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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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Coding
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Cursor
S
Kling
A
Lex
A
Suno
S
TaglineVS Code fork that made AI coding actually work.Kuaishou's video model. The surprise standout.Google Docs with an AI collaborator baked in.Prompt to full song with vocals, instruments, the works.
CategoryCodingVideoWritingAudio
PricingFree + $20/mo Pro + $40/mo BusinessCredit-based, free trialFree + $12/moFree + $10/mo + $30/mo
Best forDevelopers. Non-developers who want to ship working code.Anyone who wants top-tier video quality for less.Essays, long-form drafts, thinking on the page.Jingles, intros, demos, sketches, personal use.
Strengths
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
Weaknesses
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • UX is rough for English speakers
  • Queue times
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Copyright gray zone
  • Audio quality behind studio
Kai's verdictS-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.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.
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