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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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Manus
S
Sudowrite
S
Rows
A
DeepSeek
S
TaglineAutonomous AI agent that actually finishes tasks.AI writing tool built specifically for fiction writers.Spreadsheets with AI + live integrations baked in.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.
CategoryAgentsWritingDataChatbots
PricingFree tier + $39-$199/mo$19-$59/moFree + $19-$89/user/moFree web + ultra-cheap API (~$0.14/M input tokens)
Best forPeople who want to hand off tasks entirely — trip planning, research, spreadsheet building.Novelists, screenwriters, fiction short-form writers.Ops teams, marketers, anyone building dashboards from multiple sources.Developers + cost-conscious builders. Anyone fine with self-hosting.
Strengths
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
Weaknesses
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Pricey for casual use
  • Fiction-only focus — not for business writing
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
Kai's verdictS-tier in the agent category. The first one I'd give to a non-technical friend.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.
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