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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
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Fathom
S
Lex
A
Sora
A
Suno
S
TaglineMeeting notes, free forever for individuals.Google Docs with an AI collaborator baked in.OpenAI's video model. Long clips, cinematic quality.Prompt to full song with vocals, instruments, the works.
CategoryMeetingsWritingVideoAudio
PricingFree for individuals + $15-$29/user/mo teamsFree + $12/moIncluded with ChatGPT Plus/ProFree + $10/mo + $30/mo
Best forSolo operators, freelancers, small teams on a budget.Essays, long-form drafts, thinking on the page.ChatGPT subscribers experimenting with cinematic shots.Jingles, intros, demos, sketches, personal use.
Strengths
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
Weaknesses
  • Bot-joining model
  • Team features gated
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Copyright gray zone
  • Audio quality behind studio
Kai's verdictS-tier for solo + free. The best free option, hands down.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.S-tier in its category. The first AI music tool I'd actually listen to.
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