diff --git a/hive-c0re/src/hive_stats.rs b/hive-c0re/src/hive_stats.rs
index 413661d8..3951fb40 100644
--- a/hive-c0re/src/hive_stats.rs
+++ b/hive-c0re/src/hive_stats.rs
@@ -101,9 +101,10 @@ pub type PriceTable = HashMap<String, Prices>;
 /// Built-in fallback pricing, per **million** tokens. Used when the
 /// operator's [`PriceTable`] has no key matching the model. Figures are
 /// current Anthropic list prices for the Claude 4.x family (Opus 4.x,
-/// Sonnet 4.x, Haiku 4.5); `cache_write` uses the default 5-minute
-/// cache-TTL price. Keep in sync with the `services.hyperhive.modelPrices`
-/// nix default (`nix/modules/hive-c0re.nix`).
+/// Sonnet 4.x, Haiku 4.5); `cache_write` uses the 1-hour cache-TTL price,
+/// which is the default through the Claude subscription the agents run
+/// on. Keep in sync with the `services.hyperhive.modelPrices` nix default
+/// (`nix/modules/hive-c0re.nix`).
 fn builtin_prices(model: &str) -> Prices {
     let m = model.to_ascii_lowercase();
     if m.contains("opus") {
@@ -111,14 +112,14 @@ fn builtin_prices(model: &str) -> Prices {
             input: 5.0,
             output: 25.0,
             cache_read: 0.5,
-            cache_write: 6.25,
+            cache_write: 10.0,
         }
     } else if m.contains("haiku") {
         Prices {
             input: 1.0,
             output: 5.0,
             cache_read: 0.1,
-            cache_write: 1.25,
+            cache_write: 2.0,
         }
     } else {
         // sonnet + unknown fallback
@@ -126,7 +127,7 @@ fn builtin_prices(model: &str) -> Prices {
             input: 3.0,
             output: 15.0,
             cache_read: 0.3,
-            cache_write: 3.75,
+            cache_write: 6.0,
         }
     }
 }
diff --git a/nix/modules/hive-c0re.nix b/nix/modules/hive-c0re.nix
index 28013c70..05291b6d 100644
--- a/nix/modules/hive-c0re.nix
+++ b/nix/modules/hive-c0re.nix
@@ -447,27 +447,28 @@ in
         }
       );
       # Current Anthropic list prices for the Claude 4.x family (Opus
-      # 4.x, Sonnet 4.x, Haiku 4.5); cache_write is the default 5-minute
-      # cache-TTL price. Keep in sync with `builtin_prices` in
+      # 4.x, Sonnet 4.x, Haiku 4.5); cache_write is the 1-hour cache-TTL
+      # price (the default through the Claude subscription the agents run
+      # on). Keep in sync with `builtin_prices` in
       # hive-c0re/src/hive_stats.rs.
       default = {
         opus = {
           input = 5.0;
           output = 25.0;
           cache_read = 0.5;
-          cache_write = 6.25;
+          cache_write = 10.0;
         };
         sonnet = {
           input = 3.0;
           output = 15.0;
           cache_read = 0.3;
-          cache_write = 3.75;
+          cache_write = 6.0;
         };
         haiku = {
           input = 1.0;
           output = 5.0;
           cache_read = 0.1;
-          cache_write = 1.25;
+          cache_write = 2.0;
         };
       };
       example = {