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Viaduct vs Geminus

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 Geminus
DetailViaduct logo ViaductGeminus logo Geminus
What it doesFree C4 modeling tool with an MCP server for software teams to share architecture context with AI development tools Physics-based AI that optimizes complex industrial systems in real time
StageNot given Not given
FoundedNot given Not given
Based inLT US
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
  • Physics-native optimization grounded in system physics
  • Multi-fidelity data fusion with real-time feeds
  • Guard railed autonomy with rigorous framework
  • Decision-making under uncertainty with calibrated confidence measures
  • Systems of surrogates for industrial-scale complex systems
  • Auditable workflows with complete chain of evidence
  • Cloud-native with on-premises support
  • REST API and OPC UA integration
  • SOC 2 Type II certified security
  • Deploys in weeks across entire operations
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
  • Deploys in weeks, not years or months
  • Physics-grounded reasoning beyond historical data patterns
  • Measurable outcomes from day one with $100M+ proven results
  • Uncertainty-aware recommendations operators can trust
  • Operates on mission-critical systems trusted by world's largest energy companies
Community votes00
DR (Domain Rating by Ahrefs)20 no change since last check30 no change since last check
Trust Flow (Majestic)1018
Citation Flow (Majestic)2830
Referring domains (Majestic)74141

5 details filled in for both companies.

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