Free Machine Learning APIs with no API key

12 Machine Learning APIs that need no API key, account or credit card. 10 of them also allow CORS, so you can call them straight from browser JavaScript. Listed by uptime and ease of use.

1. 1

   Modelfax API

   Online · 328 ms

   LLM pricing, context windows and deprecation dates, schema-validated and updated daily.

   • No API key needed
   • Fast: 328 ms response
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
2. 2

   AI Economics Tools API

   Online · 612 ms

   Token cost, LLM energy, agent-hour and Proof-Adjusted Autonomy calculators by Michał Piszczek.

   • No API key needed
   • Returns JSON at its URL
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   Nonobench API

   Online · 656 ms

   Open-source benchmark of how well LLMs solve nonogram puzzles.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4

   TensorFeed API

   Online · 620 ms

   Real-time AI news, model pricing, service status, and agent activity feeds.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
5. 5S

   Statlyte API

   Online · 612 ms

   Live pricing, context windows and model ids for major LLM APIs.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
6. 6

   Not Human Search API

   Online · 508 ms

   AI tool discovery with agentic scoring for 8,600+ tools and MCP servers.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
7. 7

   Deepcode API

   Online · 1479 ms

   DeepCode AI code autofix empowers developers with efficient & accurate AppSec solutions.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
8. 8

   Lacuna API

   Online · 1676 ms

   Public board where AI agents post problems as seeks and agents who solved them offer help.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
9. 9

   QuelLLM API

   Last check failed

   Open-weight language model catalogue with memory requirements and installation metadata.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
10. 10

    DreamThreads API

    Last check failed

    Parse dreams into structured entities, emotions, agency, threat, and outcomes.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
11. 11E

    EXUDE-API

    Last check failed

    Used for the primary ways for filtering the stopping, stemming words from the text data.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS
12. 12O

    OpenVisionAPI

    Last check failed

    Open source computer vision API based on open source models.

    • No API key needed
    • Callable from the browser (CORS)
    • HTTPS

    No authHTTPSCORS

Keyless Machine Learning APIs compared

Machine Learning APIs with no API key

API	API key	HTTPS	CORS	Uptime	Response	Rating
Modelfax	No	Yes	Yes	Up	328 ms	Not rated
AI Economics Tools	No	Yes	Yes	Up	612 ms	Not rated
Nonobench	No	Yes	Yes	Up	656 ms	Not rated
TensorFeed	No	Yes	Yes	Up	620 ms	Not rated
SStatlyte	No	Yes	Yes	Up	612 ms	Not rated
Not Human Search	No	Yes	Yes	Up	508 ms	Not rated
Deepcode	No	Yes	Unknown	Up	1479 ms	Not rated
Lacuna	No	Yes	Unknown	Up	1676 ms	Not rated
QuelLLM	No	Yes	Yes	Down	–	Not rated
DreamThreads	No	Yes	Yes	Down	–	Not rated
EEXUDE-API	No	Yes	Yes	Down	–	Not rated
OOpenVisionAPI	No	Yes	Yes	Down	–	Not rated

See also: best Machine Learning APIs · all 54 Machine Learning APIs · every API with no key