AI & Machine Learning APIs
Large language models, speech, vision and embeddings you can call over HTTP. 10 listed: 0 completely free, 0 usable without an API key.
Anthropic Claude API
Claude models for text, code, vision and tool use, with prompt caching and batch processing.
OpenAI API
GPT models for text, images, audio and embeddings.
Google Gemini API
Gemini multimodal models through Google AI Studio, with a free tier for experimentation.
Mistral AI API
Open-weight and commercial models from Mistral for chat, code and embeddings.
Cohere API
Command models, embeddings and reranking aimed at enterprise search and RAG.
Hugging Face Inference Providers
Run thousands of open models through one API routed to multiple inference providers.
Replicate
Run open-source image, video, audio and language models with pay-per-second pricing.
ElevenLabs
Text-to-speech, voice cloning and speech-to-text in many languages.
Deepgram
Fast speech-to-text and text-to-speech for real-time and batch audio.
AssemblyAI
Speech-to-text with speaker labels, summaries and audio intelligence features.
Comparing ai & machine learning APIs
| API | Auth | Pricing model | Docs |
|---|---|---|---|
| Anthropic Claude API | API key | Paid | docs.claude.com |
| OpenAI API | API key | Paid | platform.openai.com |
| Google Gemini API | API key | Free tier | ai.google.dev |
| Mistral AI API | API key | Free tier | docs.mistral.ai |
| Cohere API | API key | Free tier | docs.cohere.com |
| Hugging Face Inference Providers | API key | Free tier | huggingface.co |
| Replicate | API key | Paid | replicate.com |
| ElevenLabs | API key | Free tier | elevenlabs.io |
| Deepgram | API key | Free tier | developers.deepgram.com |
| AssemblyAI | API key | Free tier | assemblyai.com |
Not sure which to pick? Read our 12-point API checklist and guide to API pricing models.