AI contract review: a second opinion from several AIs before you sign

AI contract review on Council AI means attaching a document and having several models from different labs (OpenAI, Anthropic, Google, xAI and others) review it independently, then reading one merged verdict that lists which clauses each model flagged and where they disagreed. The reason to use several models instead of one is that a single model misreads a clause in the same confident tone it uses when it reads one correctly, and nothing in the answer tells you which happened. When models trained by different labs flag the same indemnity cap or auto-renewal term, that is a stronger signal; when only one does, the verdict shows it to you instead of dropping it. It is a reading aid that helps you decide what to ask a lawyer about. It is not legal advice and does not replace one.

What a council of models tends to catch in a contract

• One-sided terms. Indemnities that run one way, liability caps that exclude the cases you care about, termination rights only the other side has.
• Renewal and notice traps. Auto-renewal with a long notice window, price escalators tied to renewal, notice that must go to an address nobody reads.
• Definitions that change the meaning. A broad definition of "Confidential Information" or "Affiliate" that quietly widens obligations elsewhere in the document.
• Gaps and contradictions. A clause that refers to a schedule that is not attached, or two sections that say different things about the same payment.
• Plain-language translation. What a dense clause actually obliges you to do, written in a sentence, with the models' disagreements about that reading shown.

A worked example

Attach the PDF and be specific about your side and what worries you:

I am the customer in this SaaS agreement. List every clause that is unusually favourable to the vendor, in order of how much it could cost me. For each, quote the clause, say what it means in one sentence, and say what a reasonable counter would be. Flag anything that contradicts another section.

Each model answers on its own, then the verdict merges the list. A clause flagged by most of the council is listed first; a clause only one model flagged is listed under it with that model's reasoning, because the minority read is sometimes the one that applies to you.

How it works

1. Bring the finished work. Paste it or attach it, and say what you want checked. A clear instruction ("find what is wrong with this") gets a review; a vague one gets a summary.
2. Several models review it independently. Each model in your council, from a different lab, writes its own review. The first round is blind unless reading each other clearly helps, so no review is a copy of another.
3. One verdict, with the dissent listed. A moderator model reads every review and writes one verdict. Points most models raised come first; a point only one model raised is listed under it instead of being averaged away.

Limits worth knowing

• Council size: up to 7 models per question on Plus, up to 10 on Pro and Ultra, picked from 21 models across 9 labs.
• Files per message: Plus 4 files of up to 10MB each, Pro 5 of up to 20MB, Ultra 10 of up to 50MB.
• Text per message: about 200,000 characters of extracted text per file and across all files in one message (roughly 120 pages). A file over that is refused with a message saying so, never silently cut.
• Agreement is a stronger signal, not a guarantee. Several models can share the same mistake, so the verdict lists the dissent rather than hiding it.
• Supported files include PDFs, Word documents, images of pages, and plain text.
• Ultra's Library can search a large document you have stored, but it retrieves the most relevant excerpts, not the whole file. For a clause-by-clause review, attach the document to the message instead.

When a council is the wrong tool

Signing decisions with real legal exposure, jurisdiction-specific questions, or anything you would be uncomfortable defending without a lawyer's sign-off. Use the council to arrive at that meeting with a sharper list of questions.

Important

Not legal advice. Council AI is a research and reading tool. Models can be wrong, including all of them at once. For anything that matters, have a qualified lawyer review the document.

Related

• AI second opinion: Why a single model's answer fails silently, and the evidence that cross-checking helps.
• Strategy and due-diligence review: Board memos, deal notes and plans, reviewed by several models before the meeting.
• Plans and limits: Council size, file limits and monthly budget for each plan.

Frequently asked questions