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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
Sora
A
Gemini
A
TaglineSEO-first AI writer. Optimized for ranking content.Prompt to full song with vocals, instruments, the works.OpenAI's video model. Long clips, cinematic quality.Google's answer. Best integrated with Workspace + free for a lot.
CategoryMarketingAudioVideoChatbots
PricingFree + $15-$99/moFree + $10/mo + $30/moIncluded with ChatGPT Plus/ProFree + $20/mo Advanced (bundled with 2TB Drive)
Best forContent marketers churning out SEO articles.Jingles, intros, demos, sketches, personal use.ChatGPT subscribers experimenting with cinematic shots.Anyone already on Google, research tasks, summarizing long documents.
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
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
  • Copyright gray zone
  • Audio quality behind studio
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
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.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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