Quoting.ai vs STACK
Verified against the live products on 2026-07-05.
STACK is an established cloud construction platform spanning plan management, multi-trade takeoff, estimating with cost data, and field tools, at public pricing of $249 to $299 per user per month with AI takeoff features layered on as paid add-ons. Quoting.ai Takeoff is narrower and deeper: Division 8 doors and windows read from the full set with 4 Eyes cross-checking schedule against plan symbols against legend. STACK is the safer one-vendor bid-to-field choice across many trades; Quoting.ai is the specialist where a missed opening costs installed money and the schedule is the document of record.
Pick Quoting.ai when
- Your scope is doors and windows on dense multifamily or commercial sets, and reconciling schedule, plans, and legend is the job, not an accelerator.
- You want AI reading the full plan set as the default workflow, not autocount add-ons purchased on top of a roughly $3,000 per seat per year platform.
- Submittal-ready output matters: schedule attributes and apartment-based numbering come through instead of generic symbol detections.
Pick STACK when
- You are a multi-trade sub or GC who needs takeoff and estimating with cost data, assemblies, and proposals across concrete, roofing, drywall, electrical, and more, today.
- You value a mature vendor with a large review base (around 4.4 on G2, 4.5 on Capterra), transparent pricing, and a self-serve 7-day trial.
- You want one platform from bid through field execution with an existing integration ecosystem.
What does AI-assisted mean at STACK versus AI-native here?
STACK's AI features, FloorPlan detection and autocounts, accelerate a human-driven takeoff and cost extra on top of the platform seat. That is a legitimate design: their platform serves thirteen-plus trades and AI assists where it can generalize. Quoting.ai flips the default for two trades: the system reads the whole set first, produces the counts and the discrepancy list, and the human reviews. Neither is universally right. The question is whether Division 8 is your margin or your sideline.
Does STACK catch missed openings?
STACK advertises symbol search and autocount; we found no advertised cross-verification comparable to 4 Eyes, which counts schedule, plan symbols, and legend independently and surfaces every disagreement. On their platform, accuracy assurance rests on the estimator's review, which is exactly the labor the tool was meant to reduce.
Common questions
Is STACK's pricing really public?
Yes: Takeoff and Estimate at $249 and $299 per user per month billed annually as of July 2026, with AI features as add-ons and a free trial. That transparency is genuinely to their credit in this market.
We already run STACK for other trades. Why add anything?
Keep it. Run one dense Division 8 set through Quoting.ai and compare the discrepancy list against your STACK count. If 4 Eyes finds nothing, you lost an hour. If it finds an opening, you found real money.
Settle it with your own work
Demos flatter every tool. Your real RFQs and your real plan sets are the honest benchmark.