Callout
Callout is a web-based AI construction drawing review service that scans PDF drawing sets against 33+ model codes and returns findings with exact section citations, severity levels, and confidence ratings for PE-led QA before stamping.
When a licensed PE needs a first pass on a multi-discipline PDF set, checking every sheet against IBC, IMC, NEC, and related standards by hand can take hours. Callout is offered as a browser-based workflow for that step: the vendor advertises support for more than 33 model codes and national standards and positions turnaround in seconds for a full drawing set (Callout, 2026).
You upload PDFs, select applicable codes and disciplines, and pick a review depth that trades thoroughness for credits per sheet. The pricing page lists Quick at 2 credits per sheet, Standard at 3, and Thorough at 4, and states that most reviews complete in under 60 seconds (Callout pricing page, 2026).
Teams can add plain-English firm standards and upload local jurisdiction amendment PDFs so checks run against office rules and adopted amendments together with the selected model codes. The product is described throughout the site as assistance only: every finding must be verified by a licensed PE before use in construction documents (Callout, 2026).
According to the security page, drawing PDFs are processed in memory and not retained on Callout servers after the review completes, with Anthropic's commercial API used under a zero-retention policy; review results and metadata are stored in the account, and payments are processed by Stripe (Callout security page, 2026).
Specifications
Pricing
Platforms
Used for
Used by
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Pros and cons
Pros
- Credit-based pricing with no seat licenses or monthly minimums on the public pricing page
- Broad code library spanning major US building, MEP, structural, and fire standards
- Explicit PE-verification scope on marketing and FAQ pages
- Vendor advertises sub-minute completion for many typical review runs
Cons
- PDF uploads only; no native Revit, DWG, or IFC upload path on the public site
- Security documentation places application data processing and storage in the United States
- Findings still need engineering judgment; poor legibility or unusual contexts add review risk
- Cost rises with sheet count and deeper review modes
Key features
Multi-discipline review: Architectural, structural, MEP, energy, and fire and life safety checks in a single uploaded session.
Exact code citations: Findings tie to specific sections, subsections, and editions of the selected model codes.
Firm Standards Library: Add up to 20 firm-specific requirements in plain English alongside adopted codes.
Jurisdiction amendments: Upload local amendment PDFs; the vendor states amendment text may be stored for reuse while originals are discarded.
Review depth: Quick (2 credits per sheet), Standard (3), or Thorough (4) with different comment density targets on the pricing page.
Severity and confidence: Findings use Critical through Advisory severity plus High, Medium, or Low confidence.
Calibration: Accept, reject, or edit findings so later runs better match your review habits.
History and export: Searchable review history plus CSV and Excel export for QA tracking.
Pricing
Signup credits (no card)
Free
50 credits at signup per vendor pricing page; verify on https://www.callout.app/pricing.
Starter Pack (100 credits)
$8.00
Indicative list price; credits never expire per vendor. Verify before purchase.
Studio Pack (1,500 credits)
$99.00
Indicative list price; verify on https://www.callout.app/pricing before purchase.
Frequently asked questions
Is Callout free to try?
- The pricing page states that new accounts receive 50 free credits with no credit card required. That is enough for several sheets at Standard depth or more at Quick depth, depending on how you run reviews. Confirm the current signup offer on https://www.callout.app/pricing before you rely on it for budgeting.
What file formats does Callout accept?
- Callout accepts PDF construction drawings only. The FAQ on the vendor site lists a 100 MB maximum upload size and up to 50 sheets per review session. Multi-file uploads and multi-sheet sets are supported as long as you stay within those limits.
Does Callout replace a licensed PE review?
- No. Callout is marketed as an AI-assisted first pass. The vendor states that all findings must be checked by a licensed professional engineer before use in construction documents. The PE still owns the stamp, the liability, and the judgment calls the tool cannot make.
How much does Callout cost per sheet?
- Credits are charged per sheet based on review depth: 2 credits for Quick, 3 for Standard, and 4 for Thorough, as shown on the pricing page. List packs include a 100-credit Starter at $8 and a 1,500-credit Studio at $99 at the time of this listing; divide credits by the per-sheet rate to estimate sheets per pack. Prices change, so verify on the vendor pricing page before purchase.
Are construction drawings stored by Callout after upload?
- The security page states that PDF drawing files are not stored on Callout servers after processing and that analysis runs in memory without writing drawings to disk. Anthropic's commercial API is described as zero-retention for that processing path. Review results and account metadata are stored; you can manage or delete history from the product as described in the app.
Which building codes does Callout check?
- Marketing materials cite 33+ model codes and national standards, including examples such as IBC, IMC, IPC, IECC, NEC, ASCE 7, ACI 318, AISC 360, and selected NFPA documents, with edition notes on the public site. You also select disciplines at review time. Local adoption still varies, so the vendor recommends uploading jurisdiction amendment PDFs when local rules differ from the base model code text.
How does Callout compare to a manual PE review?
- Callout targets repetitive checklist-style checks and cross-code passes at machine speed so a PE can focus on judgment-heavy items. The site compares manual PE review cost bands to credit-based first-pass economics, but it does not remove the need for a qualified engineer on the project. Use it as a triage layer, not a substitute for code interpretation where the AHJ or site context matters.