Skip to main content

Built by makers, shipped in public

Sign in

WhittleOS vs Slashspace

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 Slashspace
DetailWhittleOS logo WhittleOSSlashspace logo Slashspace
What it doesA startup decision engine for solo founders that kills weak ideas before they waste your months Branch any AI chat on an infinite canvas
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. Yearly: $89 per year with updates while subscribed. Lifetime: $249 one-time with lifetime updates. Both plans include 500 wallet credits, unlimited canvases and branches, 2 device seats, and are refundable within 7 days. Wallet top-ups: $10 of balance (1,000 credits) costs $11 including a 10% platfo
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
  • Compare multiple AI models side by side on identical context
  • Connect PDFs, web pages, videos and notes as context
  • Use your own API keys for multiple providers
  • Run local models with Ollama
  • Use Claude or ChatGPT subscriptions through official CLIs
  • Merge branches into a new chat with full context
  • Orchestrator mode for planning and delegating work
  • Connect 100+ apps via Composio and MCP integrations
What makes it different
  • No subscription or sales calls—pay per decision with credits that never expire
  • Canvas layout keeps your entire problem visible at once instead of hidden in a scroll
  • Use multiple models at once with your subscriptions or API keys, not locked into one
Community votes00
DR (Domain Rating by Ahrefs)3 no change since last check33 no change since last check
Trust Flow (Majestic)1817
Citation Flow (Majestic)2433
Referring domains (Majestic)51418

4 details filled in for both companies.

More alternatives to WhittleOS More alternatives to Slashspace

Ask us