diff --git a/src/validation/mod.rs b/src/validation/mod.rs
index aed2ea8..9bed468 100644
--- a/src/validation/mod.rs
+++ b/src/validation/mod.rs
@@ -64,10 +64,12 @@ pub static GENERATE_CONTENT_TEST_BODY: LazyLock<Value> = LazyLock::new(|| {
 
 // LazyLock for the cached content test body used in cache API validation
 pub static CACHE_CONTENT_TEST_BODY: LazyLock<GeminiRequest> = LazyLock::new(|| {
-    // Generate random text content to meet the minimum 1024 tokens requirement for cache API
-    let long_text = "You are an expert at analyzing transcripts.".repeat(150);
+    // Generate random text content to meet the minimum 2048 tokens requirement for cache API
+    // models/gemini-2.5-flash need 1024 tokens
+    // models/gemini-2.5-flash-lite need 2048 tokens
+    let long_text = "You are an expert at analyzing transcripts.".repeat(260);
     GeminiRequest {
-        model: Some("models/gemini-2.5-flash".to_string()),
+        model: Some("models/gemini-2.5-flash-lite".to_string()),
         contents: vec![ContentPart {
             parts: vec![TextPart { text: long_text }],
             role: Some("user".to_string()),