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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
ChatGPT Operator
B
Hume AI
A
Sora
A
Bolt.new (StackBlitz)
A
TaglineOpenAI's browser agent. Clicks and types on websites for you.Voice AI that reads + expresses emotion.OpenAI's video model. Long clips, cinematic quality.Prompt to deployed full-stack app in the browser.
CategoryAgentsVoiceVideoCoding
PricingIncluded with ChatGPT Pro $200/moFree tier + pay-as-you-goIncluded with ChatGPT Plus/ProFree + $20-$200/mo
Best forPower users willing to pay $200/mo for a browser bot.Therapy apps, customer service, any voice agent where emotion matters.ChatGPT subscribers experimenting with cinematic shots.PMs, founders, non-devs shipping MVPs.
Strengths
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
Weaknesses
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Niche use case
  • Pricing ramps fast
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
Kai's verdictB-tier. Still early. Manus is more flexible for less money.A-tier in its niche. The only one that actually gets emotion right.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier. Best for fast prototypes. Competitive with Lovable — try both.
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