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About

Callout is an AI-powered SaaS that performs first-pass construction drawing reviews against building codes. Professional Engineers and Architects upload PDF drawing sets, select from 33+ supported codes (IMC, IBC, ASHRAE, NFPA, NEC, IPC, ASCE, ACI, AISC, and more), and receive structured findings with severity ratings, exact code section citations, and suggested resolutions in under 60 seconds. Key features: multi-discipline review across 7 engineering disciplines in a single pass, PE calibration that adapts to each engineer's judgment over time, firm standards library for custom requirements, jurisdiction amendment uploads for local code checking, confidence ratings on every finding, and full review history with CSV, Excel, and PDF export. Credit-based pricing starting at $0.13 per sheet. No subscriptions, no seat licenses. 50 free credits on signup. Built by a licensed Mechanical PE.

About

Piper is the AI operating system for preconstruction, built for general contractors' pursuit and estimating teams. Piper connects drawings, specifications, addenda, quotes, estimates and company knowledge so teams can generate scopes, level bids and review risk — with every finding linked back to the drawing, spec clause or addendum it came from. Scope Generation: turn drawings, specifications, addenda and company standards into source-backed trade scopes, so you know exactly what you are asking each trade to carry. Bid Leveling: compare subcontractor bids against the intended scope, so the low number does not hide an expensive gap. Final Bid Review: review the estimate against the project behind it, and focus senior attention on what still deserves judgment. Survey: turn your company's experience into a repeatable survey that captures what the team learns on every project. Piper is not a takeoff or estimating calculator, and it does not replace estimator judgment.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Licensed Professional Engineers, Architects, Plan Reviewers, and AEC firms that review construction drawings for building code compliance.

Audience

General contractors — preconstruction, pursuit and estimating teams bidding commercial construction projects

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

$8
Pay-per-use credits. No subscription required. Credits never expire.

Starter: 100 credits for $8
Professional: 700 credits for $49
Studio: 1,500 credits for $99

Reviews cost 2-4 credits per sheet depending on review depth (Quick, Standard, or Thorough). 50 free credits included on signup, no credit card required.
Free Version Not Supported
Free Trial Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Not Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Callout
Founded: 2026
United States
www.callout.app

Company Information

Piper
United States
piper-ai.com

Alternatives

Alternatives

Gnosis

Gnosis

Gnosis Limited
DESTINI Estimator

DESTINI Estimator

Beck Technology

Categories

AI Construction Supported
AI Tools Supported

Categories

AI Construction Supported
Preconstruction Supported

Integrations

No info available.

Integrations

No info available.
Claim Callout and update features and information
Claim Callout and update features and information
Claim Piper and update features and information
Claim Piper and update features and information