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Open source · Local-first · Multi-voice

One chat. Many minds.

Polyphon orchestrates conversations between multiple AI voices simultaneously. You send a message — every voice responds. They hear each other.

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Everything you need to orchestrate AI

Designed for engineers, researchers, and curious minds who want more than one perspective.

Multiple voices, one conversation

Add any combination of Claude, GPT-4, Gemini, or local CLI tools. Every voice sees the full history.

Compositions

Save a named set of voices as a composition, then launch new sessions from it instantly.

Reusable configuration

Save tone presets and system prompt templates. Attach them to any voice in any composition — update once, applies everywhere.

Broadcast & conductor modes

Broadcast to all voices at once, or direct your message to a specific voice.

Conductor profile

Set your name, pronouns, and context. Every voice receives this in its system prompt.

Local-first, no telemetry

Conversations and API keys stay on your machine. No account, no cloud sync.

The ensemble at work

Ask once. Every voice responds — and they hear each other.

What's the most underrated quality in a great engineer?
Alex
Claude · Anthropic Curiosity about the problem behind the problem. Asking "why are we solving this?" saves more time than optimizing the wrong solution ever could.
GPT-4o · OpenAI Knowing when to stop. There's always a cleaner approach — the real skill is shipping the version that's good enough and moving on.
Gemini · Google Comfort with uncertainty. Most engineering decisions are made with incomplete information — being explicit about what you don't know is rare and valuable.
Copilot · GitHub Empathy for whoever reads your code next. The best engineers write for their future colleagues, not just the compiler.
Claude · Anthropic Four answers, none of them wrong. That's exactly the signal you miss when you only ask one voice.

Works with the models you already use

API
  • Anthropic Claude
  • OpenAI GPT
  • Google Gemini
CLI
  • Claude Code
  • Codex
  • GitHub Copilot
OpenAI-compatible
  • Ollama
  • LM Studio
  • Any custom endpoint

Ready to conduct your ensemble?

Install Polyphon, add your voices, and start your first session in minutes.

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