Top 20 Free AI APIs in 2026 (No Credit Card Required)

Gemini 2.0 Flash: 1M context, multimodal, function calling

DeepSeek-V3: 128K context, top-tier reasoning at fraction of cost

Llama 3.1 70B at 250 tok/s. Fastest inference

Llama 3.1 405B at 969 tok/s. OpenAI-compatible

1000s of models. SDXL, Flux, CogVideoX

Stable Diffusion 3, image-to-image, upscaling

AI background removal. Process millions at scale

AI-optimized search. Structured results with citations

Semantic search. Content-based, not keyword matching

Reader API turns URLs into LLM-ready markdown. Embeddings + reranking

Turn websites into LLM-ready markdown at scale

Postgres, auth, realtime, storage. Firebase alternative

Deploy frontend apps instantly. Serverless functions included

Serverless Redis and Kafka. Per-request pricing

Serverless Postgres with database branching

Error tracking, performance monitoring, session replay

Product analytics, feature flags, A/B testing

Complete auth & user management. Drop-in React components

Modern email API with React components

Open-source workflow automation. 400+ integrations