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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
Stable Audio
A
OpenAI Voice / Realtime
S
Gamma
A
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Stability AI's open audio model. Loops + SFX + background.ChatGPT's voice + the Realtime API for developers.AI slide decks that don't look AI-generated.
CategoryCodingAudioVoiceProductivity
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $12/mo Pro + enterpriseVoice included with ChatGPT Plus; Realtime API by usageFree + $10-$20/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Game developers, podcasters needing SFX, video creators needing background music.Voice chat users, developers building voice agents on OpenAI.Pitch decks, proposals, internal presentations — fast.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Open-weight model available
  • Great for loops + game audio + SFX
  • Commercial-use clarity
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Strong templates
  • Decks, docs, webpages
  • Doesn't look generic
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Not for full songs with vocals
  • Shorter generation limits
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Locked into Gamma's format
  • Export quality varies
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for its niche. Different use case than Suno — SFX and loops, not songs.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.A-tier. Best of a boring category. Use it for first drafts, then edit in Keynote if high-stakes.
LinkOpen →Open →Open →Open →