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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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A
Suno
S
Udio
A
TaglineOpen-source VS Code agent. Reads + writes + runs.Prompt to full song with vocals, instruments, the works.Suno's main rival. Often better on instrumental nuance.
CategoryCodingAudioAudio
PricingFree (open source) + your API costsFree + $10/mo + $30/moFree + $10-$30/mo
Best forVS Code users who want agentic coding without changing IDEs.Jingles, intros, demos, sketches, personal use.Musicians comparing AI outputs. Anyone who didn't click with Suno.
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Strong instrumentals + genre fidelity
  • Extend/remix features
  • Good lyric understanding
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Copyright gray zone
  • Audio quality behind studio
  • Same copyright gray zone as Suno
  • Ecosystem smaller
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier in its category. The first AI music tool I'd actually listen to.A-tier. Genuinely different vibe from Suno — worth trying both for a month.
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