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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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S
Devin
A
Khanmigo
S
Le Chat (Mistral)
B
TaglineRun any open-source AI model with an API call.Cognition Labs' autonomous coding engineer.Khan Academy's AI tutor. Socratic method, built for learning.French alternative. Fast, European, privacy-focused.
CategoryDev PlatformAgentsEducationChatbots
PricingPay per second of compute$500/mo$4/mo (free for teachers)Free + $15/mo Pro
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Engineering teams offloading tickets. Ops/platform work.Students K-12. Parents helping with homework. Teachers prepping lessons.European users with data residency needs. Fans of open-weight models.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Socratic — doesn't give answers, asks questions
  • Trusted by schools + parents
  • Integrated with Khan Academy curriculum
  • European data residency
  • Very fast responses
  • Open-weight Mistral models available
  • Good French/European languages
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • K-12 focus (not deep for adults)
  • Slower than general chatbots
  • Smaller capability gap vs frontier models
  • Less polished UX
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for kids learning. The tutoring UX is legit — not a generic chatbot dressed up.B-tier overall, A-tier if GDPR/data residency matters. Solid backup option.
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