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Thesys vs Stacktree

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

Thesys compared with Stacktree
DetailThesys logo ThesysStacktree logo Stacktree
What it doesThe open standard for Generative UI Send client work as a link, not an attachment
StageStartup Not given
Founded2024 Not given
Based inUS GB
Pricing modelNot given Freemium
PricingFree ($0/mo) with 3K API calls/month; Build ($49/mo) with 25K API calls/month; Grow ($499/mo) with 500K API calls/month; Scale (Custom). API calls included; LLM tokens billed separately at provider rates. Reports API: 100 pages free per month, then $0.01 per page. Free: 3 pages; Solo: $19/month (25 pages, 1 custom domain, 1 client space); Studio: $79/month (unlimited pages, 10 custom domains, 10 client spaces); Firm: $249/month (unlimited pages, 25 custom domains, unlimited client spaces); Enterprise: billed annually, custom pricing.
Key features
  • Interactive charts and visualizations
  • Dynamic dashboard generation
  • Real-time UI adaptation
  • Reports and slides generation
  • Multiple LLM support
  • OpenUI Cloud with API key management
  • Style customizations
  • Replace pages in place without changing the URL
  • Works with ChatGPT, Claude, and other AI agents
  • Client spaces with dedicated portals per client
  • Passcode and email domain gates
  • Custom domains on your agency's domain
  • Version history with rollback capability
What makes it different
  • Open standard for Generative UI instead of proprietary solution
  • No markup on LLM pricing - pay provider rates directly
  • Zero data retention on paid plans
  • Interfaces adapt to context and user intent in real-time
  • Half of published pages change after being sent, so replace-in-place saves resending
  • Works as an MCP server with Claude, ChatGPT and other agents
  • Agency-focused with dedicated client portals and multiple custom domains
  • Analytics show engagement depth, not just opens
Community votes00
DR (Domain Rating by Ahrefs)60 −3 (down) since last check53 no change since last check
Trust Flow (Majestic)279
Citation Flow (Majestic)4034
Referring domains (Majestic)876245

5 details filled in for both companies.

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