diff --git a/99 Daily/2026-04-15.md b/99 Daily/2026-04-15.md
index c4efa6c..153b9c7 100644
--- a/99 Daily/2026-04-15.md	
+++ b/99 Daily/2026-04-15.md	
@@ -174,3 +174,6 @@ tags: [daily]
 - 15:56 | `hp-prod-tracker`
   - **Asked:** (Haiku error: HTTP Error 500: Internal Server Error)
   - **Done:** —
+- 15:58 (<1min) | `aimpress`
+  - **Asked:** Why is cache writing only done through Sonnet and not Haiku?
+  - **Done:** Identified that Haiku model was used for input/output but had zero cache write operations, while cache writing would require Sonnet model.