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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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OpenRouter
S
Reflect
A
Rows
A
TaglineOne API, every model. Pay-as-you-go, no subscriptions.AI-powered networked notes. Roam with a brain.Spreadsheets with AI + live integrations baked in.
CategoryDev PlatformProductivityData
PricingPay per token — model-dependent$10/moFree + $19-$89/user/mo
Best forDevelopers experimenting across models. Apps that want fallback logic.Knowledge workers + thinkers who want AI in their second brain.Ops teams, marketers, anyone building dashboards from multiple sources.
Strengths
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
Weaknesses
  • Slight markup over direct API
  • Some provider features not exposed
  • Expensive for just notes
  • Smaller community than Obsidian
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
Kai's verdictS-tier for model-shopping. I use this for every prototype before committing.A-tier. Niche but beloved. If you've outgrown Notion, try this.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.
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