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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
Devin
A
OpenAI Voice / Realtime
S
Sora
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Cognition Labs' autonomous coding engineer.ChatGPT's voice + the Realtime API for developers.OpenAI's video model. Long clips, cinematic quality.
CategoryCodingAgentsVoiceVideo
PricingFree (limited) + $10/mo Pro + $19/mo Business$500/moVoice included with ChatGPT Plus; Realtime API by usageIncluded with ChatGPT Plus/Pro
Best forTeams with GitHub already. Devs who don't want to change IDEs.Engineering teams offloading tickets. Ops/platform work.Voice chat users, developers building voice agents on OpenAI.ChatGPT subscribers experimenting with cinematic shots.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Up to 20-sec clips at 1080p
  • Strong physics + scene composition
  • Storyboard feature for longer narratives
  • Remix existing videos
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Stricter content policy than competitors
  • Hit-or-miss on complex motion
  • Text-in-video still struggles
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros.
LinkOpen →Open →Open →Open →