---
title: "Estimate multi-provider comparison cost"
method: POST
path: "/v1/capabilities/{capability_key}/comparisons/estimate"
tags: ["public_api", "external", "comparisons"]
---

# Estimate multi-provider comparison cost

`POST /v1/capabilities/{capability_key}/comparisons/estimate`

## Request

- Base URL: `https://api.hydracept.com`
- URL: `https://api.hydracept.com/v1/capabilities/{capability_key}/comparisons/estimate`
- Auth: HTTP bearer

Estimates the cost of running the same input across multiple provider options. This is not the retail capability quote (POST /quote). Do not send any id from this response as execution.quoteId.

## Path parameters

- `capability_key` string, required

## Request body

- ComparisonEstimateRequest
  - `input` object
  - `competitors` union[], required
    - union
      - ProviderCompetitorSpec
        - `axis` 'provider'
        - `providerPin` string, required
      - RecipeCompetitorSpec
        - `axis` 'recipe'
        - `label` string, nullable
        - `inputOverrides` object
      - ProfileCompetitorSpec
        - `axis` 'profile'
        - `profileKey` string, required
        - `profileVersion` string, nullable

## Response `200`

Successful Response

- object

## Other responses

- `400`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `401`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `402`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `403`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `404`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `422`: Validation failure: public envelope plus Pydantic `detail` / `validationErrors`
- `429`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `500`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `502`: Structured public error envelope (`code`, `message`, `requestId`, …)
- `503`: Structured public error envelope (`code`, `message`, `requestId`, …)

---

[API](https://skmtc.dev/hydracept/apis/hydracept-public-api.md) · [All operations](https://skmtc.dev/hydracept/apis/hydracept-public-api/llms.txt) · [OpenAPI document](https://skmtc.dev/hydracept/apis/hydracept-public-api/revisions/2d41a8069ede?raw)