# Chai-1 (Chai Discovery)

Chai-1 is free, Apache-2.0-licensed for academic and commercial use — a genuinely open structure-prediction model. Chai-1 (Chai Discovery) is freemium — a usable free tier with paid plans above it, at chaidiscovery.com.

## Facts

- **Pricing tier:** Free tier + paid
- **Works on:** Web, Self-hosted
- **Works in browser:** Yes

## Capabilities

- Chai-1 is free, Apache-2.0-licensed for academic and commercial use — a genuinely open structure-prediction model
- Chai-2 (paid, enterprise) generates de novo antibodies directly from target epitopes, used by Lilly, Novartis, Pfizer

## FAQ

### What is Chai-1 (Chai Discovery)?

Chai-1 (Chai Discovery) is listed under Science & Research AI, in the Research & Learning category on Flocci AI Tools. Chai-1 is free, Apache-2.0-licensed for academic and commercial use — a genuinely open structure-prediction model. It is freemium — a usable free tier with paid plans above it, and it lives at chaidiscovery.com.

### Is Chai-1 (Chai Discovery) free?

Chai-1 (Chai Discovery) is freemium: there is a free tier you can work in and paid plans above it. It is one of 426 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.

### Can I use Chai-1 (Chai Discovery) in a browser, or is there an app?

Chai-1 (Chai Discovery) works in a normal browser tab with no install. It is available on the web and self-hosting.

### What can Chai-1 (Chai Discovery) do?

Chai-1 (Chai Discovery) does two things the catalog singles out: Chai-1 is free, apache-2.0-licensed for academic and commercial use — a genuinely open structure-prediction model; chai-2 (paid, enterprise) generates de novo antibodies directly from target epitopes, used by lilly, novartis, pfizer.

### What is the best free alternative to Chai-1 (Chai Discovery)?

AlphaFold Server is the closest free alternative: it sits in the same Science & Research AI sub-category and is free. Biomni, AI Scientist-v2 and Boltz also start free. The full list is on the alternatives page.

## Related

- [Chai-1 (Chai Discovery) alternatives](https://aitools.flocci.in/alternatives/chai-1-chai-discovery)
- [Science & Research AI](https://aitools.flocci.in/category/research-learning/science-research-ai)
- [Best free AI tools for science and research](https://aitools.flocci.in/best/best-science-research-ai)
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Source: Flocci AI Tools — https://aitools.flocci.in/tool/chai-1-chai-discovery

Facts last verified: October 2026