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Viaduct vs Kamai

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Viaduct compared with Kamai
DetailViaduct logo ViaductKamai logo Kamai
What it doesFree C4 modeling tool with an MCP server for software teams to share architecture context with AI development tools AI infrastructure for construction that turns blueprint chaos into structured data
StageNot given Startup
FoundedNot given 2024
Based inLT IL
Pricing modelFreemium Contact for pricing
PricingBrowser: Free with account. Desktop: €10 a month after 7-day free trial, one licence covers 3 machines. Enterprise: custom pricing. Not given
Key features
  • System context, container, component, and code diagrams
  • Live collaboration on models
  • MCP server for AI coding agents
  • Change sets for scoped agent work
  • Organization SSO
  • JSON import and export
  • OpenAPI contract export
  • Desktop app for macOS, Windows, Linux
  • AI assistant for model descriptions
  • Installable PWA
  • Geometric foundational models for blueprint analysis
  • Automatic extraction of areas, lengths, counts, volumes, and materials
  • Traceability back to sheet, layer, and geometry source
  • Visual verification with detections drawn back onto sheets
  • Takeoff API for programmatic access
  • MCP server integration for AI agents
  • Support for electrical, plumbing, and interior finishes divisions
  • Workflow support for estimation, RFI extraction, submittal review, and spec review
  • Construction tool integrations with Trimble, Fieldwire, and Contractor Foreman
What makes it different
  • Model elements exist once and appear on every level they belong to
  • Endpoints are real OpenAPI documents, not diagram labels
  • Desktop app keeps all data local and offline-capable
  • Free browser version with no paywall or feature limits
  • AI agents read and write architecture through MCP
  • No bespoke models or per-project retraining required
  • Full traceability with every quantity keyed back to source geometry
  • Same foundational models accessed through app, API, or MCP server
  • Built by industry experts with deep construction and AI backgrounds
Community votes00
DR (Domain Rating by Ahrefs)20 no change since last check34 no change since last check
Trust Flow (Majestic)1014
Citation Flow (Majestic)2823
Referring domains (Majestic)74127

5 details filled in for both companies.

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