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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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Suno
S
Runway
S
ChatGPT Operator
B
TaglinePrompt to full song with vocals, instruments, the works.The pro's AI video tool. Gen-4 is the current bar.OpenAI's browser agent. Clicks and types on websites for you.
CategoryAudioVideoAgents
PricingFree + $10/mo + $30/moFree + $15-$95/moIncluded with ChatGPT Pro $200/mo
Best forJingles, intros, demos, sketches, personal use.Marketing video, pitch decks, b-roll, creative shorts.Power users willing to pay $200/mo for a browser bot.
Strengths
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
Weaknesses
  • Copyright gray zone
  • Audio quality behind studio
  • Expensive at scale
  • Still needs post-editing
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
Kai's verdictS-tier in its category. The first AI music tool I'd actually listen to.S-tier. Market leader with reason. Start here for serious video.B-tier. Still early. Manus is more flexible for less money.
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