A few weeks ago I wrote here that I had switched to Claude Code as my primary tool and that I was running 6 projects out of one terminal window. Well. That is already old. Not because it stopped working -- because it got too small for what I needed. Today I do not run ONE agent. I run a FLEET. The name we gave it is the command room. And the idea is easy to say and hard to do: instead of being the person typing prompts at an assistant, I become the person who COORDINATES a team of AI agents, each on a lane, each possibly a different model, all working at the same time. HOW IT IS SET UP: There is a coordinator that does not write product code. It only plans, splits the work into parallelizable chunks, dispatches, validates and integrates. It is the DECISION bottleneck, not the execution one. If it starts coding, the whole fleet stops scaling. Below it come the builders. One model for implementation volume. One for architecture and heavy review. One for cheap adversarial audits. Each task goes to the model that performs best on THAT kind of work -- there is no "best model," there is the best model for THIS task. Each builder works in an isolated worktree. One writer per file. Many readers per repo. This is not a detail -- it is the only thing that stops two agents from writing to the same file and turning the day into merge-conflict hell. WHAT CHANGES WHEN YOU THINK THIS WAY: It stops being "how do I solve this problem" and becomes "who solves it, and how do I make sure the result is any good." The engineering work migrates from the keyboard to the DESIGN of the system. Which lanes exist. Who has permission to merge what. Where the gates are. What needs human approval and what can go on its own. And cost becomes a project variable. Putting the most expensive model on everything is burning money. Putting the cheapest on everything is accepting bugs. The trick is ROUTING: coordination on the cheapest model that can handle it, architecture and money on the strongest, volume in the middle. And it is not just me doing this. The whole field turned this way in 2026. Cursor shipped a mode to run tasks in parallel, Windsurf folded in Devin, OpenAI's Codex became a cloud agent that runs on its own. Just last week OpenAI shipped GPT-5.5 with "agentic coding" on the cover, and DeepSeek dropped V4 open-source aiming at the same agent benchmarks with a 1M-token context. Everyone arrived at the same conclusion at the same time: one agent is nice, a FLEET orchestrated in parallel is another level. WHAT I LEARNED FAST: A fleet without gates is just faster chaos. At first I thought I would only gain speed, and I did -- but I also gained the ability to generate garbage in parallel. The answer was not to slow the fleet down. It was to build the gates: cross-review, validation before merge, a human gate for anything that touches money or the customer. This is not the future arriving. It is the present being uncomfortable. I am still figuring out the rules as I run it. But I cannot go back to ONE terminal window. It would be like going back to writing with one hand.