OpenTakeoff vs STACK
OpenTakeoff
opentakeoff.kentucky-ai.comSTACK
stackct.comSide by side
| Figure | OpenTakeoff | STACK |
|---|---|---|
| Price from | Free | $49/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 8 |
| Spec score · Construction Takeoff Software | 8.6 (#11) | 8.8 (#9) |
| Company headquarters | LinkedIn lists Shelbyville, Kentucky as Kentucky AI's headquarters. | The company is headquartered in Cincinnati, Ohio, United States. |
| Company size | LinkedIn lists Kentucky AI as having 2–10 employees. | Crunchbase places STACK in the 101–250 employee range. |
| Headquarters | Shelbyville, Kentucky, United States | Cincinnati, Ohio, USA |
| Support | Users can contact Michael Edlin by email or open a support issue; the policy notes that GitHub issues are public. | Customers receive help-center content, webinars, in-app chat, phone and email account-manager support. |
| What it does | OpenTakeoff measures construction-plan quantities for human estimators in a browser canvas and for AI agents through MCP. | STACK is cloud construction software covering plan evaluation, digital takeoff, estimating, bid management, field collaboration and project closeout. |
Plans
STACK
- FreeFree
- PremiumPriced on request
- ProPriced on request
- Build & Operate$49 a month
- Takeoff & Estimate$299 a month
- Full STACK Platform$348 a month
- Build & Operate$599 a year
- Takeoff & Estimate$2,599 a year
In their own words
OpenTakeoff
OpenTakeoff measures quantities from building plans through a browser canvas for people and an MCP server for AI agents. Its browser app opens PDF, PNG, JPEG and ZIP plan files, processing them locally without an account or plan upload. Measurements include square feet, square yards, linear feet and each, with waste-adjusted order quantities, supporting-material lists and roll-goods cuts. Exports include CSV, Excel, JSON, PDF and DXF. Drawing OCR is supported. The MCP server runs through `npx -y opentakeoff-mcp` and works with Claude Code, Claude Desktop, Cursor and other stdio MCP clients; agent measurements need a person’s approval in the browser canvas. The default workspace keeps plans, measurements, annotations, materials and project settings in browser storage on the device. Optional connections include Google Drive, Microsoft 365, configured AI providers and a scanned-schedule service that can send a selected image to Google Gemini. OpenTakeoff is free, with no account required, and Apache-2.0 licensed. It runs on web, Linux, macOS and Windows, with an API and self-hosting options. One-Click Area is temporarily gated, and the default MCP build does not register room-detection verbs.
STACK
STACK is project software for working with plan pages, measurements and cost estimation. Its Free plan supports one active project per month, up to 300 plan pages, 50 measurements per project and one viewer seat. Premium and Pro list unlimited projects, plan pages, measurements and viewer seats, though neither plan has a listed price. STACK is freemium, with a free plan at free and a 7-day trial. It is available on Android, iOS, web and Windows. The company was founded in 2011 and is headquartered in Cincinnati, Ohio, USA. The listed plan details make the free tier’s project, page, measurement and seat allowances explicit; the two paid tiers specify the same unlimited allowances for those categories. Cost estimation is also listed as a capability.