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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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Devin
A
Manus
S
Sora
A
TaglineCognition Labs' autonomous coding engineer.Autonomous AI agent that actually finishes tasks.OpenAI's video model. Long clips, cinematic quality.
CategoryAgentsAgentsVideo
Pricing$500/moFree tier + $39-$199/moIncluded with ChatGPT Plus/Pro
Best forEngineering teams offloading tickets. Ops/platform work.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier in the agent category. The first one I'd give to a non-technical friend.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
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