Doclink

As document chat tools go, Doclink is unusual mostly for how it charges: a free plan with no credit card, and a single $20 lifetime payment in place of a monthly subscription.

Doclink is an AI document chat tool that lets you upload files, ask questions about them and get answers drawn from your own material.

Students, researchers and office workers who need facts out of long documents will find it the most natural fit.

The free plan allows 10 sources, 3 folders and 25 questions per day.

Premium costs $20 once and raises the limits to 100 sources and 10 folders, with unlimited questions, priority support and early access to new features.

If recurring fees put you off, that model is a real point in its favor.

Teams get a custom-priced Enterprise plan.

Doclink Enterprise covers everything in Premium per user, for up to 100 people, and adds on-premises integration, 24/7 priority support, a customizable experience and sharing within your organization.