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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
Rows
A
OpenAI Voice / Realtime
S
Claude
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Spreadsheets with AI + live integrations baked in.ChatGPT's voice + the Realtime API for developers.Anthropic's flagship — best reasoning + longest useful context.
CategoryCodingDataVoiceChatbots
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $19-$89/user/moVoice included with ChatGPT Plus; Realtime API by usageFree + $20/mo Pro + team/enterprise
Best forTeams with GitHub already. Devs who don't want to change IDEs.Ops teams, marketers, anyone building dashboards from multiple sources.Voice chat users, developers building voice agents on OpenAI.Long writing, code, careful thinking, documents over 50 pages.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Image generation is weak
  • No native web search on all tiers
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.
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