AI Tools for Architects
Small Tiger Group builds applied AI tools for architects and AEC firms. Built by a licensed architect and a deep-tech engineer -- tools we use ourselves on real construction sets, free to use in your browser.
Strategy
Where AI actually fits in your practice, and where it doesn't. Roadmap work for firms figuring out their AI position — tool selection, pilot scoping, build-vs-buy. Short engagements. Defensible plans, not slide decks.
How it works →Staff
Embedded engineers and architects on your team for the duration of a project. We work inside your repo and your standards. We've shipped agent-callable CLIs and MCP servers under our own brand — we bring that to your roadmap.
How it works →Tools
Our own products, used today on construction sets. The proof that we ship. Each one has a public domain you can visit and use right now.
See our tools →Selected tools
bim-cli
bimcli.com ↗One install, every AEC workflow. An agent-callable dispatcher that connects AI to Revit, Blender, Rhino, building code, zoning, flood data, and Google Workspace.
Case study →PDF Diff Tool
pdfdifftool.com ↗Side-by-side revision comparison for architectural drawings. Pixel diff plus word-level text diff, synchronized pan/zoom, annotated PDF export. Runs entirely in the browser.
Case study →PDF Markup Tool
pdfmarkuptool.com ↗Construction takeoff on PDF drawings. Set a scale, measure lengths and areas, export to CSV. Real-time multi-user collaboration.
Case study →PDF Fill & Sign
pdffillandsign.com ↗Client-side PDF form fill and signature. Load, annotate, export — no upload, no account, nothing leaves your browser.
Case study →Built by Libo (deep-tech engineering) and Pyline (AEC domain & operations). The combination is why our work fits real workflows.
About us →Frequently asked questions
- What AI tools do you make for architects?
- bim-cli (agent-callable AEC workflow CLI), PDF Diff Tool (revision comparison), PDF Markup Tool (redline and measure), and PDF Fill & Sign (lien waivers and AIA forms). All free for the core use case, no account required.
- Who builds these tools?
- Libo (deep-tech engineering, ex-Meta) and Pyline (licensed architect, ex-KPF), based in New York. We build tools we use ourselves on real construction sets.
- Do my files stay private?
- Yes. All three PDF tools run entirely in your browser -- files are never uploaded to any server. bim-cli runs locally on your machine.
- Do you do consulting?
- Yes. We advise AEC firms on AI strategy and embed engineers to build it. Short engagements, defensible plans. Email hello@smalltigergroup.com.
- Which tool for comparing drawing revisions?
- PDF Diff Tool (pdfdifftool.com) -- side-by-side pixel diff plus word-level text diff, synchronized pan/zoom, annotated PDF export. For adding redline comments to one drawing, use PDF Markup Tool.