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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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Chatbots
Research
Coding
Image
Video
Voice
Meetings
Design
Productivity
Audio
Writing
Agents
Dev Platform
Data
Marketing
Education
Claude Agent SDK
S
Cursor
S
ChatGPT Operator
B
Perplexity
S
TaglineAnthropic's SDK for building your own agents on Claude.VS Code fork that made AI coding actually work.OpenAI's browser agent. Clicks and types on websites for you.AI search done right. Cited answers, not chat theater.
CategoryAgentsCodingAgentsResearch
PricingAPI usage + SDK is freeFree + $20/mo Pro + $40/mo BusinessIncluded with ChatGPT Pro $200/moFree + $20/mo Pro
Best forDevelopers building custom agents for their own company/product.Developers. Non-developers who want to ship working code.Power users willing to pay $200/mo for a browser bot.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • 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
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Developer-only
  • You build the UI
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictS-tier for builders. The right primitives. What Kai is built on under the hood.S-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 search. I use it before Google now. If you're still Googling everything, try this for a week.
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