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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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Flux (Black Forest Labs)
A
Gemini
A
Rows
A
Hume AI
A
TaglineOpen weights + strong photorealism. The open-source answer.Google's answer. Best integrated with Workspace + free for a lot.Spreadsheets with AI + live integrations baked in.Voice AI that reads + expresses emotion.
CategoryImageChatbotsDataVoice
PricingAPI + open weights (Schnell is Apache 2.0)Free + $20/mo Advanced (bundled with 2TB Drive)Free + $19-$89/user/moFree tier + pay-as-you-go
Best forDevelopers + power users who want control and privacy.Anyone already on Google, research tasks, summarizing long documents.Ops teams, marketers, anyone building dashboards from multiple sources.Therapy apps, customer service, any voice agent where emotion matters.
Strengths
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Detects + mirrors emotional tone
  • EVI (Empathic Voice Interface) feels different
  • Expressive voice output
Weaknesses
  • Harder to use than hosted tools
  • Needs infra
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Niche use case
  • Pricing ramps fast
Kai's verdictA-tier. S-tier if you self-host. The reason open-source image gen matters.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier in its niche. The only one that actually gets emotion right.
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