# How does Model Selector node process fallbacks? **URL:** \ **Category:** Questions\ **Tags:** core, langchain, ai\ **Created:** [August 21, 2025, 6:33pm UTC](https://community.n8n.io/t/how-does-model-selector-node-process-fallbacks/173287 "2025-08-21T18:33:53Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Ed\_P](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/ed_p/32/98978_2.png) [@Ed\_P](https://community.n8n.io/u/Ed_P)\ **Post date:** [August 21, 2025, 6:33pm UTC](https://community.n8n.io/t/how-does-model-selector-node-process-fallbacks/173287/1 "2025-08-21T18:33:54Z")
There is a new [Model Selector](https://docs.n8n.io/integrations/builtin/cluster-nodes/sub-nodes/n8n-nodes-langchain.modelselector/) node. Documentation says it “enables implementing fallback mechanisms for error handling“. ![image](https://europe1.discourse-cdn.com/n8n/original/3X/d/2/d2115349e9212b0a7d089c3b25856301451092aa.png) The problem is – it’s completely not clear how to use this node for implementing fallbacks. It only receives data from incoming nodes. Sub-nodes or responses are not working here. Are there any clarifications on how to create fallbacks in Model Selector? BTW, I’m not talking about built-in fallback feature inside LLM-root nodes. They only support a single fallback option. ---
**Author:** ![system](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/system/32/195824_2.png) [@system](https://community.n8n.io/u/system)\ **Post date:** [November 19, 2025, 6:34pm UTC](https://community.n8n.io/t/how-does-model-selector-node-process-fallbacks/173287/2 "2025-11-19T18:34:15Z")
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**Author:** ![Shirobachi](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/shirobachi/32/37882_2.png) [@Shirobachi](https://community.n8n.io/u/Shirobachi)\ **Post date:** [March 4, 2026, 5:58pm UTC](https://community.n8n.io/t/how-does-model-selector-node-process-fallbacks/173287/3 "2026-03-04T17:58:08Z")
Bump, I agree I have no idea how to enable that functionality, expect some tricky way like settings/on fail=error\_output and adding some logic to catch error, but I understood selected by OP docs text as builin fuctionality for this node (model selector) ---
**Author:** ![Shirobachi](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/shirobachi/32/37882_2.png) [@Shirobachi](https://community.n8n.io/u/Shirobachi)\ **Post date:** [March 4, 2026, 5:58pm UTC](https://community.n8n.io/t/how-does-model-selector-node-process-fallbacks/173287/4 "2026-03-04T17:58:48Z")