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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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GitHub Copilot
B
Claude Code
S
OpenAI Voice / Realtime
S
Gamma
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Anthropic's CLI agent. Opus-powered, operates on your repo directly.ChatGPT's voice + the Realtime API for developers.AI slide decks that don't look AI-generated.
Categorycodingcodingvoiceproductivity
PricingFree (limited) + $10/mo Pro + $19/mo BusinessPart of Claude Pro/Max/Team plansVoice included with ChatGPT Plus; Realtime API by usageFree + $10-$20/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Voice chat users, developers building voice agents on OpenAI.Pitch decks, proposals, internal presentations — fast.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Locked into Gamma's format
  • Export quality varies
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
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