AI API Tools

AI APIs and platforms for developers building intelligent features in 2026 — models, orchestration and infrastructure.

Top free picks

1

OpenAI API

GPT models via a simple API

Visit OpenAI API →

2

Anthropic API

Claude models for developers

Visit Anthropic API →

3

OpenRouter

One API for many models

Visit OpenRouter →

4

Hugging Face

Open models and inference

Visit Hugging Face →

5

LangChain

Build AI app workflows

Visit LangChain →

Free plans and limits change often — always check the official site for the latest free-tier details.