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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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Perplexity
S
OpenRouter
S
Claude Code
S
Reflect
A
TaglineAI search done right. Cited answers, not chat theater.One API, every model. Pay-as-you-go, no subscriptions.Anthropic's CLI agent. Opus-powered, operates on your repo directly.AI-powered networked notes. Roam with a brain.
Categoryresearchdev platformcodingproductivity
PricingFree + $20/mo ProPay per token — model-dependentPart of Claude Pro/Max/Team plans$10/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Developers experimenting across models. Apps that want fallback logic.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Knowledge workers + thinkers who want AI in their second brain.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • AI auto-links related notes
  • Generates backlinks + summaries
  • Clean, minimal UX
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Slight markup over direct API
  • Some provider features not exposed
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Expensive for just notes
  • Smaller community than Obsidian
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for model-shopping. I use this for every prototype before committing.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. Niche but beloved. If you've outgrown Notion, try this.
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