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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
Claude
S
GitHub Copilot
B
HeyGen
S
TaglineAI slide decks that don't look AI-generated.Anthropic's flagship — best reasoning + longest useful context.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI avatar videos. Record once, speak any language.
Categoryproductivitychatcodingvideo
PricingFree + $10-$20/moFree + $20/mo Pro + team/enterpriseFree (limited) + $10/mo Pro + $19/mo BusinessFree + $24-$65/mo
Best forPitch decks, proposals, internal presentations — fast.Long writing, code, careful thinking, documents over 50 pages.Teams with GitHub already. Devs who don't want to change IDEs.Course creators, multilingual marketers, anyone scaling video content.
Strengths
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 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
  • Image generation is weak
  • No native web search on all tiers
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • 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 reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.
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