Auto is the default
Auto picks a model per message: a fast, inexpensive one for small edits, a stronger one for planning and large generations. It is available on every plan and is the right choice most of the time.
Choosing a model yourself
Paid plans turn the Auto pill into a picker. Each model lists its provider, what it is good at, and its credit multiplier — the cost of a message is the base cost multiplied by that number.
Switching models mid-project is safe. The conversation and the generated files carry over.
Deep think
The top tier adds a deep-think toggle. The model spends longer planning before it writes, which raises quality on complex requests and costs more credits.