How to Get a Free Aion Labs API Key (2026)
3 free models available — no credit card required. Get your Aion Labs API key → Test free models →
Aion Labs FreeLLM Score
All Free Aion Labs Models — Context Windows & Rate Limits
| Model | Context | Max Output | Modality | Rate Limit | Released | Status |
|---|---|---|---|---|---|---|
| Aion 2.0 | 128K | 32K | 15 RPM, 20K TPD | Feb 23, 2026 | Online | |
| Aion 2.5 | 128K | 32K | 15 RPM, 20K TPD | — | Online | |
| Aion-RP 1.0 (8B) | 32K | 8K | 15 RPM, 20K TPD | — | Online |
What is Aion Labs?
Aion 2.0 — daily token allowance, 131K context, no credit card.
Aion Labs is an independent AI provider offering its proprietary Aion model family for free. The free tier provides a daily token allowance (exact amount unpublished) with 131K context windows across all models. No credit card required. Best suited for lightweight chat and prototyping tasks.
- 131K context window
- Daily token allowance (no hard RPM)
- Aion-2.0, Aion-1.0, Aion-1.0-Mini
- No credit card required
API Compatibility: Aion REST API (not OpenAI-compatible)
How to Get a Aion Labs API Key
- 1
- 2 Go to API Keys in dashboard
- 3 Generate an API key
- 4 Choose a model Aion-2.0 for best quality. Aion-1.0-Mini for speed. Daily token allowance.
- 5 Configure client Base URL: https://api.aionlabs.ai/v1. Review their API docs for the request format.
Aion Labs Free Tier Limits & Pricing
Aion Labs API Setup Tutorial & Tools
Aion Labs is fully compatible with popular AI coding assistants like Cursor, Claude Code, and more. To see step-by-step API configuration instructions for your favorite tool, please visit our Global Configuration Guide →
Use Cases
What Aion Labs's free models are best for, based on aggregated model capabilities:
Limitations & Caveats
- Unpublished token allowance — hard to plan capacity
- Not OpenAI-compatible
- Small independent provider with limited track record
Frequently Asked Questions
How does Aion's daily token allowance work?
Instead of a fixed RPM/RPD limit, Aion provides a daily token budget that resets each day. The exact amount isn't published, but users report generous limits for typical prototyping use. Monitor your usage in the Aion dashboard.
What's the difference between Aion-2.0 and Aion-1.0?
Aion-2.0 is the latest flagship model with improved reasoning and instruction-following. Aion-1.0 is the previous generation still available for free. Aion-1.0-Mini is a faster, smaller variant for simple tasks.
Is Aion Labs reliable for production?
Aion Labs is smaller than major providers like Groq or OpenRouter. It's best for prototyping and personal projects. For production use with SLAs, consider a larger provider.