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100% Free & Privacy-First

You bring the key,
we bring the speed.

FormFill AI is completely free to install. Use your own OpenAI API key to power the engine, giving you complete control over your usage, privacy, and costs.

Free Forever

FormFill AI BYOK

Perfect for individuals who want complete control over their AI usage and data costs.

$0/mo
✓ Bring Your Own Key (OpenAI or OpenRouter OAuth)
✓ Unlimited form fills
✓ Automated browser-level secure storage
✓ Semantic Form Detection Engine
✓ Fast, Balanced, & Deep Thinking modes
✓ Resume PDF Import
Add to Chrome — Free

Common Questions

Everything you need to know

Is FormFill AI really free?

Yes. The extension is entirely free to download and use. Your only cost is the API usage billed directly to your OpenAI account. There are no subscriptions or hidden fees.

How much will the API usage cost me?

The cost per form depends on the AI mode you use (Fast vs. Thinking) and the length of the form. On average, a standard form costs less than $0.01. You can always set hard limits in your OpenAI dashboard to avoid surprises.

Start filling forms faster today

Join thousands of professionals saving hours every week. Free forever with BYOK.

Add to Chrome — it's free