Best Machine Learning APIs in 2026
The top 15 of 54 free Machine Learning APIs, ranked by how easy they are to start with (API key, HTTPS, CORS), how reliable they are in our daily health checks, and what developers rate them. Modelfax API takes the top spot.
Last tested Oct 24, 2026 · Rankings update daily
Ranking
- 1

Modelfax API
Online · 328 msLLM 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
AI Economics Tools API
Online · 612 msToken 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
Nonobench API
Online · 656 msOpen-source benchmark of how well LLMs solve nonogram puzzles.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4

TensorFeed API
Online · 620 msReal-time AI news, model pricing, service status, and agent activity feeds.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
Statlyte API
Online · 612 msLive pricing, context windows and model ids for major LLM APIs.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 6
DeepAI API
Online · 114 msProvides AI-powered APIs for text generation, image processing, and more.
- Fast: 114 ms response
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 7
Hugging Face API
Online · 212 msAI model hub with inference API for NLP, computer vision, and audio.
- Fast: 212 ms response
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 8
Not Human Search API
Online · 508 msAI tool discovery with agentic scoring for 8,600+ tools and MCP servers.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 9

Together AI API
Online · 376 msFast inference API for open-source LLMs including Llama, Qwen, DeepSeek with a free tier.
- Fast: 376 ms response
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 10

Audexum API
Online · 781 msSpeech-to-text in 25 languages and text-to-speech with 43 voices in 32 languages.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 11

BRAINIALL API
Online · 948 msPT-BR and Spanish audio transcription with diarization and SRT/VTT.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 12
Cloudmersive API
Online · 898 msImage captioning, face recognition, NSFW classification.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 13
Cohere API
Online · 806 msNLP API for text generation, embeddings, classification and summarization with a free trial tier.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 14

GEN API
Online · 966 msCreative AI video engineer for ads, AI UGC and microdramas; free editor and social publishing.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS - 15
Groq API
Online · 484 msFast AI inference API with free tier, supports Llama, Mixtral, Gemma models.
- Callable from the browser (CORS)
- HTTPS
apiKeyHTTPSCORS
Machine Learning APIs compared
| API | API key | HTTPS | CORS | Uptime | Response | Rating |
|---|---|---|---|---|---|---|
| No | Yes | Yes | Up | 328 ms | Not rated | |
| No | Yes | Yes | Up | 612 ms | Not rated | |
| No | Yes | Yes | Up | 656 ms | Not rated | |
| No | Yes | Yes | Up | 620 ms | Not rated | |
| Statlyte | No | Yes | Yes | Up | 612 ms | Not rated |
| Required | Yes | Yes | Up | 114 ms | Not rated | |
| Required | Yes | Yes | Up | 212 ms | Not rated | |
| No | Yes | Yes | Up | 508 ms | Not rated | |
| Required | Yes | Yes | Up | 376 ms | Not rated | |
| Required | Yes | Yes | Up | 781 ms | Not rated |
More Machine Learning APIs
Best Machine Learning API FAQ
What is the best free Machine Learning API in 2026?
Based on access, reliability and developer ratings, the top free Machine Learning APIs right now are Modelfax API, AI Economics Tools API and Nonobench API. Modelfax API ranks first. Rankings update daily from health checks of all 54 Machine Learning APIs in the directory.
What is the best Machine Learning API without an API key?
Modelfax API, AI Economics Tools API and Nonobench API need no API key, so you can call them without signing up. 12 of the 54 ranked Machine Learning APIs are keyless.
Which Machine Learning API works from the browser?
Modelfax API, AI Economics Tools API and Nonobench API support CORS over HTTPS, so front-end JavaScript can call them directly without a proxy.
How are these APIs ranked?
Each API gets a score from: no API key (+), HTTPS (+), CORS support (+), 30-day uptime and response time from our daily health checks, and ratings from developers on this site. APIs that failed three checks in a row are left out until they recover.
