Free APIs
Free AI & ML APIs
| API | Free tier | Auth | Docs |
|---|---|---|---|
| Google Gemini API Gemini language and multimodal models via API Catch: Free-tier content may be used to improve Google products | Free tier with rate limits on selected models | API key | docs |
| Groq Fast open-model inference (Llama, Qwen and more) Catch: Free plan limits requests, tokens per minute and per day | Free plan with per-model rate limits | API key | docs |
| OpenRouter One API for many models, including free (:free) models Catch: Free-model daily caps are low unless you add credits | Free models (:free variants) with rate limits | API key | docs |
| Hugging Face Inference Providers Run open models through serverless providers Catch: Free credits are small; PRO or pay-as-you-go beyond | Monthly free inference credits for free accounts | API key | docs |
| Mistral AI (La Plateforme) Mistral language, embedding and OCR models Catch: Experiment tier has low rate limits; not for production | Free Experiment tier with rate limits | API key | docs |
| Cohere Chat, embeddings and rerank models Catch: Trial keys are not for production or commercial use | Free trial key: 1,000 API calls/month | API key | docs |
| Cloudflare Workers AI Run open models on Cloudflare's network Catch: Over-limit requests fail until reset on the free plan | Free plan: 10,000 Neurons/day | API key | docs |
| Ollama API Local REST API for running open models Catch: Needs your own hardware | Free and open source, runs on your machine | No key | docs |
| Voyage AI Embedding and rerank models Catch: One-time free allowance, not monthly | First 200 million tokens free for each account (per model family) | API key | docs |
| Tavily Search API built for LLM agents Catch: Monthly credits; no card needed on free plan | Free plan: 1,000 API credits/month | API key | docs |
| OCR.space Image and PDF OCR over HTTP Catch: Free tier: 1 MB file limit, 3 PDF pages | Free key: 25,000 requests/month | API key | docs |
FAQ
What is the best free ai & ml API?+
Google Gemini API, Groq, OpenRouter are good places to start. Compare the free tiers and catches in the table; they differ mostly in limits and whether commercial use is allowed.
Is there a ai & ml API without an API key?+
Yes: Ollama API work without a key.
More free APIs: Weather · Maps & geocoding · Finance & crypto · Currency exchange · Email & messaging · IP & geolocation · News & social · Sports · Movies, TV & anime · Music · Books & reference · Space & science · Government & open data · Translation & language · Images & media · Fake data & testing · Food & recipes · Transportation · Health · Developer tools · Security · Games & fun