# Backup chain: Koshra glossary

> The models behind a bot's main model. If a provider is down or out of credit, the next model in the chain answers.

Canonical: https://koshra.com/glossary/backup_chain
Last updated: 2026-11-02

The models behind a bot's main model. If a provider is down or out of credit, the next model in the chain answers.

Read more: https://koshra.com/docs/models_and_cost