---
title: "Get AI Config metrics by variation"
method: GET
path: "/api/v2/projects/{projectKey}/ai-configs/{configKey}/metrics-by-variation"
tags: ["AI Configs"]
---

# Get AI Config metrics by variation

`GET /api/v2/projects/{projectKey}/ai-configs/{configKey}/metrics-by-variation`

Retrieve usage metrics for an AI Config by config key, with results split by variation.

## Path parameters

- `projectKey` string, required
- `configKey` string, required

## Query parameters

- `from` integer, required
- `to` integer, required
- `env` string, required

## Response `200`

Metrics computed

- MetricByVariation[]
  - `variationKey` string
  - `metrics` Metrics
    - `inputTokens` integer
    - `outputTokens` integer
    - `totalTokens` integer
    - `generationCount` integer — Number of attempted generations
    - `generationSuccessCount` integer — Number of successful generations
    - `generationErrorCount` integer — Number of generations with errors
    - `thumbsUp` integer
    - `thumbsDown` integer
    - `durationMs` integer
    - `timeToFirstTokenMs` integer
    - `satisfactionRating` number, float — A value between 0 and 1 representing satisfaction rating
    - `inputCost` number, double — Cost of input tokens in USD
    - `outputCost` number, double — Cost of output tokens in USD
    - `judgeAccuracy` number, float — Average accuracy judge score (0.0-1.0)
    - `judgeRelevance` number, float — Average relevance judge score (0.0-1.0)
    - `judgeToxicity` number, float — Average toxicity judge score (0.0-1.0)

## Other responses

- `400` — Bad request
- `403` — Forbidden
- `404` — Not found
- `500` — Internal server error

## Changes

- **2026-02-28** `69c5c9aafe78` — 1 warning, 5 info
  - deleted the `header` request parameter `LD-API-Version`
  - api tag `AI Configs` added
  - api tag `AI Configs (beta)` removed
  - added the optional property `items/metrics/judgeAccuracy` to the response with the `200` status
  - …2 more

[Change history](https://skmtc.dev/launchdarkly/apis/launchdarkly-rest-api/changes/api/v2/projects/:projectKey/ai-configs/:configKey/metrics-by-variation/get.md)

---

[API](https://skmtc.dev/launchdarkly/apis/launchdarkly-rest-api.md) · [All operations](https://skmtc.dev/launchdarkly/apis/launchdarkly-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/launchdarkly/launchdarkly-rest-api/revisions/69c5c9aafe78/schema)