Three AIs, One Terminal: How I Built Cross-Model Live Collaboration

I asked Claude Code about the pane orchestrator. Then I asked OpenAI Codex the same question, without giving it any context about pane awareness. Codex gave me a detailed technical breakdown: the 5-phase heartbeat cycle, the KL divergence invariants, the security patches from last week, the bridge file schema. Everything. That moment made me stop and actually think about what I had built. Not a task dispatcher. Not a multi-model API wrapper. Something closer to a shared nervous system for three competing AI agents running simultaneously on the same machine. - **Claude Code** (Anthropic, Opus 4.6) across multiple panes, hooks into the OS - **OpenAI Codex CLI** (GPT-5.4) on `/dev/ttys001` in `--dangerously-full-access` mode - **Gemini CLI** (Google, Gemini 3 Pro) on `/dev/ttys009` in `--yolo` mode Each runs in its own terminal pane. Each has its own context window, its own company's model, its own personality. But they all read from the same underlying infrastructure: the same pane registry, the same task ledger, the same event bus, the same memory files. Codex has a bootstrap digest. It's a 37KB TypeScript script called `bootstrap-digest.ts` that runs at session start and reads everything: