How to Choose the Best Machine Learning API in 2026
There are 22 Machine Learning APIs in our directory. Of these, 2 require no authentication, making them ideal for quick prototyping. 2 are rated beginner-friendly.
Scores last tested: 2026-07-23
Quick Comparison: Top 10 Machine Learning APIs
Ranked by API Score. Measured means we called a real endpoint of that API; Est. means the score is derived from metadata because the endpoint could not be called without credentials. Discontinued APIs are excluded.
| Name | API Score | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|---|
| EXUDE-API | 92 A+ Est. | No Auth | ✓ | ✓ | Beginner |
| Deepcode | 87 A Est. | No Auth | ✓ | ? | Beginner |
| MessengerX.io | 87 A Est. | API Key | ✓ | ✓ | Intermediate |
| AI For Thai | 82 A Est. | API Key | ✓ | ✓ | Intermediate |
| Time Door | 82 A Est. | API Key | ✓ | ✓ | Intermediate |
| Cloudmersive | 77 B Est. | API Key | ✓ | ✓ | Intermediate |
| Dialogflow | 77 B Est. | API Key | ✓ | ? | Intermediate |
| Hirak FaceAPI | 77 B Est. | API Key | ✓ | ? | Intermediate |
| Inferdo | 77 B Est. | API Key | ✓ | ? | Intermediate |
| Irisnet | 77 B Est. | API Key | ✓ | ✓ | Intermediate |
Free Machine Learning APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
Deepcode
Deepcode (now part of Snyk) is an AI-powered static code analysis tool that automatically reviews code for bugs, security vulnerabilities, and quality issues.
EXUDE-API
⭐ Beginner's PickEXUDE-API is a free text-processing API that removes stop words and performs stemming to clean up raw text for natural language processing tasks.
Try It in 5 Minutes: Deepcode
Quick implementation example using Deepcode.
Using curl
curl -X GET "https://snyk.io/api/v1/test/npm/express/4.17.1" -H "Authorization: token YOUR_SNYK_TOKEN"
JavaScript
const url = "https://www.deepcode.ai/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Machine Learning APIs are available?
There are 22 Machine Learning APIs in our directory as of 2026.
Are there free Machine Learning APIs?
Yes, 2 Machine Learning APIs require no authentication and are completely free to use.
What is the easiest Machine Learning API to use?
Deepcode is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Machine Learning APIs?
It depends. 2 APIs need no authentication, 18 require an API key, and 1 use OAuth.