - openai/gpt-5.5 - anthropic/claude-sonnet-4.6 - google/gemini-3.1-pro-preview - z-ai/glm-5.3 - z-ai/glm-5.3-flash - moonshotai/kimi-k3 title: BaseModelSlug RunOptionsResponse: properties: bench_id: type: string title: Bench Id description: >- Deprecated and always empty; run options are the same for every benchmark. default: '' deprecated: true models: items: $ref: '#/components/schemas/ModelRunOptions' type: array title: Models type: object required: - bench_id - models title: RunOptionsResponse ModelRunOptions: properties: base_model_slug: $ref: '#/components/schemas/BaseModelSlug' options: additionalProperties: $ref: '#/components/schemas/RunOptionMetadata' propertyNames: $ref: '#/components/schemas/TrainingOptionKey' type: object title: Options type: object required: - base_model_slug - options title: ModelRunOptions ApiErrorEnvelope: properties: error: $ref: '#/components/schemas/ApiErrorBody' required: - error title: ApiErrorEnvelope type: object RunOptionMetadata: properties: type: type: string enum: - integer - number - boolean - string title: Type min: anyOf: - type: number - type: 'null' title: Min max: anyOf: - type: number - type: 'null' title: Max default: anyOf: - type: boolean - type: number - type: string - type: 'null' title: Default choices: anyOf: - items: type: string type: array - type: 'null' title: Choices default_kind: type: string enum: - fixed - computed title: Default Kind description: type: string title: Description type: object required: - type - default - default_kind - description title: RunOptionMetadata ApiErrorBody: properties: type: $ref: '#/components/schemas/ErrorType' code: type: string title: Code message: type: string title: Message param: anyOf: - type: string - type: 'null' default: null title: Param doc_url: type: string title: Doc Url context: additionalProperties: true title: Context type: object required: - type - code - message - doc_url - context title: ApiErrorBody type: object ErrorType: enum: - invalid_request_error - authentication_error - permission_error - conflict_error - billing_error - rate_limit_error - dependency_error - api_error title: ErrorType type: string responses: ApiErrorResponse: description: >- Common API error. Possible codes: `authentication_required`, `permission_denied`, `validation_error`, `rate_limited`, `internal_error`, `service_unavailable`. headers: X-Request-ID: $ref: '#/components/headers/RequestId' Trajectory-Should-Retry: $ref: '#/components/headers/TrajectoryShouldRetry' Retry-After: $ref: '#/components/headers/RetryAfter' content: application/json: schema: $ref: '#/components/schemas/ApiErrorEnvelope' headers: RequestId: schema: type: string TrajectoryShouldRetry: schema: type: boolean RetryAfter: schema: type: string securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: Organization API key ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.