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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
Rows
A
Flux (Black Forest Labs)
A
HeyGen
S
TaglineCognition Labs' autonomous coding engineer.Spreadsheets with AI + live integrations baked in.Open weights + strong photorealism. The open-source answer.AI avatar videos. Record once, speak any language.
Categoryagentsdataimagevideo
Pricing$500/moFree + $19-$89/user/moAPI + open weights (Schnell is Apache 2.0)Free + $24-$65/mo
Best forEngineering teams offloading tickets. Ops/platform work.Ops teams, marketers, anyone building dashboards from multiple sources.Developers + power users who want control and privacy.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Harder to use than hosted tools
  • Needs infra
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. S-tier if you self-host. The reason open-source image gen matters.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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