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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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Aider
A
Claude Code
S
ChatGPT Operator
B
Leonardo.ai
A
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.Anthropic's CLI agent. Opus-powered, operates on your repo directly.OpenAI's browser agent. Clicks and types on websites for you.Gamer + creator image gen with model fine-tuning built in.
Categorycodingcodingagentsimage
PricingFree (open source) + whatever API you usePart of Claude Pro/Max/Team plansIncluded with ChatGPT Pro $200/moFree + $12-$60/mo
Best forDevelopers who want open-source tooling with full control.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Power users willing to pay $200/mo for a browser bot.Indie game devs, illustrators, anyone training custom style models.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • General output behind Midjourney
  • Can be overwhelming
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.B-tier. Still early. Manus is more flexible for less money.A-tier for creators training custom looks. B-tier for general use.
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