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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
ChatGPT Operator
B
Manus
S
Claude Agent SDK
S
Perplexity
S
TaglineOpenAI's browser agent. Clicks and types on websites for you.Autonomous AI agent that actually finishes tasks.Anthropic's SDK for building your own agents on Claude.AI search done right. Cited answers, not chat theater.
CategoryAgentsAgentsAgentsResearch
PricingIncluded with ChatGPT Pro $200/moFree tier + $39-$199/moAPI usage + SDK is freeFree + $20/mo Pro
Best forPower users willing to pay $200/mo for a browser bot.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.Developers building custom agents for their own company/product.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Developer-only
  • You build the UI
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictB-tier. Still early. Manus is more flexible for less money.S-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for builders. The right primitives. What Kai is built on under the hood.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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