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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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Devin
A
Aider
A
Google Veo
A
Hex
A
TaglineCognition Labs' autonomous coding engineer.Terminal-based AI pair programmer. Git-aware, model-flexible.Google's video model. Baked into Gemini + YouTube Shorts.Modern data notebook with Magic AI assistant.
CategoryAgentsCodingVideoData
Pricing$500/moFree (open source) + whatever API you useIncluded with Gemini Advanced $20/mo + YouTube creator toolsFree + $28+/user/mo
Best forEngineering teams offloading tickets. Ops/platform work.Developers who want open-source tooling with full control.Gemini Advanced users, YouTube Shorts creators.Data teams at startups + enterprises.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Included with Gemini Advanced
  • YouTube Shorts native integration
  • Strong prompt understanding
  • SQL + Python + no-code in one notebook
  • Magic AI writes queries + viz for you
  • Team-grade collaboration
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Still catching up on quality vs Kling/Runway
  • Less control than pros need
  • Overkill for casual users
  • Enterprise pricing
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier if you already pay Gemini. B-tier standalone.A-tier for data teams. S-tier if you already live in SQL + Python.
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