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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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OpenAI Voice / Realtime
S
ChatGPT Operator
B
Cursor
S
Manus
S
TaglineChatGPT's voice + the Realtime API for developers.OpenAI's browser agent. Clicks and types on websites for you.VS Code fork that made AI coding actually work.Autonomous AI agent that actually finishes tasks.
CategoryVoiceAgentsCodingAgents
PricingVoice included with ChatGPT Plus; Realtime API by usageIncluded with ChatGPT Pro $200/moFree + $20/mo Pro + $40/mo BusinessFree tier + $39-$199/mo
Best forVoice chat users, developers building voice agents on OpenAI.Power users willing to pay $200/mo for a browser bot.Developers. Non-developers who want to ship working code.People who want to hand off tasks entirely — trip planning, research, spreadsheet building.
Strengths
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Actually uses websites — fills forms, clicks, checks out
  • Built into ChatGPT
  • Good for repetitive web tasks
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • General-purpose agent — research, book, build, analyze
  • Parallel task execution
  • Web browsing + file creation + coding
Weaknesses
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Slow vs doing it yourself
  • Breaks on complex auth flows
  • $200/mo gate
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Still hit-or-miss on complex multi-hour tasks
  • Can burn credits fast
Kai's verdictS-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.B-tier. Still early. Manus is more flexible for less money.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier in the agent category. The first one I'd give to a non-technical friend.
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