Compare contracts with AI

Add 2 versions of a document and get a plain explanation of what changed and how much each change matters. This tool uses AI, so we send the text of both, not the files.

Uses AIPro

Part of Pro and the 7-Day Pass, which open soon.

Coming soon

Part of Pro and the 7-Day Pass. Uses AI credits.Part of Pro and the 7-Day Pass. Uses AI credits.

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AI Compare at a glance

Coming soon · AI Compare is an AI tool that compares two versions of a document and explains what changed and how much it matters. For contracts, it calls out changed dates, amounts, parties, obligations and termination terms. Wispdf sends the text of both versions, not the files, to its AI model. It is not legal advice.

Limits · Files up to 50 MB each, 1 GB with Pro · Up to 2 files at a time · Part of Pro and the 7-Day Pass, which open soon

Last updated October 19, 2026

How to use AI Compare

Add both versions
Choose the original PDF and the revised one.
Read the changes
AI Compare lists what changed and how much each change matters, in plain words.
Check the details
Read each change against the documents. For anything legal, talk to a lawyer before you sign.

What AI Compare does

Comparing two versions of a document means finding the places where the text has changed between them. AI Compare also explains what changed and how much it matters. For contracts, it calls out changed dates, amounts, parties, obligations and termination terms. Wispdf sends the text of both versions, not the files, to our AI model. AI Compare is not legal advice.

People use it to

Spot what your landlord changed in this year's lease renewal
Check a client's edits to your freelance contract before you sign
Review a vendor's revised terms against the version your team approved

What's included

Changes in plain words

Each change is explained in everyday language, so you do not have to read both versions line by line.

How much it matters

Every change comes with a note on how much it matters, so small edits do not bury big ones.

Contract terms called out

In contracts, changed dates, amounts, parties, obligations and termination terms are flagged.

Text, not files

We send the text of both versions to our AI model, never the files. It is never used for training.

Where your file goes

AI Compare uses AI, so we send the extracted text of both versions, not the files, and it is never used to train models. Chats without an account are deleted after 24 hours, and account holders choose how long theirs are kept.

Uses AIPart of Pro and the 7-Day Pass. Uses AI credits.

How privacy works at Wispdf See plans and limits

Questions about AI Compare

How much does AI Compare cost?

AI Compare is part of Pro and the 7-Day Pass, and it uses 5 AI credits for each pair of documents. Pro includes 1,500 credits a month, for $8.25 a month billed yearly or $12 billed monthly, with a 7-day free trial and no card.

Are my contracts uploaded?

No. AI Compare sends the extracted text of both versions, not the files, to our AI model. That text is never used to train models. If you compare without an account, your chats are deleted after 24 hours. Account holders choose how long chats are kept and can delete them any time.

Is AI Compare legal advice?

No. AI Compare is not legal advice. It helps you see what changed between two versions and points out changes to dates, amounts, parties, obligations and termination terms. AI can misjudge how much a change matters, or miss one, so read the changed sections yourself and ask a lawyer before you sign anything important.

How is AI Compare different from Compare PDF?

Compare PDF runs on your device and makes a PDF report with each changed page as an overlay and its text changes marked. AI Compare uses AI credits and explains the changes in plain words, including how much each one matters. Both are part of Pro and the 7-Day Pass, and they work well together.

Can I compare two PDFs on my phone?

Yes. AI Compare works in any modern browser on iPhone, iPad, Android, Windows, Mac, Linux and Chromebook, with no app to install. Choose both versions from your files and read the explanation on screen. For long contracts, a bigger screen makes it easier to check each change against the documents.

What kinds of documents can I compare?

AI Compare works with any 2 versions of a PDF, such as a lease, a policy, a proposal or a set of terms and conditions. It explains what changed and how much it matters. For contracts, it pays special attention to dates, amounts, parties, obligations and termination terms. Each comparison costs 5 AI credits.