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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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Dev Platform
Agents
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Coding
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Aider
A
Lex
A
Suno
S
Sora
A
TaglineTerminal-based AI pair programmer. Git-aware, model-flexible.Google Docs with an AI collaborator baked in.Prompt to full song with vocals, instruments, the works.OpenAI's video model. Long clips, cinematic quality.
CategoryCodingWritingAudioVideo
PricingFree (open source) + whatever API you useFree + $12/moFree + $10/mo + $30/moIncluded with ChatGPT Plus/Pro
Best forDevelopers who want open-source tooling with full control.Essays, long-form drafts, thinking on the page.Jingles, intros, demos, sketches, personal use.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Works in any terminal
  • Auto-commits changes with meaningful messages
  • Works with any model (Claude, GPT, local)
  • Minimal learning curve
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • 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
  • Terminal-only
  • Less agentic than Claude Code
  • Setup on Windows is fiddly
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • 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. The right answer if you want open-source + terminal-native + model-agnostic.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.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.
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