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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
Devin
A
Kling
A
DeepSeek
S
Gemini
A
TaglineCognition Labs' autonomous coding engineer.Kuaishou's video model. The surprise standout.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.Google's answer. Best integrated with Workspace + free for a lot.
CategoryAgentsVideoChatbotsChatbots
Pricing$500/moCredit-based, free trialFree web + ultra-cheap API (~$0.14/M input tokens)Free + $20/mo Advanced (bundled with 2TB Drive)
Best forEngineering teams offloading tickets. Ops/platform work.Anyone who wants top-tier video quality for less.Developers + cost-conscious builders. Anyone fine with self-hosting.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • UX is rough for English speakers
  • Queue times
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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