Model and effort

Every session runs on one model at one reasoning effort. Together they set how thorough or how fast the session is.

Model

/model switches the session between three models: Fable, Opus, and Sonnet.

Fable is the default and the right choice for deal work: it's the most thorough, and it often takes longer to respond. Sonnet is the fastest; use it when you want quick answers more than depth. Opus is the middle option: use it when Fable's pauses are too long for the task but you want more depth than Sonnet.

The choice is per-session: it holds for the rest of the current session, and new sessions open on Fable.

Effort

/effort sets how much reasoning the model puts into each response: high, xhigh, or max. Sessions start at high; raise it for the hardest problems, and expect slower, more deliberate responses when you do.

To show or hide the terminal's thinking display, use /show-thinking.

Learn more

• While the terminal works: what long pauses look like and when to worry.
• Model provider: the choice, for the whole organization, of which service processes model requests, set by an admin.