Short answer: Mintlify is a hosted docs platform built for a broad set of MDX pages and AI answers; Powerduck generates the API reference from the contract and exports it as portable static files. The overlap is the reference; the difference is the scope and the bill. Choose by whether the docs are a broad product or a synced reference.

What Mintlify is best at

A polished, hosted home for guides, tutorials, and reference, with a good default design and AI answers. It is the right choice when documentation is a product in its own right.

What a generated reference is best at

CapabilityMintlifyPowerduck
ContentMDX + referenceReference from spec
Source of truthDocs repoOpenAPI file
HostingCloudStatic / Hub
Lock-inPlatformPortable files

The drift problem

A reference wired into a larger platform can still be a separate surface from the contract. A generated reference is the contract rendered, so it cannot drift.

The decision rule

Use Mintlify for a broad, hosted docs product. Use Powerduck when the reference must stay in lockstep with the spec, export cleanly, and avoid a per-page bill.

This is part of the Powerduck vs Mintlify comparison. Next, read the pricing comparison.