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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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Gamma
A
HeyGen
S
Replit Agent
A
TaglineAI slide decks that don't look AI-generated.AI avatar videos. Record once, speak any language.Replit's AI that builds + deploys full apps on their platform.
CategoryProductivityVideoCoding
PricingFree + $10-$20/moFree + $24-$65/mo$10-$25/mo Core/Teams
Best forPitch decks, proposals, internal presentations — fast.Course creators, multilingual marketers, anyone scaling video content.Teachers, students, prototypers, hackathon builders.
Strengths
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • Full-stack + DB + auth + deploy in one environment
  • Great for teaching/learning
  • Runs everything in-browser
Weaknesses
  • Locked into Gamma's format
  • Export quality varies
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Locked into Replit hosting
  • Less code quality than dedicated IDEs
Kai's verdictA-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.A-tier. Best for teaching a kid to code in 2026.
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