Rex AI for subcontractors
Check the bid against the request.Before they do.
Rex AI sits on your draft. He reads the prime contractor's request, your quote, and what you have entered, then tells you what still does not match. That is how the bid has the best chance of being the one they can actually award.
Invited bidding stays free. Rex AI is a subscription you can choose.
Fill from quote
The numbers are already in the PDF.Rex AI puts them on the form.
If the prime contractor issued bid expectations, or wrote the work into the description, Rex AI reads your attachment against that request and fills the matching areas on the form. You apply what is right. Nothing overwrites the form until you say so.
- Matches the quote to their bid expectations and to what they wrote in the description.
- Maps each find to the line it belongs on, so you can see what came from where.
- Leaves gaps visible. If traffic control is not on the quote, he does not invent a number.
You can fill this form yourself. If you already have a quote, Rex can read it and look the bid over before you send.
2 of 3 bid expectations answered · 1 required still blank
Accept a finding to put it on the form below. You can still edit after.
Fill from quote againRex found 2 answers
Accept all foundMobilization
$12,400.00
Harbour-St-Quote.pdf, page 2. Lump sum, not in the $176,400 total.
Use thisTraffic control hours
$102.50 /Hour × 80 Hour = $8,200.00
Harbour-St-Quote.pdf, page 3. Unit rate against Parker Civil's quantity.
Use thisExtra / provisional lines from your quote
Night work standby · $3,200.00 (conditional)
Priced in the quote. Not one of their bid expectations.
Add to bidYour own words from the quote
Scope notes
Includes restoration to existing grade. Testing excluded; reason on the form.
Use thisWhen these look right, check the bid before you send.
REX is for analysis only. All decisions are yours.
Check my bid
Another member of your team.Checking the bid with you.
He analyzes your bid against the prime contractor's request, then helps you with the final pricing strategy: what to include, what to exclude, and what still needs a line before you send.
- A short look at the draft, then Focus: the one or two things worth your attention before send.
- How this sits against the original request: gaps, extras, excludes, a unit that does not match, timing that misses the work window.
- What the prime will see: how complete the package looks, what they already know about you, and the questions they are likely to ask.
- Before you hit send: concrete to-dos on this draft only. Named to the request or a file.
You can fill this form yourself. If you already have a quote, Rex can read it and look the bid over before you send.
2 of 3 bid expectations answered · 1 required still blank
Rex already looked this draft over. Check again after you change the form.
Check againMy current look at your bid
Coverage is close. Mobilization is in. One gap left that Parker Civil will ask about if you send it like this.
Focus
Traffic control is hours on the request. The quote priced a lump sum.
The quote starts after their Apr 12 to May 21 work window.
Keep reading below.
How this sits against Parker Civil's scope
They asked for traffic control in hours. The quote is a lump sum. That unit mismatch looks like the expectation was skipped.
The request work window is Apr 12 to May 21. The quote shows a June start. Timing like that is a callback before they even open the price.
What Parker Civil will see
Your history with Parker Civil
A few things I'd double-check
Before you hit send
REX is for analysis only. All decisions are yours.
Talk to Rex AI
Ask about this request.Or go deeper on the bid.
Chat on the draft is for the job in front of you. Did they ask for traffic control as its own line? Does the testing exclusion come back? He can dig further into how this bid sits against the original scope. If the files do not have the answer, he helps you get a message out to the prime.
- The request, the bid expectations, their documents, your draft, and your history with this company.
- He can go back through the bid against the original scope when you want a deeper pass.
- If he cannot answer from the files, he helps you send that question to the prime from the job.
Talk to RexAI
Send this to Parker Civil in Job discussion
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SendFAQ
How bidders use Rex AI.
What is Rex in KNTRCTR?
Rex is KNTRCTR's AI bid intelligence assistant. It helps your team review bid submissions faster by organizing pricing signals, scope coverage, attachment findings, and past-work context into one structured read.
Rex is not a separate tool you have to bolt on. It is built into the tender review flow where award decisions already happen.
Can I exclude a bid expectation when submitting a bid?
Job posters can mark individual bid expectations as Must Answer. Those require a direct answer or Exclude from bid with a reason before submit.
Optional expectations can be left blank. Bidders can still exclude them with a reason (up to 200 characters) if they are out of scope.
If a bidder skips an optional row, Rex AI may fill it from attachments when the poster runs a deep dive. Answering in-app where possible still gives the most accurate comparison.
If a Must Answer response or a required exclusion reason is missing, KNTRCTR blocks submission until it is fixed.
Does Rex replace estimators or project managers?
No. Rex is an assistant for structured analysis, not an autopilot that awards work.
Your team remains accountable for final decisions, trade-offs, and commercial judgment.
Do subcontractors need to pay?
No. Invited and existing subcontractors can bid for free. They can create a free account and respond to your jobs at no cost.
If they subscribe, they get Rex AI on the draft, can share past job experience and qualifications, get discovered on the Network, and bid on public jobs. Subscription is optional for bidders.
Lead contractors subscribe to post jobs and build their network; bidders can participate for free when invited.
A complete bid is the one they can pick.Rex AI is the second set of eyes.
Subscribe if you want that check on every invited job. Skip it if you do not. Invited bidding stays free. Analysis only. You still hit send.