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Pro Mode is the quality dial turned all the way up: toggling /pro pins every phase of the agent’s work — chat, research, coding, and acceptance — to the Pro model, Claude Opus 4.8.

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What it changes

Every sprint runs in phases, and each phase normally uses the default model (GLM 5.2) unless you’ve overridden it. Pro Mode overrides all of them at once: Toggle it off with /pro again and your previous per-phase settings apply.

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Credits

Pro Mode uses more credits per sprint — the Pro model costs more per token than the default. Check your remaining balance anytime with /balance, and see pricing for plan differences.
A common workflow: iterate in standard mode while shaping a feature, then flip on Pro Mode for the final production pass. You can toggle between sprints without losing any project state.

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Per-phase control with /model

If all-Opus is more than you need, /model gives you the same power with precision — pin a strong model to just the phase that matters:
The full catalog: Set a phase back to Default to return it to GLM 5.2.
For the full picture — sprint modes, effort levels, and how the model picker fits in — see Build Modes & Effort.