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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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Agents
Voice
Video
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Research
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Chatbots
Image
Meetings
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Productivity
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Data
Marketing
Education
Flux (Black Forest Labs)
A
Duolingo Max
A
Rows
A
Devin
A
TaglineOpen weights + strong photorealism. The open-source answer.Duolingo + AI. Explain My Answer + Roleplay features.Spreadsheets with AI + live integrations baked in.Cognition Labs' autonomous coding engineer.
CategoryImageEducationDataAgents
PricingAPI + open weights (Schnell is Apache 2.0)$30/mo (or ~$168/yr)Free + $19-$89/user/mo$500/mo
Best forDevelopers + power users who want control and privacy.Language learners who've outgrown basic Duolingo.Ops teams, marketers, anyone building dashboards from multiple sources.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Explain My Answer = personal tutor for every mistake
  • Roleplay = real conversation practice
  • Gamification that actually sticks
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Pricey vs free Duolingo
  • Conversation AI still stiff sometimes
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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