The colleague who never misses an early warning.an early warning, a time bar, a compensation event, a Disallowed Cost.
ChatNEC is a working partner for the people who run NEC contracts. It knows the contract to the page, reads your documents, and hands you the file you need to send.
Start using ChatNEC →In pilot with commercial teams on live UK NEC contracts.
- Direct labour verified against the approved timesheets.£236,410
- Agency markup awaiting the supplier invoice.£61,900
- Line 14 claims 172 hours. The approved timesheets support 141.£48,120
01 · The Assistant
That's not a variation. It's a compensation event.
Ask anything about your NEC contract and get the answer a good colleague would give: the clause, the timescales, and the risk if you sit on it. Every answer is cited to the page of published NEC4 commentaries.
Four guided tools draft the documents themselves. Early warnings, compensation events, Z clauses and full contract reviews, formatted for CEMAR, Sypro, Aconex, email or letter.
Choose what you need right now
More tools are on the way.
02 · The Auditor
Every line. Every timesheet. Every month.
Drop in the payment application and whatever substantiation came with it, unsorted is fine. The Auditor verifies the costs line by line against the evidence, recomputes the arithmetic, and chases the documents that are missing.
It returns a findings report with drafted requests ready for you to send. The burden of proof stays where the contract puts it: with the claim.
Send me the March timesheet export. Line 9 claims 214 site hours and the application alone cannot support them.
03 · How it works
Ask or attach
Bring a question, a clause, or a folder of documents. Don't sort, rename or convert anything.
It works the contract
Clauses checked, arithmetic recomputed, deadlines identified, missing evidence chased.
Take away the file
A notification, a Z clause, a review, a findings report. Ready to send, with the reasoning attached.
04 · Trust
Yours, and only yours.
A private instance
Your own isolated workspace behind your own login. No shared anything.
Servers in the UK
Your documents stay on servers in the UK, encrypted in transit.
Never used for training
Processed by Anthropic's Claude under commercial terms. Anthropic is SOC 2 Type II certified and does not train on your data.
Drafts until you send
Nothing leaves without you. Findings, notifications and requests stay drafts until you choose to send them.
05 · FAQ
How do I get access?
ChatNEC is currently invitation-only while in pilot. Email founders@chatnec.com and say what you run and under which form of contract.
What does it cost?
Pilot terms are agreed per team. Ask.
Where does my data live?
In your own private instance on servers in the UK, encrypted in transit, behind your own login.
Is my data used to train AI models?
No. Documents are processed by Anthropic's Claude under commercial terms. Anthropic is SOC 2 Type II certified and does not train on your data.