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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
Cline
A
OpenAI Voice / Realtime
S
Bolt.new (StackBlitz)
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Open-source VS Code agent. Reads + writes + runs.ChatGPT's voice + the Realtime API for developers.Prompt to deployed full-stack app in the browser.
CategoryCodingCodingVoiceCoding
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree (open source) + your API costsVoice included with ChatGPT Plus; Realtime API by usageFree + $20-$200/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.VS Code users who want agentic coding without changing IDEs.Voice chat users, developers building voice agents on OpenAI.PMs, founders, non-devs shipping MVPs.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Full-stack generation + live preview
  • Deploy to Netlify in one click
  • Works in-browser — no install
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Quality ceiling for complex apps
  • Can get into loops for non-trivial bugs
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. Best free agentic option in VS Code. Use with Claude for best results.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. Best for fast prototypes. Competitive with Lovable — try both.
LinkOpen →Open →Open →Open →