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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
Kling
A
GitHub Copilot
B
Windsurf
A
TaglineStability AI's open audio model. Loops + SFX + background.Kuaishou's video model. The surprise standout.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Codeium's agentic IDE. Cascade agent + strong free tier.
Categoryaudiovideocodingcoding
PricingFree + $12/mo Pro + enterpriseCredit-based, free trialFree (limited) + $10/mo Pro + $19/mo BusinessFree + $15/mo Pro
Best forGame developers, podcasters needing SFX, video creators needing background music.Anyone who wants top-tier video quality for less.Teams with GitHub already. Devs who don't want to change IDEs.Developers who want Cursor-like power for less money.
Strengths
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
Weaknesses
  • Not for full songs with vocals
  • Shorter generation limits
  • UX is rough for English speakers
  • Queue times
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Smaller community
  • Model selection more limited
Kai's verdictA-tier for its niche. Different use case than Suno — SFX and loops, not songs.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. Close second to Cursor. If $5/mo matters, start here.
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