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GuideAI DevelopmentAugust 20, 2026

3 Sites for Free AI API Keys

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A field guide to three sites offering free AI API keys: Bytez for 100,000+ open-source models across every modality, NVIDIA NIM for 80+ top models with no credit card, and OpenRouter for 20+ free models behind one OpenAI-compatible endpoint.

What's inside
  • Bytez: 100,000+ open-source models behind a single key
  • NVIDIA NIM: 80+ top models, OpenAI-compatible, no credit card
  • OpenRouter: 20+ free models behind one unified endpoint
  • Text, image, video and audio — all on free tiers
  • The caveat: free limits shift over time, so claim them early

Stop Paying for API Access

Everyone else seems to be getting free API keys for top AI models while you pay hundreds a month. Most people just don't know these three sites exist — one key each, tens of thousands of models, generous free limits.


The Three Sites

Bytez: the largest inference API on the internet, with 100,000+ open-source models for text, image, video and audio behind a single key. NVIDIA NIM: free access to 80+ top models — DeepSeek, Kimi, GLM, GPT-OSS and more — through an OpenAI-compatible API with no credit card. OpenRouter: 20+ free models including GLM, Kimi, Qwen and Llama behind one unified endpoint, with an auto-pick option for whichever free model fits.


What's in the Guide

What each site gives you, what the free limits actually look like, and a direct link to grab every key — plus the caveat worth knowing: free tiers and rate limits shift over time, so claim them while they're generous.

The full breakdown is in the PDF.


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