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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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Leonardo.ai
A
HeyGen
S
Gemini
A
Flux (Black Forest Labs)
A
TaglineGamer + creator image gen with model fine-tuning built in.AI avatar videos. Record once, speak any language.Google's answer. Best integrated with Workspace + free for a lot.Open weights + strong photorealism. The open-source answer.
CategoryImageVideoChatbotsImage
PricingFree + $12-$60/moFree + $24-$65/moFree + $20/mo Advanced (bundled with 2TB Drive)API + open weights (Schnell is Apache 2.0)
Best forIndie game devs, illustrators, anyone training custom style models.Course creators, multilingual marketers, anyone scaling video content.Anyone already on Google, research tasks, summarizing long documents.Developers + power users who want control and privacy.
Strengths
  • Train your own models on your style/character
  • Great for game art + concept art
  • Generous free tier
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Runs locally on a beefy GPU
  • Very photoreal
  • Best open-weight model
Weaknesses
  • General output behind Midjourney
  • Can be overwhelming
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Harder to use than hosted tools
  • Needs infra
Kai's verdictA-tier for creators training custom looks. B-tier for general use.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.A-tier. S-tier if you self-host. The reason open-source image gen matters.
LinkOpen →Open →Open →Open →