diff --git a/packages/ai/src/steps/analyst-step.ts b/packages/ai/src/steps/analyst-step.ts
index 84a65d871..549817b4f 100644
--- a/packages/ai/src/steps/analyst-step.ts
+++ b/packages/ai/src/steps/analyst-step.ts
@@ -59,7 +59,7 @@ const outputSchema = z.object({
 });
 
 const DEFAULT_CACHE_OPTIONS = {
-  anthropic: { cacheControl: { type: 'ephemeral', ttl: '1hr' } },
+  anthropic: { cacheControl: { type: 'ephemeral', ttl: '1h' } },
 };
 
 /**
diff --git a/packages/ai/src/steps/think-and-prep-step.ts b/packages/ai/src/steps/think-and-prep-step.ts
index 8e81478c9..8b8d112ce 100644
--- a/packages/ai/src/steps/think-and-prep-step.ts
+++ b/packages/ai/src/steps/think-and-prep-step.ts
@@ -64,7 +64,7 @@ type BusterChatMessageResponse = z.infer<typeof BusterChatMessageResponseSchema>
 const outputSchema = ThinkAndPrepOutputSchema;
 
 const DEFAULT_CACHE_OPTIONS = {
-  anthropic: { cacheControl: { type: 'ephemeral', ttl: '1hr' } },
+  anthropic: { cacheControl: { type: 'ephemeral', ttl: '1h' } },
 };
 
 // Helper function to create the result object