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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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ChatGPT Operator
B
Kling
A
Devin
A
Replicate
S
TaglineOpenAI's browser agent. Clicks and types on websites for you.Kuaishou's video model. The surprise standout.Cognition Labs' autonomous coding engineer.Run any open-source AI model with an API call.
Categoryagentsvideoagentsdev platform
PricingIncluded with ChatGPT Pro $200/moCredit-based, free trial$500/moPay per second of compute
Best forPower users willing to pay $200/mo for a browser bot.Anyone who wants top-tier video quality for less.Engineering teams offloading tickets. Ops/platform work.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • UX is rough for English speakers
  • Queue times
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictB-tier. Still early. Manus is more flexible for less money.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for open-source model APIs. The default in this space.
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