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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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Windsurf
A
OpenAI Voice / Realtime
S
Gemini
A
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.ChatGPT's voice + the Realtime API for developers.Google's answer. Best integrated with Workspace + free for a lot.
Categorycodingvoicechat
PricingFree + $15/mo ProVoice included with ChatGPT Plus; Realtime API by usageFree + $20/mo Advanced (bundled with 2TB Drive)
Best forDevelopers who want Cursor-like power for less money.Voice chat users, developers building voice agents on OpenAI.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Smaller community
  • Model selection more limited
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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