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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.
Pick tools (3 selected)
Chatbots
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Coding
Image
Video
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Meetings
Design
Productivity
Audio
Writing
Agents
Dev Platform
Data
Marketing
Education
Gamma
A
DeepSeek
S
HeyGen
S
TaglineAI slide decks that don't look AI-generated.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.AI avatar videos. Record once, speak any language.
CategoryProductivityChatbotsVideo
PricingFree + $10-$20/moFree web + ultra-cheap API (~$0.14/M input tokens)Free + $24-$65/mo
Best forPitch decks, proposals, internal presentations — fast.Developers + cost-conscious builders. Anyone fine with self-hosting.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
Weaknesses
  • Locked into Gamma's format
  • Export quality varies
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
Kai's verdictA-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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