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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
Suno
S
OpenAI Voice / Realtime
S
Replicate
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Prompt to full song with vocals, instruments, the works.ChatGPT's voice + the Realtime API for developers.Run any open-source AI model with an API call.
Categorycodingaudiovoicedev platform
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree + $10/mo + $30/moVoice included with ChatGPT Plus; Realtime API by usagePay per second of compute
Best forTeams with GitHub already. Devs who don't want to change IDEs.Jingles, intros, demos, sketches, personal use.Voice chat users, developers building voice agents on OpenAI.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Real songs with real lyrics
  • v4 is very good
  • Quick turnaround
  • Advanced Voice Mode feels genuinely conversational
  • Realtime API enables true two-way voice apps
  • Built into ChatGPT
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Copyright gray zone
  • Audio quality behind studio
  • Pricey for production apps
  • Less voice variety than ElevenLabs
  • Platform lock-in
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier in its category. The first AI music tool I'd actually listen to.S-tier for conversation. A-tier for TTS. Complement to ElevenLabs, not replacement.S-tier for open-source model APIs. The default in this space.
LinkOpen →Open →Open →Open →