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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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Claude Agent SDK
S
ChatGPT Operator
B
Groq
S
TaglineAnthropic's SDK for building your own agents on Claude.OpenAI's browser agent. Clicks and types on websites for you.The fastest AI inference in the world. Crazy low latency.
CategoryAgentsAgentsDev Platform
PricingAPI usage + SDK is freeIncluded with ChatGPT Pro $200/moFree tier + pay-as-you-go API
Best forDevelopers building custom agents for their own company/product.Power users willing to pay $200/mo for a browser bot.Developers who need sub-100ms LLM responses.
Strengths
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
Weaknesses
  • Developer-only
  • You build the UI
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
Kai's verdictS-tier for builders. The right primitives. What Kai is built on under the hood.B-tier. Still early. Manus is more flexible for less money.S-tier for speed. When latency is the product, start here.
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