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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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Replicate
S
Suno
S
Kling
A
DALL-E 3
B
TaglineRun any open-source AI model with an API call.Prompt to full song with vocals, instruments, the works.Kuaishou's video model. The surprise standout.OpenAI's image model. Built into ChatGPT Plus.
CategoryDev PlatformAudioVideoImage
PricingPay per second of computeFree + $10/mo + $30/moCredit-based, free trialIncluded with ChatGPT Plus $20/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Jingles, intros, demos, sketches, personal use.Anyone who wants top-tier video quality for less.ChatGPT Plus users who want images without paying extra.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Copyright gray zone
  • Audio quality behind studio
  • UX is rough for English speakers
  • Queue times
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier in its category. The first AI music tool I'd actually listen to.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
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