WallEye vs T2D2: An Honest Comparison
If you’re a QEWIevaluating AI-assisted tools for facade inspection work, you will run into T2D2. You should — it’s a credible, mature product. This page is written by WallEye, so read it with that in mind. We’ve tried to keep it factual: what each tool actually does, where T2D2 is genuinely the better choice, and where WallEye is.
The short version: T2D2 detects damage across many building types and materials. WallEye is built end-to-end for one job — NYC Local Law 11 / FISP filings.Other tools detect damage; WallEye’s job is to get you from drone photos to a QEWI-stamped, DOB-compliant FISP report, with an audit trail tied to a real license number on every annotation. It’s built for the working QEWI, not the enterprise AEC firm.
What T2D2 Is
T2D2 (t2d2.ai) spun out of Thornton Tomasetti’s CORE studio in 2021, led by Badri Hiriyur, Ph.D. It’s a browser-based SaaS “AI Damage Detector” trained on hundreds of thousands of forensic images. Verified capabilities include 80+ damage types across 8+ building materials, photo/mobile/drone ingestion, orthomosaic generation, geotagging, 3D models, and custom reporting. It has been used on NYC brick and stone facades, Florida stucco towers, Maine stone bridges, and California industrial roofs.
It is a serious tool backed by one of the best-known structural engineering firms in the country. Nothing below argues otherwise.
Capability Comparison
This table reflects each product’s public materials as of mid-2026. Where we couldn’t verify a claim about T2D2, we say “not advertised” rather than “no.”
| Capability | T2D2 | WallEye |
|---|---|---|
| AI-assisted defect detection | Yes — 80+ damage types, 8+ materials | Yes — NYC facade defects, every suggestion QEWI-reviewed |
| Multi-structure scope (bridges, roofs, stucco) | Yes | No — NYC facades only |
| Orthomosaics, geotagging, 3D models | Yes | No — GPS-grid facade schematic |
| NYC LL11 / FISP-native workflow | Partial — used on NYC facades, not FISP-specific | Yes |
| Unsafe / SWARMP / Maintenance severity vocabulary | Not advertised | Yes — required field on every defect |
| Audit trail tied to a QEWI license number | Not advertised | Yes |
| DOB-compliant FISP export out of the box | Not advertised | Yes |
| Published pricing | No — free trial, then custom quote | Yes — $249/report or $4,800/cycle |
| Enterprise / large-firm fit | High | Medium |
| Solo QEWI / small-firm fit | Lower — enterprise-positioned | High |
When T2D2 Is the Right Choice
Choose T2D2 over WallEye if any of these describe your practice:
- Your portfolio isn’t just NYC facades.If you inspect bridges, roofs, water treatment structures, or stucco towers outside New York, T2D2’s multi-material, multi-structure scope is exactly what it’s built for. WallEye does none of that.
- You need orthomosaics or 3D deliverables.T2D2 generates them. WallEye produces a GPS-grid facade schematic — sufficient for a FISP filing, not a substitute for photogrammetry.
- You want years of production history behind the model. T2D2 has been training on forensic imagery since 2021 at a scale WallEye, a newer product, has not matched. If AI maturity is your deciding criterion, T2D2 wins it.
- You’re an enterprise AEC firm.T2D2’s custom pricing, Thornton Tomasetti pedigree, and horizontal scope fit large-firm procurement. WallEye is built for a different buyer.
When WallEye Wins
If your work is NYC LL11 filings, the question isn’t which tool detects more damage types — it’s which tool gets a stamped report into DOB NOW: Safety with less of your time spent on photo review and paperwork.
- FISP-native workflow.A horizontal damage detector hands you detections; you still map them to Unsafe / SWARMP / Maintenance and build the filing yourself. WallEye starts and ends inside the FISP workflow — severity classification is a required field, not a spreadsheet step after export.
- Audit trail tied to your license.Every annotation in WallEye — accepted, edited, or rejected — is recorded against the reviewing QEWI’s license number. When your stamp is on the filing, you can show exactly what you reviewed and what you changed.
- DOB-compliant export.The output is a FISP report formatted for upload to DOB NOW: Safety, not a generic inspection PDF you reformat to the DOB’s requirements.
- Published pricing. $249 per report pay-as-you-go, $4,800 for a cycle plan. No discovery call, no custom quote. If you run 20 buildings a cycle, you can price the tool into your fee structure today.
There’s a structural point worth naming too: T2D2 is a Thornton Tomasetti spin-out, and Thornton Tomasetti is itself a major NYC QEWI firm. Some engineers are comfortable buying inspection software with that lineage; others prefer a vendor with no stake in the inspection market. WallEye is neutral — we don’t compete for your clients.
The Claim We Won’t Make
You’ll notice this page never says WallEye’s AI is better than T2D2’s. It probably isn’t — they have a multi-year head start on training data, and pretending otherwise would fail the skepticism test any working engineer applies to vendor copy. What we’d point out instead: in both tools, the AI output is a preliminary suggestion until a licensed professional reviews it. The bottleneck in LL11 work was never detection quality alone — it’s the 40–80 hours of photo review, classification, and report assembly per building. WallEye is built to compress that specific stretch of work, for this specific filing.
Frequently Asked Questions
Is WallEye’s AI better than T2D2’s?
We don’t claim that. T2D2 has been training on forensic imagery for years and supports 80+ damage types across 8+ materials. The difference between the tools is the workflow, not the model: WallEye is built around the FISP filing a QEWI has to produce. In both tools, every AI suggestion requires independent review by the licensed professional before it goes anywhere near a filing.
Does T2D2 produce a FISP report?
T2D2 offers custom reporting, but it is positioned as a horizontal building-envelope inspection tool, not a FISP product. Based on its public materials, mapping detections to the Unsafe / SWARMP / Maintenance classifications and assembling a DOB-compliant filing remains work the engineer does outside the tool. WallEye’s review workflow and export are built around that filing from the start.
What does each tool cost?
T2D2 does not publish pricing — free trials, then custom pricing for professional and enterprise tiers. WallEye publishes its pricing: $249 per report pay-as-you-go, or $4,800 for a cycle plan. If you need a number to put in front of a board or a budget, you can read WallEye’s off the pricing page.
Does WallEye do orthomosaics or 3D models?
No. T2D2 generates orthomosaics, geotagged imagery, and 3D models; WallEye does not. WallEye’s current schematic is a GPS-grid facade layout. If your engagement requires a 3D deliverable, T2D2 or a dedicated photogrammetry tool is the right call.
Does either tool replace the QEWI?
No, and be skeptical of any tool that implies it does. Under FISP, a Qualified Exterior Wall Inspector — a licensed PE or RA — performs the inspection, makes every classification judgment, and stamps the filing. Both tools accelerate parts of that work. Neither replaces the license or the judgment behind it.
WallEyeis in early access. If your practice is NYC LL11 filings and you want the photo-review-to-filing step compressed, join the waitlist — early access users get direct input on the review workflow before v1.