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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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HeyGen
S
OpenAI Voice / Realtime
S
GitHub Copilot
B
Sora
A
TaglineAI avatar videos. Record once, speak any language.ChatGPT's voice + the Realtime API for developers.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.OpenAI's video model. Long clips, cinematic quality.
CategoryVideoVoiceCodingVideo
PricingFree + $24-$65/moVoice included with ChatGPT Plus; Realtime API by usageFree (limited) + $10/mo Pro + $19/mo BusinessIncluded with ChatGPT Plus/Pro
Best forCourse creators, multilingual marketers, anyone scaling video content.Voice 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.
Strengths
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • 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
Weaknesses
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • 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
Kai's verdictS-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.S-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.
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