> ## Documentation Index > Fetch the complete documentation index at: https://docs.kiteml.com/llms.txt > Use this file to discover all available pages before exploring further. # List Hardware Tiers > GPU tiers you can train on, with the token rate each one bills at. Tiers that are present but switched off are returned with ``available: false`` rather than hidden, so a client can tell "not a tier" from "not right now". ## OpenAPI ````yaml /api-reference/openapi.json get /v1/hardware_tiers openapi: 3.1.0 info: title: Kite Platform API description: >- Public API for Kite. Authenticate with `Authorization: Bearer kite_...`, and send `Kite-Version: 2026-09-27` to pin the dated contract your code was written against (without it you get 2026-09-27). Every response carries the version that served it. version: '2026-09-27' servers: - url: https://api.kiteml.com description: Kite Platform API security: - bearerAuth: [] tags: - name: Augmentations description: Generate new episodes from a LeRobot dataset. - name: Training runs description: Fine-tune a policy on a dataset, one run per policy. - name: Twins description: Rebuild a robot episode as an interactable MuJoCo scene (private beta). - name: Catalog description: Policies, hardware tiers, and dataset inspection. - name: Operations description: Poll any run by its id. - name: Webhooks description: Endpoints that receive events, and the event log. - name: API keys description: The key making the request. - name: Usage description: Token usage and credit balance. paths: /v1/hardware_tiers: get: tags: - Catalog summary: List Hardware Tiers description: >- GPU tiers you can train on, with the token rate each one bills at. Tiers that are present but switched off are returned with ``available: false`` rather than hidden, so a client can tell "not a tier" from "not right now". operationId: list_hardware_tiers_v1_hardware_tiers_get parameters: - $ref: '#/components/parameters/KiteVersion' responses: '200': description: Every tier, including those switched off content: application/json: schema: $ref: '#/components/schemas/HardwareTierList' '400': description: >- Invalid request (`parameter_invalid`, `unsupported_version`, ...); `param` names the field content: application/json: schema: $ref: '#/components/schemas/ApiErrorResponse' '401': description: Missing or invalid API key (`unauthenticated`) content: application/json: schema: $ref: '#/components/schemas/ApiErrorResponse' '403': description: >- The key lacks a scope this route needs (`missing_scope`), or the feature is not enabled for the account content: application/json: schema: $ref: '#/components/schemas/ApiErrorResponse' '429': description: >- Rate or concurrency limited (`rate_limit_exceeded`, `concurrency_limit_exceeded`, `capacity_exceeded`); honor `Retry-After` content: application/json: schema: $ref: '#/components/schemas/ApiErrorResponse' components: parameters: KiteVersion: name: Kite-Version in: header required: false description: >- The dated contract your code was written against. Without it you get 2026-09-27; every response says which version served it. schema: type: string enum: - '2026-09-27' default: '2026-09-27' schemas: HardwareTierList: properties: object: type: string enum: - list const: list title: Object data: items: $ref: '#/components/schemas/HardwareTier' type: array title: Data has_more: type: boolean title: Has More description: 'Always false: the catalog is one page' next_cursor: anyOf: - type: string - type: 'null' title: Next Cursor description: Always null type: object required: - object - data - has_more - next_cursor title: HardwareTierList ApiErrorResponse: properties: error: $ref: '#/components/schemas/ApiErrorBody' type: object required: - error title: ApiErrorResponse description: Every /v1 error has this shape. HardwareTier: properties: object: type: string enum: - hardware_tier const: hardware_tier title: Object id: type: string title: Id description: Pass it as `hardware_tier` to POST /v1/training_runs name: type: string title: Name description: type: string title: Description gpu_type: anyOf: - type: string - type: 'null' title: Gpu Type description: Null on a CPU tier gpu_count: type: integer title: Gpu Count cpu: type: string title: Cpu description: vCPUs of the machine a run trains on, e.g. `8` memory: type: string title: Memory description: Memory of that machine, e.g. `30Gi` available: type: boolean title: Available description: False for a tier that exists but is switched off for now tokens_per_hour: type: integer title: Tokens Per Hour description: What an hour on it costs, in tokens type: object required: - object - id - name - description - gpu_type - gpu_count - cpu - memory - available - tokens_per_hour title: HardwareTier description: A tier a training run can use. examples: - available: true cpu: '8' description: Fast gpu_count: 1 gpu_type: nvidia-tesla-t4 id: gcp_gpu_t4 memory: 30Gi name: NVIDIA T4 object: hardware_tier tokens_per_hour: 500 ApiErrorBody: properties: type: type: string title: Type description: >- invalid_request_error, authentication_error, permission_error, not_found_error, conflict_error, rate_limit_error, or api_error code: type: string title: Code description: 'Machine-readable: branch on this, not on the message' message: type: string title: Message param: anyOf: - type: string - type: 'null' title: Param description: The request field the error is about, when there is one request_id: anyOf: - type: string - type: 'null' title: Request Id description: Also in the X-Request-Id header; quote it to support details: anyOf: - type: object - type: 'null' title: Details description: >- Extra data for some codes (e.g. the cameras a dataset does have, for camera_not_found) type: object required: - type - code - message title: ApiErrorBody securitySchemes: bearerAuth: type: http scheme: bearer description: >- A Kite API key (`kite_...`), from **Platform API → Keys** in the dashboard. ````