> ## Documentation Index > Fetch the complete documentation index at: https://docs.mixpeek.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Estimate Batch Cost (pre-flight, dry-run) > Pre-flight estimate of the credits a DRAFT batch will consume on submit, plus how many of its objects were already extracted — so a force/replace re-run that re-pays GPU extraction surfaces its cost BEFORE submitting. Does not consume credits or change the batch's contents/status; it DOES refresh a DRAFT batch's activity timestamp so the draft-TTL reaper grants a fresh grace window while you confirm the cost. ## OpenAPI ````yaml post /v1/buckets/{bucket_identifier}/batches/{batch_id}/estimate-cost openapi: 3.1.0 info: title: Mixpeek API description: >- This is the Mixpeek API, providing access to various endpoints for data processing and retrieval. termsOfService: https://mixpeek.com/terms contact: name: Mixpeek Support url: https://mixpeek.com/contact email: info@mixpeek.com version: '0.82' servers: - url: https://api.mixpeek.com description: Production security: - BearerAuth: [] paths: /v1/buckets/{bucket_identifier}/batches/{batch_id}/estimate-cost: post: tags: - Bucket Batches summary: Estimate Batch Cost (pre-flight, dry-run) description: >- Pre-flight estimate of the credits a DRAFT batch will consume on submit, plus how many of its objects were already extracted — so a force/replace re-run that re-pays GPU extraction surfaces its cost BEFORE submitting. Does not consume credits or change the batch's contents/status; it DOES refresh a DRAFT batch's activity timestamp so the draft-TTL reaper grants a fresh grace window while you confirm the cost. operationId: >- estimate_batch_cost_endpoint_v1_buckets__bucket_identifier__batches__batch_id__estimate_cost_post parameters: - name: bucket_identifier in: path required: true schema: type: string description: The unique identifier of the bucket. title: Bucket Identifier description: The unique identifier of the bucket. - name: batch_id in: path required: true schema: type: string description: The unique identifier of the batch. title: Batch Id description: The unique identifier of the batch. responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/BatchCostEstimate' '400': description: Bad Request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Not Found content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - BearerAuth: [] NamespaceHeader: [] components: schemas: BatchCostEstimate: properties: batch_id: type: string title: Batch Id collection_ids: items: type: string type: array title: Collection Ids dedup_strategy: type: string title: Dedup Strategy description: skip | replace | force — controls re-extraction default: skip object_count: type: integer title: Object Count description: Objects this batch will process default: 0 already_extracted_count: type: integer title: Already Extracted Count description: >- Objects in this batch already extracted before (re-paid under force/replace) default: 0 estimated_credits: type: integer title: Estimated Credits description: Credits submitting this batch will consume (same calc as submit) default: 0 estimated_usd: anyOf: - type: number - type: 'null' title: Estimated Usd description: >- Dollar cost of this batch under live v2 pricing (file type × amount × search-by features). Credits are milli-dollars of this value. estimated_repay_credits: type: integer title: Estimated Repay Credits description: >- ~credits re-paying already-extracted objects (force/replace only; linear approx) default: 0 features: items: type: string type: array title: Features description: >- What this batch searches by (dimension 3 of pricing): feature keys billed per file type; custom plugins as 'custom:'. extractors: items: type: string type: array title: Extractors description: >- Internal implementation of `features` — prefer rendering `features`; extractor names are the deeper disclosure layer. content_summary: anyOf: - additionalProperties: true type: object - type: 'null' title: Content Summary description: >- Dimensions 1+2 of pricing: file types and how much of each (counts, video minutes, pages, tokens…) warnings: items: type: string type: array title: Warnings type: object required: - batch_id title: BatchCostEstimate description: Dry-run estimate of what submitting a DRAFT batch will cost + re-pay. ErrorResponse: properties: success: type: boolean title: Success description: Always false for error responses default: false status: type: integer title: Status description: HTTP status code for this error error: $ref: '#/components/schemas/ErrorDetail' description: Error details payload type: object required: - status - error title: ErrorResponse description: Error response model. examples: - error: details: id: ns_123 resource: namespace message: Namespace not found type: NotFoundError status: 404 success: false HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ErrorDetail: properties: message: type: string title: Message description: Human-readable error message type: type: string title: Type description: Stable error type identifier (machine-readable) code: anyOf: - type: string - type: 'null' title: Code description: >- Fine-grained error code for programmatic handling (e.g., namespace_name_taken, feature_extractor_not_found). Present only when consumers may need to branch on a specific error condition. details: anyOf: - additionalProperties: true type: object - type: 'null' title: Details description: >- Optional structured details to help debugging (validation errors, IDs, etc.) type: object required: - message - type title: ErrorDetail description: Error detail model. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError securitySchemes: BearerAuth: type: http scheme: bearer description: >- Mixpeek API key, sent as `Authorization: Bearer mxp_sk_...`. Create one in Studio under Settings → API Keys, or with an admin key via `POST /v1/organizations/users/{user_email}/api-keys`. A missing header returns 403; an invalid or revoked key returns 401. NamespaceHeader: type: apiKey in: header name: X-Namespace description: >- Namespace id (`ns_...`), not the namespace name. This scopes the request rather than authenticating it, and it is required on every operation marked `x-mixpeek-namespace-scoped`. ````