OpenAI API

openai · AI

AI No Auth Free & Open machine_learning Sandbox

APIs for sampling from and fine-tuning language models

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Returns a list of files that belong to the user's organization.

Returns a list of files that belong to the user's organization.

https://api.apis.guru/v2/specs/openai.com/1.2.0/files

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/openai.com/1.2.0/files"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/openai.com/1.2.0/files",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openai.com/1.2.0/files';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openai.com/1.2.0/files"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/openai.com/1.2.0/files")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/openai.com/1.2.0/files";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET List your organization's fine-tuning jobs

List your organization's fine-tuning jobs

https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/openai.com/1.2.0/fine-tunes";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Lists the currently available models, and provides basic information about each one such as the owner and availability.

Lists the currently available models, and provides basic information about each one such as the owner and availability.

https://api.apis.guru/v2/specs/openai.com/1.2.0/models

Hover any highlighted part to learn what it does

curl -X GET "https://api.apis.guru/v2/specs/openai.com/1.2.0/models"

import requests
response = requests.get(
    "https://api.apis.guru/v2/specs/openai.com/1.2.0/models",
)
print(response.json())

const url = 'https://api.apis.guru/v2/specs/openai.com/1.2.0/models';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://api.apis.guru/v2/specs/openai.com/1.2.0/models"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://api.apis.guru/v2/specs/openai.com/1.2.0/models")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://api.apis.guru/v2/specs/openai.com/1.2.0/models";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

See official documentation for authentication and setup.

What can you build with OpenAI API?

OpenAI API is a AI API. Developers commonly use ai APIs for:

adding natural language processing to your product
generating images, text, or code with AI models
building chatbots and virtual assistants
running sentiment analysis on customer feedback
powering recommendation and personalisation engines

No authentication required. This API is open — no signup or key needed. Ideal for quick prototypes and public-facing features. OpenAI API is free to use, making it a low-risk choice to experiment with.

New to APIs? Read our beginner's guide · Learn about API keys · What is REST?

Open documentation ↗