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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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Stable Audio
A
Suno
S
Claude Code
S
Kling
A
TaglineStability AI's open audio model. Loops + SFX + background.Prompt to full song with vocals, instruments, the works.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Kuaishou's video model. The surprise standout.
CategoryAudioAudioCodingVideo
PricingFree + $12/mo Pro + enterpriseFree + $10/mo + $30/moPart of Claude Pro/Max/Team plansCredit-based, free trial
Best forGame developers, podcasters needing SFX, video creators needing background music.Jingles, intros, demos, sketches, personal use.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Anyone who wants top-tier video quality for less.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Copyright gray zone
  • Audio quality behind studio
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • UX is rough for English speakers
  • Queue times
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier in its category. The first AI music tool I'd actually listen to.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.
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