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WhittleOS vs Thesys

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

WhittleOS compared with Thesys
DetailWhittleOS logo WhittleOSThesys logo Thesys
What it doesA startup decision engine for solo founders that kills weak ideas before they waste your months The open standard for Generative UI
StageNot given Startup
FoundedNot given 2024
Based inNot given US
Pricing modelPaid Not given
PricingStarter: $19 (2 credits); Founder Discovery Pass: $49 (6 credits); Multi-Market: $99 (15 credits); Working Founder: $149 (30 credits). Credits never expire. New accounts receive 2 free credits for any run except Discovery. Free ($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.
Key features
  • 12 deal-breaker checks for evaluating ideas
  • Market discovery with live searches across real sources
  • Whittle Score ranked 0–100 from fixed rubric computed in code
  • Build it / Test it first / Drop it verdict with reasons
  • Evidence linked to source pages or marked not verified
  • Up to 5 ranked idea candidates per Discovery run
  • Deep-dive modules: Kill My Idea, Pricing Power, Support Burden, Platform Risk, Pivot Wedge
  • Prepaid credits with no expiration
  • Free founder profile read and 2 free credits on signup
  • Async-only validation with no customer calls required
  • 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
What makes it different
  • No subscription or sales calls—pay per decision with credits that never expire
  • 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
Community votes00
DR (Domain Rating by Ahrefs)3 no change since last check63 no change since last check
Trust Flow (Majestic)1827
Citation Flow (Majestic)2440
Referring domains (Majestic)51876

4 details filled in for both companies.

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