Free Machine Learning APIs

54 free public Machine Learning APIs for developers. 54 support HTTPS, 35 allow CORS from the browser and 12 need no API key.

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Showing 54 of 54 APIs

AI Economics Tools

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

No authHTTPSCORS

AI For Thai

Free Various Thai AI API

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AnswerLine

ChatGPT, Gemini, Copilot, AI Mode and Google Search/News results as structured JSON

apiKeyHTTPSCORS ?

Audexum

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

apiKeyHTTPSCORS

BRAINIALL

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

apiKeyHTTPSCORS

Clarifai

Computer Vision

OAuthHTTPSCORS ?

Cloudmersive

Image captioning, face recognition, NSFW classification

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Cohere

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

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DeepAI

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

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Deepcode

AI for code review

No authHTTPSCORS ?

Dialogflow

Natural Language Processing

apiKeyHTTPSCORS ?

DreamThreads

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

No authHTTPSCORS

EXUDE-API

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

No authHTTPSCORS

GEN

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

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GoldBean

OCR, Translation, NLP & ERNIE LLM via Baidu AI (free tier available)

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Google Gemini

Multimodal generative AI for text, vision, and code generation

apiKeyHTTPSCORS ?

Groq

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

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Hirak FaceAPI

Face detection, face recognition with age estimation/gender estimation, accurate, no quota limits

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Hugging Face

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

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Imagga

Image Recognition Solutions like Tagging, Visual Search, NSFW moderation

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Inferdo

Computer Vision services like Facial detection, Image labeling, NSFW classification

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Irisnet

Realtime content moderation API that blocks or blurs unwanted images in real-time

apiKeyHTTPSCORS

Jina AI

Free AI API for embeddings, reranking, and text processing

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Keen IO

Data Analytics

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Lacuna

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

No authHTTPSCORS ?

Laya Decision Gateway

Sub-35ms AI gateway for prompt injection defense, support ticket triage & content moderation

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Machinetutors

AI Solutions: Video/Image Classification & Tagging, NSFW, Icon/Image/Audio Search, NLP

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MediaCraft AI

Chinese content compliance review (17 platforms), EN↔CN translation, and SEO optimization. Pay-per-call via x402 (Solana USDC).

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MessengerX.io

A FREE API for developers to build and monetize personalized ML based chat apps

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Mistral AI

High-performance LLM API by Mistral AI including Mistral and Mixtral models, with a free tier

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Modelfax

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

No authHTTPSCORS

NLP Cloud

NLP API using spaCy and transformers for NER, sentiments, classification, summarization, and more

apiKeyHTTPSCORS ?

Nonobench

Open-source benchmark of how well LLMs solve nonogram puzzles

No authHTTPSCORS

Not Human Search

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

No authHTTPSCORS

onomeo

OpenAI-compatible, about 30 free LLMs, 30 calls per 5 hours, optional pay-as-you-go, public beta

apiKeyHTTPSNo CORS

OpenRouter

Unified API for 300+ LLMs from OpenAI, Anthropic, Meta, Mistral and more, with a free tier

apiKeyHTTPSCORS

OpenVisionAPI

Open source computer vision API based on open source models

No authHTTPSCORS

Perspective

NLP API to return probability that if text is toxic, obscene, insulting or threatening

apiKeyHTTPSCORS ?

QuelLLM

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

No authHTTPSCORS

Replicate

Run open-source AI models in the cloud including image generation, LLMs and audio models

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Requesty

OpenAI compatible LLM router for 600+ models, with a free tier for free models

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Roboflow Universe

Pre-trained computer vision models

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SafeReel

NSFW detection for images and full-length videos by URL, free tier

apiKeyHTTPSCORS

SkyBiometry

Face Detection, Face Recognition and Face Grouping

apiKeyHTTPSCORS ?

Speak AI

Transcribe and analyze audio and video in 100+ languages

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Statlyte

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

No authHTTPSCORS

Tanvo

Image, video and song generation on 30 AI models (Nano Banana, Kling, Veo, Suno), with a free tier

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TensorFeed

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

No authHTTPSCORS

Time Door

A time series analysis API

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Together AI

Fast inference API for open-source LLMs including Llama, Qwen, DeepSeek with a free tier

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TokenRoute

One OpenAI-compatible endpoint for hundreds of LLMs, with a free tier and per-token pricing

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Unplugg

Forecasting API for timeseries data

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Voxell Forge

OpenAI-compatible text embeddings API, free-forever model with no credit card required

apiKeyHTTPSNo CORS

WolframAlpha

Provides specific answers to questions using data and algorithms

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Machine Learning API FAQ

How many free Machine Learning APIs are there?

There are 54 free public Machine Learning APIs in the directory. 54 support HTTPS, 35 are confirmed to allow CORS and 12 need no API key.

Which Machine Learning APIs work without an API key?

12 Machine Learning APIs need no authentication, including AI Economics Tools, Deepcode, DreamThreads and EXUDE-API. You can call them straight away without signing up.

Which Machine Learning APIs can I call from the browser?

APIs with CORS enabled can be called directly from front-end JavaScript. In Machine Learning, that includes AI Economics Tools, AI For Thai, Audexum and BRAINIALL.

Machine Learning API FAQ

How many free Machine Learning APIs are there?

There are 54 free public Machine Learning APIs in the directory. 54 support HTTPS, 35 are confirmed to allow CORS and 12 need no API key.

Which Machine Learning APIs work without an API key?

12 Machine Learning APIs need no authentication, including AI Economics Tools, Deepcode, DreamThreads and EXUDE-API. You can call them straight away without signing up.

Which Machine Learning APIs can I call from the browser?

APIs with CORS enabled can be called directly from front-end JavaScript. In Machine Learning, that includes AI Economics Tools, AI For Thai, Audexum and BRAINIALL.