> ## Documentation Index > Fetch the complete documentation index at: https://docs.errorbar.ai/llms.txt > Use this file to discover all available pages before exploring further. # Create a batch > Submit an asynchronous, discounted batch of inference requests from a previously uploaded JSONL file, for workloads that can wait up to the completion window. MONEY: the wallet must hold at least $0.10 of available runway to submit (402 otherwise); the batch discount and markup are frozen at submit time and the job is billed on completion. OWNER/ADMIN only (403). 400 when input_file_id/endpoint/model is missing or the body is not JSON. 503 when batch creation is temporarily unavailable upstream (the input file stays uploaded; retry later). 404 while the batch feature flag is off. ## OpenAPI ````yaml /openapi.json post /v1/batches openapi: 3.1.0 info: title: errorbar Management API description: >- The management API behind the improvement loop: capture and setup, request logs and datasets, grades (labels), judges (criteria), evals and deploy gates, fine-tuning and reinforcement learning, dedicated GPU endpoints, and model aliases and versions. Authenticated with a workspace API key (sk_sovereign_...). The inference API (chat, embeddings, rerank, responses) is OpenAI-compatible and documented separately. Responses are snake_case, list endpoints on the loop products use the {"object": "list", "data": [...]} envelope, and refusals use the same nested error shape the gateway emits: {"error": {"message", "type", "code"}}. Request bodies on the loop products (logs, labels, criteria, evals, datasets, aliases) are snake_case; the training and infrastructure products (fine-tuning, GRPO, environment tools, dedicated, model-version adoption) validate camelCase bodies, and each schema below says which it is. Endpoints that spend money require a key minted by a workspace owner or admin and return 403 otherwise. version: 1.0.0 servers: - url: https://gateway.errorbar.ai description: Production - url: https://www.errorbar.ai/api description: Control plane (also served at this base URL) security: - bearerAuth: [] paths: /v1/batches: post: tags: - Batches summary: Create a batch description: >- Submit an asynchronous, discounted batch of inference requests from a previously uploaded JSONL file, for workloads that can wait up to the completion window. MONEY: the wallet must hold at least $0.10 of available runway to submit (402 otherwise); the batch discount and markup are frozen at submit time and the job is billed on completion. OWNER/ADMIN only (403). 400 when input_file_id/endpoint/model is missing or the body is not JSON. 503 when batch creation is temporarily unavailable upstream (the input file stays uploaded; retry later). 404 while the batch feature flag is off. operationId: createBatch requestBody: required: true content: application/json: schema: type: object properties: input_file_id: type: string description: >- Id of a file uploaded via /v1/files with purpose "batch" containing the request JSONL. Must belong to this workspace (or be the input of one of its past batches); otherwise 404 "Input file not found". endpoint: type: string enum: - /v1/chat/completions - /v1/completions - /v1/embeddings description: The API route every line in the file targets. model: type: string description: >- A representative model id from the file; it is the billing-rate basis. Must have configured pricing or the call is refused with 400. completion_window: type: string description: How long the batch may take, e.g. "24h". required: - input_file_id - endpoint - model responses: '201': description: >- 201 with the batch object: { id, nebius_batch_id, endpoint, status, request_total, request_completed, request_failed, completion_window, billed_cost_usd, created_at, output_file_id, error_file_id, error } content: application/json: schema: type: object '400': $ref: '#/components/responses/BadRequest' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/InsufficientBalance' '403': $ref: '#/components/responses/Forbidden' components: responses: BadRequest: description: Malformed request or invalid field. content: application/json: schema: $ref: '#/components/schemas/Error' Unauthorized: description: Missing, malformed, or revoked API key. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: message: Invalid API key type: invalid_request_error code: invalid_api_key InsufficientBalance: description: Your wallet can't cover the required prepaid runway. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: message: >- Insufficient balance: deploying this endpoint requires at least 1h of runway. Top up and try again. type: insufficient_quota code: insufficient_balance Forbidden: description: The key lacks the required owner/admin permission. content: application/json: schema: $ref: '#/components/schemas/Error' schemas: Error: type: object properties: error: type: object properties: message: type: string type: type: string description: >- invalid_request_error, insufficient_quota, rate_limit_error, or api_error. code: type: string description: >- Machine-stable cause, e.g. invalid_api_key, not_found, insufficient_permissions, precondition_failed. required: - message - type - code description: >- Every refusal — gateway and management API alike — uses this one envelope. securitySchemes: bearerAuth: type: http scheme: bearer description: >- Your workspace API key, e.g. `sk_sovereign_...`, sent as `Authorization: Bearer `. ````