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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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Kling
A
Groq
S
ChatGPT Operator
B
Fathom
S
TaglineKuaishou's video model. The surprise standout.The fastest AI inference in the world. Crazy low latency.OpenAI's browser agent. Clicks and types on websites for you.Meeting notes, free forever for individuals.
CategoryVideoDev PlatformAgentsMeetings
PricingCredit-based, free trialFree tier + pay-as-you-go APIIncluded with ChatGPT Pro $200/moFree for individuals + $15-$29/user/mo teams
Best forAnyone who wants top-tier video quality for less.Developers who need sub-100ms LLM responses.Power users willing to pay $200/mo for a browser bot.Solo operators, freelancers, small teams on a budget.
Strengths
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • 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
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
Weaknesses
  • UX is rough for English speakers
  • Queue times
  • 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
  • Bot-joining model
  • Team features gated
Kai's verdictA-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.S-tier for speed. When latency is the product, start here.B-tier. Still early. Manus is more flexible for less money.S-tier for solo + free. The best free option, hands down.
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