AgentsRoom Default model: pick your AI model once, every new agent starts on it
A real session, filmed in the app: an agent left on Default starts on the model Claude Code picks, Opus 5.5. In Settings > AI providers, on the Claude tab, Sonnet 5.5 is picked under Default model, with nothing else to save. The next agent, also left on Default, starts on Sonnet 5.5, while the first one keeps Opus 5.5: the setting is read when an agent starts.
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Pick a model once, and every new agent starts on it. This is AgentsRoom, the desktop app where your AI coding agents work side by side. When I add an agent, I rarely choose its model.
I leave it on Default. So it starts on whatever the CLI picks. Here, Claude Code chose Opus 5.5.
To choose it myself, I open Settings, AI providers, on the Claude tab. Under the list of models sits Default model. Left empty, the CLI keeps its own choice.
I pick Sonnet 5.5. Nothing else to save, and it follows my account on every computer. Now I add another agent, and again I leave its model on Default.
This time it starts on Sonnet 5.5, the model I just picked, with nothing set on the agent itself. The first agent still runs Opus 5.5: the setting is read when an agent starts, never in the middle of its work. And every new agent left on Default starts on Sonnet 5.5.
One default per CLI, for Claude Code, Codex and the others. Default model is in AgentsRoom, under Settings, AI providers. The link is in the description.