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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. 1Modelfax logo

    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. 2AI Economics Tools logo

    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. 3Nonobench logo

    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. 4TensorFeed logo

    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. 5

    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. 6DeepAI logo

    DeepAI API

    Online · 114 ms

    Provides AI-powered APIs for text generation, image processing, and more.

    • Fast: 114 ms response
    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  7. 7Hugging Face logo

    Hugging Face API

    Online · 212 ms

    AI model hub with inference API for NLP, computer vision, and audio.

    • Fast: 212 ms response
    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  8. 8Not Human Search logo

    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
  9. 9Together AI logo

    Together AI API

    Online · 376 ms

    Fast 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. 10Audexum logo

    Audexum API

    Online · 781 ms

    Speech-to-text in 25 languages and text-to-speech with 43 voices in 32 languages.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  11. 11BRAINIALL logo

    BRAINIALL API

    Online · 948 ms

    PT-BR and Spanish audio transcription with diarization and SRT/VTT.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  12. 12Cloudmersive logo

    Cloudmersive API

    Online · 898 ms

    Image captioning, face recognition, NSFW classification.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  13. 13Cohere logo

    Cohere API

    Online · 806 ms

    NLP API for text generation, embeddings, classification and summarization with a free trial tier.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  14. 14GEN logo

    GEN API

    Online · 966 ms

    Creative AI video engineer for ads, AI UGC and microdramas; free editor and social publishing.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS
  15. 15Groq logo

    Groq API

    Online · 484 ms

    Fast AI inference API with free tier, supports Llama, Mixtral, Gemma models.

    • Callable from the browser (CORS)
    • HTTPS
    apiKeyHTTPSCORS

Machine Learning APIs compared

Top Machine Learning APIs compared
APIAPI keyHTTPSCORSUptimeResponseRating
Modelfax logoModelfaxNoYesYesUp328 msNot rated
AI Economics Tools logoAI Economics ToolsNoYesYesUp612 msNot rated
Nonobench logoNonobenchNoYesYesUp656 msNot rated
TensorFeed logoTensorFeedNoYesYesUp620 msNot rated
StatlyteNoYesYesUp612 msNot rated
DeepAI logoDeepAIRequiredYesYesUp114 msNot rated
Hugging Face logoHugging FaceRequiredYesYesUp212 msNot rated
Not Human Search logoNot Human SearchNoYesYesUp508 msNot rated
Together AI logoTogether AIRequiredYesYesUp376 msNot rated
Audexum logoAudexumRequiredYesYesUp781 msNot 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.