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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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Video
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Flux (Black Forest Labs)
A
Sora
A
Rows
A
Sudowrite
S
TaglineOpen weights + strong photorealism. The open-source answer.OpenAI's video model. Long clips, cinematic quality.Spreadsheets with AI + live integrations baked in.AI writing tool built specifically for fiction writers.
CategoryImageVideoDataWriting
PricingAPI + open weights (Schnell is Apache 2.0)Included with ChatGPT Plus/ProFree + $19-$89/user/mo$19-$59/mo
Best forDevelopers + power users who want control and privacy.ChatGPT subscribers experimenting with cinematic shots.Ops teams, marketers, anyone building dashboards from multiple sources.Novelists, screenwriters, fiction short-form writers.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Pricey for casual use
  • Fiction-only focus — not for business writing
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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