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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
GitHub Copilot
B
Sora
A
Gemini
A
TaglineChatGPT's voice + the Realtime API for developers.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.OpenAI's video model. Long clips, cinematic quality.Google's answer. Best integrated with Workspace + free for a lot.
CategoryVoiceCodingVideoChatbots
PricingVoice included with ChatGPT Plus; Realtime API by usageFree (limited) + $10/mo Pro + $19/mo BusinessIncluded with ChatGPT Plus/ProFree + $20/mo Advanced (bundled with 2TB Drive)
Best forVoice chat users, developers building voice agents on OpenAI.Teams with GitHub already. Devs who don't want to change IDEs.ChatGPT subscribers experimenting with cinematic shots.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictS-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
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