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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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Writesonic
B
Suno
S
Cursor
S
Sora
A
TaglineSEO-first AI writer. Optimized for ranking content.Prompt to full song with vocals, instruments, the works.VS Code fork that made AI coding actually work.OpenAI's video model. Long clips, cinematic quality.
CategoryMarketingAudioCodingVideo
PricingFree + $15-$99/moFree + $10/mo + $30/moFree + $20/mo Pro + $40/mo BusinessIncluded with ChatGPT Plus/Pro
Best forContent marketers churning out SEO articles.Jingles, intros, demos, sketches, personal use.Developers. Non-developers who want to ship working code.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Copyright gray zone
  • Audio quality behind studio
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictB-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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