Viaduct vs SunsetLint

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 SunsetLint
Detail	Viaduct	SunsetLint
What it does	Free C4 modeling tool with an MCP server for software teams to share architecture context with AI development tools	Find retiring AI model IDs in your code before the shutdown date
Stage	Not given	Not given
Founded	Not given	Not given
Based in	LT	IN
Pricing model	Freemium	Freemium
Pricing	Browser: Free with account. Desktop: €10 a month after 7-day free trial, one licence covers 3 machines. Enterprise: custom pricing.	Free: All public repositories and first 3 private repositories. Pro: $29 per month or $290 per year per GitHub account, includes every private repository, scans on every push, and pull request checks.
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	Scans code repositories for retiring AI model identifiers Reports file path, line number and shutdown date for each match Person-verified rules checked against provider notices Scans Python, TypeScript, JavaScript, Go, Java, Ruby, PHP, C# Uses literal strings and patterns, never sends code to AI Covers Anthropic, OpenAI, Bedrock, Vertex, Azure, Stripe, Twilio
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	Finds exact file and line numbers where retiring models are used, not just which models are retiring Verifies every rule against provider's official notice before shipping Free for all public repos and first 3 private repos Never modifies code, has read-only access to repositories
Community votes	0	0
DR (Domain Rating by Ahrefs)	3 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	28	0
Referring domains (Majestic)	74	0

6 details filled in for both companies.

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