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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
GitHub Copilot
B
Suno
S
Sora
A
TaglineStability AI's open audio model. Loops + SFX + background.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Prompt to full song with vocals, instruments, the works.OpenAI's video model. Long clips, cinematic quality.
Categoryaudiocodingaudiovideo
PricingFree + $12/mo Pro + enterpriseFree (limited) + $10/mo Pro + $19/mo BusinessFree + $10/mo + $30/moIncluded with ChatGPT Plus/Pro
Best forGame developers, podcasters needing SFX, video creators needing background music.Teams with GitHub already. Devs who don't want to change IDEs.Jingles, intros, demos, sketches, personal use.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Copyright gray zone
  • Audio quality behind studio
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier in its category. The first AI music tool I'd actually listen to.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
LinkOpen →Open →Open →Open →