diff --git a/webui/src/lib/zodFormUtils.ts b/webui/src/lib/zodFormUtils.ts
index 5a964bb..2e09b9c 100644
--- a/webui/src/lib/zodFormUtils.ts
+++ b/webui/src/lib/zodFormUtils.ts
@@ -1,4 +1,5 @@
 import { type CreateInstanceOptions, getAllFieldKeys } from '@/schemas/instanceOptions'
+import { on } from 'events'
 
 // Only define the basic fields we want to show by default
 export const basicFieldsConfig: Record<string, {
@@ -26,6 +27,10 @@ export const basicFieldsConfig: Record<string, {
     placeholder: '60',
     description: 'Time in minutes before instance is considered idle and stopped'
   },
+  on_demand_start: {
+    label: 'On-Demand Start',
+    description: 'Start instance upon receiving OpenAI-compatible API request'
+  },
   model: {
     label: 'Model Path',
     placeholder: '/path/to/model.gguf',
diff --git a/webui/src/schemas/instanceOptions.ts b/webui/src/schemas/instanceOptions.ts
index 08f5ae0..f3ef90b 100644
--- a/webui/src/schemas/instanceOptions.ts
+++ b/webui/src/schemas/instanceOptions.ts
@@ -7,6 +7,7 @@ export const CreateInstanceOptionsSchema = z.object({
   max_restarts: z.number().optional(),
   restart_delay: z.number().optional(),
   idle_timeout: z.number().optional(),
+  on_demand_start: z.boolean().optional(),
 
   // Common params
   verbose_prompt: z.boolean().optional(),