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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
Kling
A
Windsurf
A
Udio
A
TaglineCognition Labs' autonomous coding engineer.Kuaishou's video model. The surprise standout.Codeium's agentic IDE. Cascade agent + strong free tier.Suno's main rival. Often better on instrumental nuance.
CategoryAgentsVideoCodingAudio
Pricing$500/moCredit-based, free trialFree + $15/mo ProFree + $10-$30/mo
Best forEngineering teams offloading tickets. Ops/platform work.Anyone who wants top-tier video quality for less.Developers who want Cursor-like power for less money.Musicians comparing AI outputs. Anyone who didn't click with Suno.
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
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Strong instrumentals + genre fidelity
  • Extend/remix features
  • Good lyric understanding
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • UX is rough for English speakers
  • Queue times
  • Smaller community
  • Model selection more limited
  • Same copyright gray zone as Suno
  • Ecosystem smaller
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.A-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. Genuinely different vibe from Suno — worth trying both for a month.
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