Get an experiment

curl --request GET \
  --url https://api.arize.com/v2/experiments/{experiment_id} \
  --header 'Authorization: Bearer <token>'

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.arize.com/v2/experiments/{experiment_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.arize.com/v2/experiments/{experiment_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.arize.com/v2/experiments/{experiment_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.arize.com/v2/experiments/{experiment_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

{
  "id": "RXhwZXJpbWVudDoxOmFCY0Q=",
  "space_id": "U3BhY2U6MTphQmNE",
  "name": "Experiment 1",
  "dataset_id": "RGF0YXNldDoxOmFCY0Q=",
  "dataset_version_id": "RGF0YXNldFZlcnNpb246MTphQmNE",
  "created_at": "2024-01-01T12:00:00Z",
  "updated_at": "2024-01-02T12:00:00Z",
  "integration_id": null
}

{
  "status": 400,
  "title": "Invalid request parameters",
  "detail": "The 'name' field is required and must be a non-empty string.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#invalid-request"
}

{
  "status": 401,
  "title": "Authentication required",
  "detail": "You must be authenticated to access this resource.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#authentication-required"
}

{
  "status": 404,
  "title": "Resource not found",
  "detail": "The requested resource with ID '12345' was not found.",
  "instance": "/resource/12345",
  "type": "https://arize.com/docs/ax/rest-reference/errors#resource-not-found"
}

{
  "status": 429,
  "title": "Rate limit exceeded",
  "detail": "You have exceeded the allowed number of requests. Please try again later.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#rate-limit-exceeded"
}

GET

experiments

{experiment_id}

Get an experiment

curl --request GET \
  --url https://api.arize.com/v2/experiments/{experiment_id} \
  --header 'Authorization: Bearer <token>'

const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.arize.com/v2/experiments/{experiment_id}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.arize.com/v2/experiments/{experiment_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.arize.com/v2/experiments/{experiment_id}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("Authorization", "Bearer <token>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

require 'uri'
require 'net/http'

url = URI("https://api.arize.com/v2/experiments/{experiment_id}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

response = http.request(request)
puts response.read_body

{
  "id": "RXhwZXJpbWVudDoxOmFCY0Q=",
  "space_id": "U3BhY2U6MTphQmNE",
  "name": "Experiment 1",
  "dataset_id": "RGF0YXNldDoxOmFCY0Q=",
  "dataset_version_id": "RGF0YXNldFZlcnNpb246MTphQmNE",
  "created_at": "2024-01-01T12:00:00Z",
  "updated_at": "2024-01-02T12:00:00Z",
  "integration_id": null
}

{
  "status": 400,
  "title": "Invalid request parameters",
  "detail": "The 'name' field is required and must be a non-empty string.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#invalid-request"
}

{
  "status": 401,
  "title": "Authentication required",
  "detail": "You must be authenticated to access this resource.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#authentication-required"
}

{
  "status": 404,
  "title": "Resource not found",
  "detail": "The requested resource with ID '12345' was not found.",
  "instance": "/resource/12345",
  "type": "https://arize.com/docs/ax/rest-reference/errors#resource-not-found"
}

{
  "status": 429,
  "title": "Rate limit exceeded",
  "detail": "You have exceeded the allowed number of requests. Please try again later.",
  "instance": "/resource",
  "type": "https://arize.com/docs/ax/rest-reference/errors#rate-limit-exceeded"
}

Authorizations

Authorization

string

header

required

Most Arize AI endpoints require authentication. For those endpoints that require authentication, include your API key in the request header using the format

Path Parameters

experiment_id

string

required

The unique experiment identifier (base64) A universally unique identifier (base64-encoded opaque string).

Example:

"RW50aXR5OjEyMzQ1"

Response

An experiment object

Experiments combine a dataset (example inputs/expected outputs), a task (the function that produces model outputs), and one or more evaluators (code or LLM judges) to measure performance. Each run is stored independently so you can compare runs, track progress, and validate improvements over time. See the full definition on the Experiments page.

Use an experiment to run tasks on a dataset, attach evaluators to score outputs, and compare runs to confirm improvements.

string

required

Unique identifier for the experiment

name

string

required

Name of the experiment

space_id

string

required

Unique identifier for the space this experiment belongs to

created_at

string<date-time>

required

Timestamp for when the experiment was created

updated_at

string<date-time>

required

Timestamp for the last update of the experiment

dataset_id

string | null

Unique identifier for the dataset associated with this experiment. Null if the experiment isn't associated with a dataset.

dataset_version_id

string | null

Unique identifier for the dataset version associated with this experiment. Null if the experiment isn't associated with a dataset.

experiment_traces_project_id

string

Unique identifier for the experiment traces project this experiment belongs to (if it exists)

integration_id

string | null

Identifier (base64) of the agent integration that backs this experiment, as returned by the integrations API. Null for non-agent experiments (for example, SDK or Playground experiments).

Skills

API reference

API clients

Get an experiment

Authorizations

Path Parameters

Response