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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
Cursor
S
OpenAI Voice / Realtime
S
Runway
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.VS Code fork that made AI coding actually work.ChatGPT's voice + the Realtime API for developers.The pro's AI video tool. Gen-4 is the current bar.
Categorycodingcodingvoicevideo
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $20/mo Pro + $40/mo BusinessVoice included with ChatGPT Plus; Realtime API by usageFree + $15-$95/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers. Non-developers who want to ship working code.Voice chat users, developers building voice agents on OpenAI.Marketing video, pitch decks, b-roll, creative shorts.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Most mature video workflow
  • Character consistency via Act-One
  • Gen-4 quality is production-grade
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Expensive at scale
  • Still needs post-editing
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier. Market leader with reason. Start here for serious video.
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