> ## Documentation Index > Fetch the complete documentation index at: https://docs.galtea.ai/llms.txt > Use this file to discover all available pages before exploring further. # Get the estimated cost per session of a product per day, week or month > The average, the 10th and 90th percentiles, the lowest and the highest estimated cost of the sessions with a cost, per UTC bucket of the period, over the sessions `GET /analytics/cost-overview` counts. Every bucket of the period is returned, and none when the product belongs to another organization than the caller's. Needs `analytics.read`, `product.read` and `evaluation.readInference` on the product, else 403. A product that does not exist answers 404. ## OpenAPI ````yaml https://api.galtea.ai/openapi.json get /analytics/session-cost-over-time openapi: 3.0.0 info: version: 1.0.0 title: Product Management Service API description: API documentation for Product Management Service contact: name: Galtea AI servers: - url: https://api.galtea.ai security: - bearerAuth: [] tags: [] externalDocs: description: Galtea Platform Documentation url: https://docs.galtea.ai paths: /analytics/session-cost-over-time: get: tags: - analytics summary: Get the estimated cost per session of a product per day, week or month description: >- The average, the 10th and 90th percentiles, the lowest and the highest estimated cost of the sessions with a cost, per UTC bucket of the period, over the sessions `GET /analytics/cost-overview` counts. Every bucket of the period is returned, and none when the product belongs to another organization than the caller's. Needs `analytics.read`, `product.read` and `evaluation.readInference` on the product, else 403. A product that does not exist answers 404. operationId: getSessionCostOverTime parameters: - schema: type: string description: The product to read required: true description: The product to read name: productId in: query - schema: type: string format: date-time description: Start of the period, inclusive (ISO 8601) required: true description: Start of the period, inclusive (ISO 8601) name: from in: query - schema: type: string format: date-time description: >- End of the period, exclusive (ISO 8601). A period that does not end after `from`, or is longer than 1830 days (5 years), is rejected with 400. required: true description: >- End of the period, exclusive (ISO 8601). A period that does not end after `from`, or is longer than 1830 days (5 years), is rejected with 400. name: to in: query - schema: type: boolean description: >- Count production sessions when true, development sessions when false. required: true description: >- Count production sessions when true, development sessions when false. name: isProduction in: query - schema: type: string description: >- The organization whose products to read. Defaults to the caller's own organization. Another organization reads products only for a caller that may read across organizations. required: false description: >- The organization whose products to read. Defaults to the caller's own organization. Another organization reads products only for a caller that may read across organizations. name: organizationId in: query - schema: type: string enum: - day - week - month description: >- The bucket size: a UTC calendar day, an ISO week (from Monday) or a calendar month example: week required: true description: >- The bucket size: a UTC calendar day, an ISO week (from Monday) or a calendar month name: interval in: query responses: '200': description: The session cost of the product per bucket content: application/json: schema: $ref: '#/components/schemas/SessionCostOverTime' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Product not found content: application/json: schema: $ref: '#/components/schemas/Error' security: - bearerAuth: [] components: schemas: SessionCostOverTime: type: object properties: interval: type: string enum: - day - week - month description: >- The bucket size: a UTC calendar day, an ISO week (from Monday) or a calendar month example: week buckets: type: array items: type: object properties: start: type: string format: date-time description: >- Start of the bucket, inclusive. The first bucket starts at `from`. end: type: string format: date-time description: End of the bucket, exclusive. The last bucket ends at `to`. sessionCount: type: integer description: The sessions of the bucket that have a cost avgCost: type: number nullable: true description: >- The average session cost, in USD. Null when no session of the bucket has a cost. p10Cost: type: number nullable: true description: >- The 10th percentile of the session costs, interpolated, in USD. Null when no session of the bucket has a cost. p90Cost: type: number nullable: true description: >- The 90th percentile of the session costs, interpolated, in USD. Null when no session of the bucket has a cost. minCost: type: number nullable: true description: >- The lowest session cost, in USD. Null when no session of the bucket has a cost. maxCost: type: number nullable: true description: >- The highest session cost, in USD. Null when no session of the bucket has a cost. required: - start - end - sessionCount - avgCost - p10Cost - p90Cost - minCost - maxCost description: >- Every bucket of the period in order. Empty when the product belongs to another organization. A session cost is the estimated cost summed over its turns; a session with no cost on any turn is left out. required: - interval - buckets Error: type: object properties: error: type: string example: Error type message: type: string example: Error message description securitySchemes: bearerAuth: type: http scheme: bearer description: >- API key authorization. Pass your API key in the Authorization header as a Bearer token. Both new (`gsk_*`) and legacy (`gsk-`) API keys are accepted, e.g. `Authorization: Bearer gsk_...` or `Authorization: Bearer gsk-...`. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.