{"version":"2.1.283","anchor":"background-agents-go-back-to-the-primary-model-when-the-main","canonical_anchor":"background-agents-go-back-to-the-primary-model-when-the-main","heading":"Background agents use the main model when your session is on a backup","tier":"notice","area":"Background Tasks","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283\/e\/background-agents-go-back-to-the-primary-model-when-the-main","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.283","markdown":"### Background agents use the main model when your session is on a backup\n\nIf the session has switched to a backup model, background agents now get the main model back when it is available\n\n**Unclear.** How often a session is actually running on a backup model is unclear.\n\n**What**\n\nWhen the model you normally use is unavailable, a session can switch to a backup model (see `fallbackModel`). Background agents, the helpers Claude Code runs alongside your conversation, used to take whatever model the session was using, including the backup.\n\nNow, if the session is on its backup model, each new background agent is given the main model instead, as long as that model passes the check for availability and access. Otherwise the agent uses the session's current model.\n\n**Why**\n\nA temporary switch to a backup model no longer moves every background agent onto the backup too.\n\n- Area: Background Tasks\n- Names: `fallbackModel`\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 1\/5"}