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Clash Nexus AI is designed to review construction drawing PDFs across sheets and disciplines, then show people potential issues for verification. Founder and CEO Akam Pachachi says the platform can identify drawing relationships, flag coordination concerns, track handoffs and compare revisions without requiring a BIM model. Those are company-described capabilities, not independently validated performance claims.
Why review a drawing set as a whole?
Construction teams price work, buy it out and build from issued drawing sets. A reviewer can study each page carefully and still miss a conflict that only becomes visible across disciplines—for example, mechanical ductwork on one sheet and a structural beam on another. Other problems may be contradictions between sheets, missing schedule details, scope assigned “by others,” or changes that are hard to spot between revisions.
Pachachi describes a 200-sheet set as having just under 20,000 possible sheet-to-sheet pairs. That is a way of illustrating the number of potential relationships, not a measured industry statistic. His framing is that “A drawing set is a graph, not a pile of pages.”
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According to Pachachi’s September 29, 2026 founder account, a user starts with a complete PDF package, which may include architectural, structural, mechanical, electrical and plumbing (MEP), trade, and shop drawings. The platform identifies sheets, disciplines, floors, buildings and scope, then pairs sheets that should agree and checks for geometric clashes and other potential problems.
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The article describes several categories of findings:
- Geometric clashes between elements shown on different sheets.
- Contradictions between sheets or between drawings and specifications.
- Missing information, including schedule details.
- Constructability concerns and potential code signals.
- Scope and handoff notes that identify work assigned to others.
Each finding is described as pinned to a sheet and location, with drawing evidence, a severity assessment, likely impact and a recommended next step. Reviewers can accept or reject findings; the human review step matters because a flagged item is a candidate issue, not proof of a design error.
What happens after a finding is reviewed?
RFIs and project systems
Pachachi says reviewed findings can be sent as requests for information (RFIs) to Procore and Autodesk. He reports those integrations as live. The account does not establish that Clash Nexus AI participates in a particular partner, referral or commission program.
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Scope handoffs
The platform’s Scope Ledger is described as extracting handoff notes and organizing obligations, recipients, supporting drawing references and Procore bid-package coverage. This is intended to help preconstruction teams trace who is expected to provide or perform work rather than treating “by others” notes as isolated text.
Revision changes
For a new drawing issue, the revision workflow compares findings against the prior version and identifies items characterized as changed, resolved or new, along with affected RFIs or scope items. That can help a team focus its review on what changed, but the founder account does not quantify how reliably the system tracks revisions across different drawing formats or project conditions.
Does it require a BIM model?
No BIM model is required for the described workflow; its starting point is a PDF drawing package. Pachachi says this is meant to address the reality that some trade contractors and preconstruction teams have PDFs at bid time, before a coordinated model is available to them.
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He distinguishes PDF drawing review from model-based clash detection: the former examines relationships represented across drawings, while the latter works with model geometry. They address different layers of coordination and, in his words, “The two work best together.” Neither approach should be treated as a substitute for professional review of the project documents.
What evidence is available about detection performance?
The founder reports that about 80% of more than 30 interviewed industry executives identified preconstruction drawing clashes as a significant cost. This is a founder-reported interview result; no survey method or independent publication is provided, so it should not be read as a representative industry survey.
Clash Nexus AI also reports one company-run test on a 256-page package that flagged 65 design issues and five cross-page clashes for review. Pachachi explicitly characterizes this as a single test, not an industry benchmark. It does not establish independent accuracy, a false-positive rate, or how results will generalize to another project. As the founder puts it, “Your results will depend on your drawings.”
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The company’s article also says development took about eight months before launch on August 10, 2026. That timeline is a founder statement rather than an independently verified product history.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should teams check before using it?
The account is a product explanation by the company’s founder and CEO, who discloses that he leads Thelon Technologies Inc., the company behind Clash Nexus AI. Its feature descriptions, customer feedback, security statements, pricing and performance figures therefore come from an interested source. The article provides no independent accuracy study, controlled comparison or external benchmark.
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Pachachi says drawings are processed using AI, OCR and document-processing services under business or API terms; customer drawings are not authorized for training general-purpose models; projects are isolated to customer workspaces; and data is encrypted in transit and at rest. He also says the company is working toward SOC 2 readiness, but is not SOC 2 certified. These are company statements, not audit findings. Teams handling sensitive project documents should verify current contractual terms, retention practices, access controls and security documentation directly before uploading files.
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For teams evaluating any drawing-review workflow, useful questions include:
- Can the system process the issued PDFs and drawing conventions used on your projects?
- Are findings tied to precise, reviewable sheet evidence and locations?
- How are false positives, missed issues and reviewer decisions handled?
- Can accepted findings fit the team’s RFI, scope and revision processes?
- What data controls and independent security evidence are available for the intended deployment?
Availability and price
As reported by Pachachi on September 29, 2026, paid plans start at CA$499 per month, and the first full scan is free without a credit card. Pricing and trial offers can change; confirm current terms with the company before making a purchasing decision. The founder says the Ontario-based company serves construction teams across North America and names GC preconstruction, VDC/BIM, estimating, coordination, MEP and structural engineering, and trade contractors as intended users.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
