Three to ten seats,one box
The seat count where ownership beats subscriptions, emphatically.
The maths
At three seats the payback turns. At five it is emphatic. One machine serves the whole team concurrently — chat, coding, agents — and the subscription line item simply ends.
One box, everyone on it
Concurrent serving is what this hardware is for: hundreds of tokens per second aggregate under load. Your team shares a machine, not an account.
The stack we set up for this
One box, the whole team on it:
- Open WebUI with per-person accounts — the ChatGPT your team already knows
- gpt-oss-120b for concurrent serving: 286 tok/s sustained aggregate measured
- The flagship on tap for heavy reasoning, switchable in seconds
- n8n automations calling the box as a node
The meter you stop feeding
Working-hours agent load runs $12,000–19,000/year on frontier rates. One machine at €5,360 all-in ends that line item — and adds the thing no subscription sells: nothing your team types leaves the building.