Two founders are meeting on Thursday to compare cap tables and product roadmaps before deciding whether to merge their companies, and neither wants to talk numbers without paper in place first. The cheapest way to draft an NDA with AI is a clause-assembly drafter included in a flat monthly plan, rather than a per-document fee or a free download that leaves the real cost for later. Below is a genuine cost comparison across the four routes people actually use, why "written by AI" hides two very different processes, and the exact flow from a five-minute questionnaire to a signed mutual NDA.
> Quick answer: The cheapest way to draft an NDA with AI is a clause-assembly tool bundled into a flat-price document platform, because it costs nothing extra per NDA and builds the carve-outs and term correctly from vetted clauses. A free download can look cheaper on the day but hides the cost of a missing carve-out. A general chatbot is free too, but it writes new wording each time with no fixed source behind it. For most routine NDAs the assembled draft is enough on its own.
Four ways to get an NDA, priced honestly
| Method | What it costs | Where the cost really lands |
|---|---|---|
| Free download or blank page | £0 upfront | Missing carve-outs or a vague purpose clause surface later, usually mid-negotiation |
| Paid template site | A one-off fee per document | Static wording, never checked against your actual facts or term length |
| General-purpose AI chatbot | Usually free | Invented wording each run, no way to confirm it matches your jurisdiction |
| Clause-assembly drafter in a flat-price platform | Included in your monthly plan | Vetted clauses assembled to your answers, the same result every time |
A free download is the classic false economy. Skip the standard carve-outs, information already public, information you already held, information built independently, information you must disclose by law, and the document is either unenforceable or so one-sided nobody signs it. Our mutual NDA clause checklist sets out exactly which clauses have to be there. A paid template site charges you money for wording that still has not been matched to your actual purpose or term.
Why a chatbot NDA is not actually free once you factor in risk
The honest problem with a general-purpose chatbot is not the price. It is that the wording it produces has never been checked against anything. A language model predicts statistically likely text, not verified law, so a generated confidentiality clause can look entirely convincing while quietly using US concepts, referencing the wrong statute, or leaving a required carve-out out altogether. Nobody catches a missing clause in a generated document, because a gap looks exactly like a complete draft until it matters.
A clause-assembly drafter avoids this by construction. AI Legal Drafting in 99 Data Rooms selects vetted England and Wales clauses by ID based on your answers, who the parties are, the purpose, and the term, then assembles them into a document. It never invents legal wording. Every clause has already been reviewed, so the same answers reliably produce the same trusted result every time, which is exactly the argument we make in full in assembled clauses versus invented ones.
From Thursday's meeting to a signed NDA
Open the Mutual NDA template, sitting in the Protect IP group of the template library, or describe the situation in plain words: NDA with a possible co-founder, mutual, 24 months. The assistant asks who the parties are, the purpose, and how long confidentiality should run, then fills the template and saves the draft in a couple of minutes, free to keep on any tier.
Read it before you send it. It is a strong starting point, not a finished contract, and anything with real risk riding on it deserves a human read first.
Share the draft as a tracked, revocable link rather than an email attachment that copies itself indefinitely. On Business and Enterprise tiers you can gate it so a viewer has to accept the NDA before seeing anything else, and every tier can require a verified email and a one-time code. Page-by-page analytics tell you whether the other founder actually read the confidentiality term rather than skimming to the signature block. When both sides are ready, send it for signature in the browser: the finished PDF carries an audit certificate recording each signer's IP, intent to sign, timestamps, and a SHA-256 fingerprint. Electronic signatures are admissible for most commercial documents in England and Wales, though deeds and land transfers carry extra requirements. This is general information, not legal advice. Keep the signed NDA and its term end date in the same place as everything else, which is the gap our guide on contract renewal management covers for agreements with a real expiry.
Why a flat price actually matters for something this routine
NDAs are not a rare event for most founders. A busy fundraising quarter can mean signing one before every serious investor call, every potential hire with early access to the deck, and every partner conversation that goes beyond a first pitch. Charged per document, that adds up fast, and it quietly discourages people from bothering with an NDA at all when the meeting feels low-stakes. A flat monthly plan removes that friction entirely. Drafting the tenth NDA of the quarter costs the same as drafting the first, so there is no incentive to skip the paperwork on the meetings that feel routine right up until they are not.
That matters because the meetings that feel routine are exactly where sensitive figures tend to slip out. A five-minute chat before a call is when a founder mentions revenue, a churn number, or a term sheet detail that should have waited for signed paper. Removing the cost friction removes the excuse.
What to check before you send it
Before either founder signs, check four things: both parties are named correctly, the permitted purpose actually describes what you are about to discuss, the term is reasonable for how sensitive the material is, and the carve-outs are all present rather than trimmed out for brevity. A mutual NDA missing even one of the standard carve-outs stops being mutual in practice.
Frequently asked questions
Is a free NDA download actually the cheapest option?
Only if nothing goes wrong with it. A free download with a missing carve-out or vague purpose clause can cost far more in a stalled negotiation than the small saving on the day. A clause-assembly drafter bundled into a flat plan produces a checked document at no extra per-document cost.
Can I just ask a chatbot to draft the NDA instead?
You can, but treat the result as an unreviewed first pass. The wording is generated fresh each time with no fixed source behind it, so a missing carve-out or a jurisdiction mismatch gives no visible warning. A vetted clause library avoids that specific risk by construction.
Does an assembled NDA cover both sides equally?
Yes, when it is genuinely mutual, every clause applies to both parties in the same way. If a template gives one side easier terms, it has quietly become a one-way NDA. Our one-way NDA guide covers the case where only one side is disclosing.
How much can I draft for free?
The free tier gives three rooms and twenty-five active links, forever, no card required, so gating and sharing a real document costs nothing. The AI drafter and e-signature start on Pro at £19 a month, and the monthly drafting allowance above that depends on your plan tier.
Is the drafted NDA legal advice?
No. It assembles vetted clauses into a strong starting point, not a legal opinion, and this article is general information, not legal advice. A genuinely high-stakes negotiation is worth a solicitor's read before you sign.
Does the drafter remember the NDA once it is signed?
Yes. The signed NDA, its term, and its survival period all live in the same room as the rest of your documents, rather than as a PDF nobody can find later. That matters most for a merger conversation, where the confidentiality obligation often needs to be checked again months after the original meeting.
Draft your NDA for free
Assemble a mutual NDA from vetted England and Wales clauses in minutes, then gate, track and sign it in the same place, all inside a flat-price plan with no per-document charge. The free tier is real: three rooms, twenty-five active links, forever, no card. Start for free before Thursday's meeting. If only one side of the conversation is disclosing anything sensitive, drafting a one-way NDA with AI is the better fit, and if the meeting is really about bringing on a self-employed contractor, drafting a consultancy agreement with AI covers the document that usually follows.
Sources
- Electronic signatures, validity and witnessing of deeds in England and Wales: Law Commission, Electronic execution of documents (2019), https://lawcom.gov.uk/project/electronic-execution-of-documents/ ; HM Land Registry Practice Guide 82, https://www.gov.uk/government/publications/electronic-signatures-accepted-by-hm-land-registry-pg82
- Copyright first ownership (the IP point that an NDA does not transfer): Copyright, Designs and Patents Act 1988, s.11, https://www.legislation.gov.uk/ukpga/1988/48/section/11