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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
Windsurf
A
Leonardo.ai
A
ChatGPT Operator
B
TaglineRun any open-source AI model with an API call.Codeium's agentic IDE. Cascade agent + strong free tier.Gamer + creator image gen with model fine-tuning built in.OpenAI's browser agent. Clicks and types on websites for you.
CategoryDev PlatformCodingImageAgents
PricingPay per second of computeFree + $15/mo ProFree + $12-$60/moIncluded with ChatGPT Pro $200/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers who want Cursor-like power for less money.Indie game devs, illustrators, anyone training custom style models.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Smaller community
  • Model selection more limited
  • General output behind Midjourney
  • Can be overwhelming
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier for creators training custom looks. B-tier for general use.B-tier. Still early. Manus is more flexible for less money.
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