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Choose an Operator model

Updated October 8, 2026
3 min read

At a glance

TopicDetails
Best forPicking the right model tier for an Operator run before you start it.
Start hereOpen the tier picker in the Operator composer before you send your first message in a run.
OutcomeA tier that matches the job: quick and dependable for everyday print work, or stronger reasoning for demanding multi-step jobs.

Open it now

Before you start

  • The tier you pick is stored on the run. Follow-up turns in that run inherit the same tier automatically.
  • Tier choice does not change the credit price of the tools a run uses. Credits are charged per tool, not per tier.
  • If the tier you picked is unavailable when a run starts, Operator falls back to another model automatically so the run can continue.

Where to choose a tier

  • Open the model tier picker in the Operator composer before you start a run.
  • The tier you select applies to that run. Starting a new run lets you pick again.
  • Medium US is the default and the right choice for most jobs.

Choosing Sparrow or Sparrow Fast

  • Choose Sparrow when: the job is everyday print or artwork work and you want a quick, dependable run.
  • Choose Sparrow Fast when: response speed matters most for that run.
  • Skip Sparrow or Sparrow Fast when: the job is a demanding, multi-step print job that needs stronger reasoning or judgment. Use Medium US instead.

For demanding, multi-step jobs: Pick Medium US. It is the strongest tier the composer offers, and it is already the default.

Follow-up turns keep the tier: Once a run starts on a tier, later turns in that same run keep using it. Start a new run if you want to pick a different tier.

Automatic fallback: If the model behind your chosen tier is temporarily unavailable, Operator automatically falls back to another model so the run can continue.

What tier choice does not change

  • Tier choice does not change the credit price of the tools a run uses. Credits are charged per tool, the same way regardless of tier.

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