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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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Aider
A
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Runway
S
Suno
S
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.Spreadsheets with AI + live integrations baked in.The pro's AI video tool. Gen-4 is the current bar.Prompt to full song with vocals, instruments, the works.
CategoryCodingDataVideoAudio
PricingFree (open source) + whatever API you useFree + $19-$89/user/moFree + $15-$95/moFree + $10/mo + $30/mo
Best forDevelopers who want open-source tooling with full control.Ops teams, marketers, anyone building dashboards from multiple sources.Marketing video, pitch decks, b-roll, creative shorts.Jingles, intros, demos, sketches, personal use.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
Weaknesses
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Expensive at scale
  • Still needs post-editing
  • Copyright gray zone
  • Audio quality behind studio
Kai's verdictA-tier. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier. Market leader with reason. Start here for serious video.S-tier in its category. The first AI music tool I'd actually listen to.
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