Hackerearth API alternatives
For compiling and running code in several languages. If it doesn't fit your project, here are the 4 best free Programming APIs to use instead in 2026, out of 4 in the directory.
For reference, Hackerearth API: HTTPS.
- 1
Judge0 CE API
Online · 596 msOnline code execution system. A free programming API by Judge0 CE.
- HTTPS
apiKeyHTTPSCORS ? - 2
Mintlify API
Online · 1227 msFor programmatically generating documentation for code.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 3
- 4
KONTESTS API
Last check failedFor upcoming and ongoing competitive coding contests.
- No API key needed
- HTTPS
No authHTTPSCORS ?
Hackerearth API vs alternatives
| API | API key | HTTPS | CORS | Uptime | Response | Rating |
|---|---|---|---|---|---|---|
| Hackerearth | Required | Yes | Unknown | Up | 1521 ms | Not rated |
| Required | Yes | Unknown | Up | 596 ms | Not rated | |
| Required | Yes | Yes | Up | 1227 ms | Not rated | |
| Required | Yes | Unknown | Up | 479 ms | Not rated | |
| KONTESTS | No | Yes | Unknown | Down | – | Not rated |
Head-to-head comparisons
See also: best Programming APIs · all Programming APIs
Hackerearth API alternatives FAQ
What is the best free alternative to the Hackerearth API in 2026?
The top-ranked free alternatives to the Hackerearth API are Judge0 CE API, Mintlify API and Codeforces API, all in the Programming category. Rankings combine access (API key, HTTPS, CORS), daily uptime checks and developer ratings.
Is there a Hackerearth API alternative that doesn't need an API key?
Yes: KONTESTS API work without an API key, unlike the Hackerearth API, which uses apiKey authentication.
Is there a Hackerearth API alternative I can call from the browser?
Mintlify API support CORS, so front-end JavaScript can call them directly.
How many Programming APIs are similar to the Hackerearth API?
The directory lists 4 other free Programming APIs. This page compares the top ones side by side.