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Head-to-head · 3D Architecture Software

OpenBuildings Designer vs Bonsai

  • Updated Oct 2026
  • Both researched from official sources
  • 1 check side by side
Higher score OpenBuildings Designer #5 in 3D Architecture Software 8.6/10 Paid ✓ 0 of 3 features Visit OpenBuildings
Bonsai #7 in 3D Architecture Software 7.9/10 Free plan Free plan✓ 0 of 3 features Visit Bonsai

OpenBuildings Designer leads on 0 checks, Bonsai on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOpenBuildings Designer · 8.6/10
  • Free planonly Bonsai

OpenBuildings Designer scores higher on our rubric for 3d architecture software: 8.6 against 7.9 out of 10; our editors rank them #5 and #7.

Bonsai offers free plan; OpenBuildings Designer doesn't.

OpenBuildings Designer is the better fit for large multidisciplinary projects needing analysis. Bonsai is the better fit for BIM users prioritizing free, open IFC authoring.

  • OpenBuildings Designer fits best

    Large multidisciplinary projects needing analysis

  • Bonsai fits best

    BIM users prioritizing free, open IFC authoring

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature OpenBuildings Designer 8.6/10 Visit ↗ Bonsai 7.9/10 Visit ↗
At a glance
Editor score 8.6 7.9
Ranking #5 in 3D Architecture Software #7 in 3D Architecture Software
Best for Large multidisciplinary projects needing analysis BIM users prioritizing free, open IFC authoring
Pricing model Paid Free
Starting price $3,844/yr Free plan
Free plan — ✓ (best)
Free trial — —
Deployment Cloud, Desktop Desktop
Platforms Windows Windows, macOS, Linux
Support Phone, Tickets, Community, Docs · 24/7 Community, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market
Features OpenBuildings Designer 0/3 · Bonsai 0/3
BIM tools Not checked yet Not checked yet
2D floor plans Not checked yet Not checked yet
Team collaboration Not checked yet Not checked yet
Specs
Rendering Not checked yet Not checked yet
Supported platforms Not checked yet Not checked yet
File formats Not checked yet Not checked yet
Our review
Pros
  • Covers architectural, structural, mechanical, and electrical modeling
  • Combines clash detection, quantities, documentation, and energy analysis
  • Exchanges IFC, COBie, DWG, RFA, and SketchUp data
  • Authors and explores IFC models natively within Blender.
  • Covers drawings, structural and MEP workflows, scheduling, and quantities.
  • Includes clash detection and facility-management data workflows.
Cons
  • Windows-only application with no mobile access
  • Annual license is listed at $3,844 per license
  • Breadth may exceed the needs of single-discipline projects
  • Desktop-only deployment has no mobile access.
  • Requires Blender as its host application.
  • Support is through community and documentation channels.
Our verdict

OpenBuildings Designer is multidisciplinary BIM software for architects, structural engineers, mechanical and electrical designers, and construction teams. Its Windows application supports 3D building modeling, coordinated drawings,…

Read the review →

Bonsai brings BIM authoring into Blender as a free, open-source desktop add-on built around IFC as its native data structure. It is aimed at architects, engineers, construction professionals, and other AEC users working in OpenBIM…

Read the review →
  1. OpenBuildings Designer3D Architecture Software 8.6Paid
  2. Bonsai3D Architecture Software 7.9Free plan

Strengths and trade-offs

  • OpenBuildings Designer — where it wins

    • Covers architectural, structural, mechanical, and electrical modeling
    • Combines clash detection, quantities, documentation, and energy analysis
    • Exchanges IFC, COBie, DWG, RFA, and SketchUp data

    Where it doesn't

    • Windows-only application with no mobile access
    • Annual license is listed at $3,844 per license
    • Breadth may exceed the needs of single-discipline projects

  • Bonsai — where it wins

    • Authors and explores IFC models natively within Blender.
    • Covers drawings, structural and MEP workflows, scheduling, and quantities.
    • Includes clash detection and facility-management data workflows.

    Where it doesn't

    • Desktop-only deployment has no mobile access.
    • Requires Blender as its host application.
    • Support is through community and documentation channels.

More comparisons

All 3D architecture software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update