---
title: "Get experiment by id"
method: GET
path: "/v1/private/experiments/{id}"
tags: ["Experiments"]
---

# Get experiment by id

`GET /v1/private/experiments/{id}`

Get experiment by id

## Path parameters

- `id` string, uuid, required

## Response `200`

Experiment resource

- ExperimentPublic
  - `id` string, uuid
  - `dataset_name` string, nullable, required
  - `dataset_id` string, uuid
  - `project_id` string, uuid — Project ID. Takes precedence over project_name when both are provided.
  - `project_name` string — Project name. Creates project if it doesn't exist. Ignored when project_id is provided.
  - `name` string
  - `metadata` JsonListStringPublic
  - `tags` string[]
  - `type` 'regular' | 'trial' | 'mini-batch' | 'mutation'
  - `evaluation_method` 'dataset' | 'evaluation_suite'
  - `optimization_id` string, uuid
  - `feedback_scores` FeedbackScoreAveragePublic[]
    - `name` string, required
    - `value` number, required
  - `comments` CommentPublic[]
    - `id` string, uuid
    - `text` string, required
    - `source_queue_id` string, uuid
    - `created_at` string, date-time
    - `last_updated_at` string, date-time
    - `created_by` string
    - `last_updated_by` string
  - `trace_count` integer
  - `dataset_item_count` integer
  - `created_at` string, date-time
  - `duration` PercentageValuesPublic
    - `p50` number
    - `p90` number
    - `p99` number
  - `total_estimated_cost` number
  - `total_estimated_cost_avg` number
  - `usage` object
  - `last_updated_at` string, date-time
  - `created_by` string
  - `last_updated_by` string
  - `status` 'running' | 'completed' | 'cancelled'
  - `experiment_scores` ExperimentScorePublic[]
    - `name` string, required
    - `value` number, required
  - `prompt_version` PromptVersionLinkPublic
    - `prompt_version_id` string, uuid
    - `commit` string
    - `prompt_id` string, uuid
    - `prompt_name` string
  - `prompt_versions` PromptVersionLinkPublic[]
    - `prompt_version_id` string, uuid
    - `commit` string
    - `prompt_id` string, uuid
    - `prompt_name` string
  - `dataset_version_id` string, uuid — ID of the dataset version this experiment is linked to. If not provided at creation, experiment will be automatically linked to the latest version.
  - `dataset_version_summary` DatasetVersionSummaryPublic — Summary of the latest dataset version
    - `id` string, uuid — Unique identifier of the version
    - `version_hash` string — Hash of the version content
    - `version_name` string — Sequential version name formatted as 'v1', 'v2', etc.
    - `change_description` string — Description of changes in this version
    - `tags` string[] — Tags associated with this version
  - `pass_rate` number — Pass rate for test suite experiments (0.0-1.0). Null for regular experiments.
  - `passed_count` integer — Number of items that passed for test suite experiments. Null for regular experiments.
  - `total_count` integer — Total number of items for test suite experiments. Null for regular experiments.
  - `assertion_scores` AssertionScoreAveragePublic[] — Per-assertion average pass rates for test suite experiments. Null for regular experiments.
    - `name` string, required
    - `value` number, required

## Other responses

- `404` — Not found

---

[API](https://skmtc.net/comet-ml/apis/opik-rest-api.md) · [All operations](https://skmtc.net/comet-ml/apis/opik-rest-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/comet-ml/opik-rest-api/versions/4ed2fbc97cc3/schema)