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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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Cursor
S
Ollama
S
Lex
A
Devin
A
TaglineVS Code fork that made AI coding actually work.Run LLMs locally. One-line install, GUI optional.Google Docs with an AI collaborator baked in.Cognition Labs' autonomous coding engineer.
CategoryCodingDev PlatformWritingAgents
PricingFree + $20/mo Pro + $40/mo BusinessFree + open sourceFree + $12/mo$500/mo
Best forDevelopers. Non-developers who want to ship working code.Devs wanting offline/local LLMs for privacy or experimentation.Essays, long-form drafts, thinking on the page.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Run Llama, Mistral, Qwen, etc. on your laptop
  • Simple CLI + API
  • Hardware-aware (picks the right quant)
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Needs beefy laptop for larger models
  • Speed way behind cloud APIs
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for local inference. If you care about privacy or want to tinker, install this today.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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