> ## Documentation Index
> Fetch the complete documentation index at: https://handbook.sutro.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# Routers and Ensembles

> When routing, escalation, majority voting, or multiple-model approaches are worth the complexity.

## Routers and ensembles

Some teams will take a [routing-based approach](/patterns/consistency/confidence-scores), starting with a small model, and escalating to larger and more powerful models if needed.

Others will use [ensembles](/patterns/consistency/ensembles) - a variety of different models all performing the same task, and then using some kind of majority voting logic to decide on a final answer.

While these approaches can be viable, we recommend choosing [one strong model](/deployment/model-selection/performance-tradeoffs) for the task at hand. In some cases the right answer here may be a mixture-of-experts (MoE) type model, which already uses router/ensemble logic as part of its architecture.