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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
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ChatGPT Operator
B
Claude Agent SDK
S
TaglineVS Code fork that made AI coding actually work.OpenAI's browser agent. Clicks and types on websites for you.Anthropic's SDK for building your own agents on Claude.
Categorycodingagentsagents
PricingFree + $20/mo Pro + $40/mo BusinessIncluded with ChatGPT Pro $200/moAPI usage + SDK is free
Best forDevelopers. Non-developers who want to ship working code.Power users willing to pay $200/mo for a browser bot.Developers building custom agents for their own company/product.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Developer-only
  • You build the UI
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.B-tier. Still early. Manus is more flexible for less money.S-tier for builders. The right primitives. What Kai is built on under the hood.
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