> ## Documentation Index > Fetch the complete documentation index at: https://docs.replit.com/llms.txt > Use this file to discover all available pages before exploring further. # Use Auto Mode > Let Replit select an appropriate model for each task, then choose a model manually only when you need that control. export const ModelSelectorCardVisual = () => {["90%", "68%", "78%"].map((width, index) =>
)} ;
Auto is Replit's intelligent model routing and default model selection. It chooses an appropriate model for each task while balancing quality and cost. ## Let the task guide the model Auto is useful when you want Replit to handle model selection as the work changes. A focused request can use a lower-cost model, while a complex task may need a more capable model. Free Mode always uses Auto. In Power Mode or Max Mode, builders on Core and Pro can turn Auto off and select an available model manually. Agent settings showing Automatically choose recommended, available models, the Effort control, and Max Mode using Auto ## Learn more
Auto reference

Learn how Auto selects a model and when manual selection is available.

Open the reference →
Choose a model

Select a primary model and set its Effort when you need more control.

Continue →
When you need more control than Auto provides, continue to [Choose a model](/chat/model-selector).