All four providers below offer a genuine free tier — no credit card required. Pick any one, paste the key into the tool, and start scanning code.
Groq builds custom hardware (LPUs) specifically for AI inference — it's noticeably faster than GPU-based providers. Their free tier is generous and has no EU restrictions. Recommended as your first choice.
gsk_)OpenRouter is a router — it gives you one API key that works across many AI providers (OpenAI, Anthropic, Meta, Mistral, and more). Models marked :free are completely free with no billing required. Great if you want to experiment with different models.
sk-or-)Cerebras built the world's largest AI chip — their hardware runs Llama models at speeds that rival or beat Groq. Their free tier is very generous and works globally including the EU. A great alternative if Groq hits its daily limit.
csk-)Mistral AI is a French company building high-quality open-weight models. Their infrastructure is hosted in Europe, making them a strong choice for users concerned about data sovereignty and GDPR compliance. mistral-small-latest is their most capable free model.
Start with Groq — it's the fastest and most reliable free option.
If you hit the daily limit, switch to Cerebras as a backup.
Use OpenRouter if you want to explore different models.
Choose Mistral if EU data hosting matters to you.
You can save a key for each provider — the tool remembers all of them.
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