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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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Coding
Agents
Research
Chatbots
Image
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Meetings
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Productivity
Audio
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Dev Platform
Data
Marketing
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Perplexity
S
Claude Agent SDK
S
Groq
S
ChatGPT Operator
B
TaglineAI search done right. Cited answers, not chat theater.Anthropic's SDK for building your own agents on Claude.The fastest AI inference in the world. Crazy low latency.OpenAI's browser agent. Clicks and types on websites for you.
CategoryResearchAgentsDev PlatformAgents
PricingFree + $20/mo ProAPI usage + SDK is freeFree tier + pay-as-you-go APIIncluded with ChatGPT Pro $200/mo
Best forReplacing Google for any question where you want a cited answer in seconds.Developers building custom agents for their own company/product.Developers who need sub-100ms LLM responses.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Developer-only
  • You build the UI
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for builders. The right primitives. What Kai is built on under the hood.S-tier for speed. When latency is the product, start here.B-tier. Still early. Manus is more flexible for less money.
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