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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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research
coding
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Perplexity
S
GitHub Copilot
B
Le Chat (Mistral)
B
OpenRouter
S
TaglineAI search done right. Cited answers, not chat theater.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.French alternative. Fast, European, privacy-focused.One API, every model. Pay-as-you-go, no subscriptions.
Categoryresearchcodingchatdev platform
PricingFree + $20/mo ProFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15/mo ProPay per token — model-dependent
Best forReplacing Google for any question where you want a cited answer in seconds.Teams with GitHub already. Devs who don't want to change IDEs.European users with data residency needs. Fans of open-weight models.Developers experimenting across models. Apps that want fallback logic.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • European data residency
  • Very fast responses
  • Open-weight Mistral models available
  • Good French/European languages
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Smaller capability gap vs frontier models
  • Less polished UX
  • Slight markup over direct API
  • Some provider features not exposed
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.B-tier overall, A-tier if GDPR/data residency matters. Solid backup option.S-tier for model-shopping. I use this for every prototype before committing.
LinkOpen →Open →Open →Open →