Free APIs › AI & Machine Learning

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Free AI & Machine Learning APIs

Free AI APIs with tiers a solo developer can actually use — LLM chat, inference for open models, moderation and generation. Most need a free account key; the limits listed are the honest ones.

✅ Verified = endpoint-tested by us · 📋 Listed = link-checked, endpoint test pending

71 APIs · 1 live-verified · 6 need no key

OpenRouter

Free keyCORS ✓C · 55

One key for 300+ LLMs — many models are free to call, including strong open models.

Free key required📁 AI & Machine Learning · Free models: ~50 req/day

Groq

Free keyCORS ✓C · 55

Extremely fast LLM inference (Llama, Qwen and more) with a genuinely useful free tier.

Free key required📁 AI & Machine Learning · Free tier with rate limits

Pollinations

No keyCORS ✓B · 84

Free AI text and image generation over a simple URL. No key, no signup — the demo king.

Live · verified 22 Oct 2026 · 1050 ms📁 AI & Machine Learning · Free, rate-limited, no key

Cohere

Free keyCORS ✓C · 55

LLMs for chat, embeddings, rerank and classification with a free trial key.

Free key required📁 AI & Machine Learning · Trial key: 1,000 calls/month

Perspective API

Free keyD · 49

Google's API that scores text for toxicity and other attributes — great for moderation demos.

Free key required📁 AI & Machine Learning · Free: 1 query/sec default

AI For Thai

Free keyCORS ✓D · 48

Free Various Thai AI API

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

AI Learning Engine

Free keyCORS ✓D · 48

Create, auto-grade, and analyze learning tasks with AI-based evaluations

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

AI/ML

Free keyCORS ✓D · 54

Access 100+ curated AI Models over 1 API

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

API Route

Free keyCORS ✓D · 54

OpenAI-compatible multi-model gateway for chat completions with API keys and usage-based billing

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

APIClaw

Free keyCORS ✓🆕 NewD · 43

Flat-rate OpenAI-compatible gateway for Claude, GPT, DeepSeek, Qwen, Kimi and GLM models

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

APIModels

Free keyCORS ✓D · 54

OpenAI-compatible API for 150+ image, video, audio and LLM models: automatic channel failover, failed calls not billed, most prices below official rates

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Azurade

Free keyCORS ✓D · 54

Image and video generation with 30+ models (Veo, Seedance, Nano Banana) over one REST API, paid per generation from credits that never expire

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Chatwith

Free keyCORS ✓D · 54

Build custom ChatGPT-style AI chatbots trained on your website and files, integrated with 5000+ apps — no coding, live in minutes.

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Cheaper Inference

Free keyF · 33

OpenAI-compatible LLM gateway: one API key for chat models from several labs, plus an Anthropic-compatible Messages endpoint

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

CitedSpy

Free keyD · 42

Track brand visibility, share of voice, and citations across AI engines like ChatGPT, Gemini, and Claude

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Cloudmersive

Free keyCORS ✓D · 54

Image captioning, face recognition, NSFW classification

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

cogDepot

Free keyF · 38

Marketplace API for AI agents to post service listings, negotiate terms, and finalize deals, with an A2A Agent Card and JSON-RPC endpoint

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

CustomGPT.ai

Free keyCORS ✓D · 48

RAG API with RESTful endpoints, comprehensive SDKs, and enterprise-grade reliability.

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Dialogflow

Free keyF · 37

Natural Language Processing

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Eden

Free keyCORS ✓D · 54

Get all AI models in one place, e.g. OpenAI, Google and lots more!

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Face-api.js

No keyC · 58

JavaScript API for face detection, recognition, and emotion analysis using TensorFlow.js

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Gandr

Free keyCORS ✓D · 54

Text to speech API for voice agents. One voice in 23 languages, every render watermarked

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Geekflare

Free keyCORS ✓D · 48

Geekflare is for web scraping, search, and data extraction, letting developers pull structured data from any website for AI agents and automation workflows

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Gladia

Free keyF · 38

Artificial intelligence API's

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

HarnessRouter

Free keyD · 48

Run coding agent harnesses (Codex, Claude Code, Hermes) behind your product through one API

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

HOL Registry Broker

Free keyCORS ✓D · 54

Discovery API for AI agents & MCP servers (search, verify, UAID, chat)

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Imagga

Free keyD · 42

Image Recognition Solutions like Tagging, Visual Search, NSFW moderation

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Inferdo

Free keyD · 48

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

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Irisnet

Free keyCORS ✓D · 48

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

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

ISMS Copilot

Free keyF · 38

OpenAI-compatible text-only compliance completions: curated framework knowledge (100+ modules) injected before generation and disclosed on success

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Keen IO

Free keyD · 42

Data Analytics

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Machinetutors

Free keyCORS ✓D · 48

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

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Magic Hour

Free keyCORS ✓D · 54

Generate and edit AI videos, images, and audio through a self-serve REST API

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

MessengerX.io

Free keyCORS ✓D · 48

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

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Neuronto

No keyCORS ✓C · 58

Free search over MCP servers, A2A agents, skills and APIs across Agentic Resource Discovery registries

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

NLP Cloud

Free keyD · 42

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

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

OpenAI

Free keyCORS ✓D · 54

Use AI models such as ChatGPT or DALL-E to experience the capabilities of AI

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Prismix Status API

No keyCORS ✓C · 58

Real-time uptime and incident status for 75+ AI services (OpenAI, Anthropic, Cursor, Gemini)

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Requesty

Free keyCORS ✓D · 48

OpenAI-compatible gateway that routes requests to 600+ models from 30+ providers, with fallbacks, caching and spend tracking

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

RouterBase API

Free keyD · 48

One OpenAI-compatible API for accessing 200+ AI models from OpenAI, Anthropic, Google, Meta, xAI, DeepSeek, and more

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

SkyBiometry

Free keyF · 37

Face Detection, Face Recognition and Face Grouping

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Spam Hunter

Free keyCORS ✓D · 48

Free service to classify text as spam using ML

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Summarize Text with AI

Free keyCORS ✓D · 43

This API generates customizable summaries of text and web pages using AI

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Suprsonic

Free keyD · 44

One API key for AI agents: web search, scraping, company and people data, speech, images and research. 200 free credits, no card needed

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Synap

Free keyD · 44

OpenAI-compatible API for open-weight models: chat completions, streaming, tool calling and JSON-schema output, billed per token

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

TranscriptFetch

Free keyCORS ✓D · 54

The transcript API for social media video. Get transcripts at scale from YouTube, TikTok or Instagram.

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

TranslateMyImage

Free keyF · 38

Translate the text inside JPG, PNG or WEBP images into 9 languages and get the translated image back

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

UnoRouter

Free keyCORS ✓D · 48

OpenAI-compatible gateway routing chat/completions across 500+ models with a free tier

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Unplugg

Free keyD · 48

Forecasting API for timeseries data

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

UpRes

Free keyD · 44

Image, video and speech restoration up to 8K through a self-serve REST API

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Voxell Forge

Free keyF · 38

OpenAI-compatible text embeddings API. The turbo model is free forever with no credit card; pro and ultra are paid

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

WolframAlpha

Free keyF · 37

Provides specific answers to questions using data and algorithms

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

XiuRouter

Free keyCORS ✓D · 48

Route requests to leading AI models through one API with native OpenAI, Anthropic, and Gemini protocols

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

AI Translate text API

Free keyCORS ✓D · 43

The Text Translation API translates text into any of the 80 supported languages, providing accurate and context-aware translations

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Analyse Keywords API

Free keyCORS ✓D · 43

This API lets you extract high-frequency keywords, key phrases and latent semantic keywords from any URL

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Brainiall Text-to-Speech

Free keyCORS ✓D · 48

Pay-as-you-go multilingual text-to-speech with Portuguese voices and WAV, MP3, and Opus output

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Detect Language API

Free keyCORS ✓D · 48

This API detects the language from any text (+ 50 languages supported)

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

ELI

Free keyD · 42

Natural Language Processing Tools for Thai Language

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Fuzzy Text Search API

Free keyCORS ✓D · 48

The Fuzzy Text Search API finds close matches for user queries, handling typos and partial inputs to deliver relevant results quickly and accurately

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Google Cloud Natural

Free keyF · 37

Natural language understanding technology, including sentiment, entity and syntax analysis

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

LanguageTool

No keyC · 58

Style and Grammar Checker for 25+ Languages

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

LibreTranslate

No keyD · 52

Translation tool with 17 available languages

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Proofread and Grammar Check API

Free keyCORS ✓D · 48

The Proofreading and Grammar Check API ensures the provided text is grammatically correct and polished by automatically proofreading and checking for errors

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Safe text

Free keyCORS ✓D · 48

Clean short and long texts. It is probably world most complete text-cleaner API! Providing very fast and accurate results.

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Semantria

Free keyD · 42

Text Analytics with sentiment analysis, categorization & named entity extraction

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs

Tisane

Free keyCORS ✓D · 43

Text Analytics with focus on detection of abusive content and law enforcement applications

Listed · link checked 22 Oct 2026📁 AI & Machine Learning · Free tier — confirm exact limits in the official docs
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