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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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Windsurf
A
Suno
S
Claude Agent SDK
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Prompt to full song with vocals, instruments, the works.Anthropic's SDK for building your own agents on Claude.
Categorycodingaudioagents
PricingFree + $15/mo ProFree + $10/mo + $30/moAPI usage + SDK is free
Best forDevelopers who want Cursor-like power for less money.Jingles, intros, demos, sketches, personal use.Developers building custom agents for their own company/product.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Smaller community
  • Model selection more limited
  • Copyright gray zone
  • Audio quality behind studio
  • Developer-only
  • You build the UI
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for builders. The right primitives. What Kai is built on under the hood.
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