diff --git a/providers/opencode/models/gpt-5-nano.toml b/providers/opencode/models/gpt-5-nano.toml
index c90686a94..60249582a 100644
--- a/providers/opencode/models/gpt-5-nano.toml
+++ b/providers/opencode/models/gpt-5-nano.toml
@@ -10,10 +10,9 @@ structured_output = true
 open_weights = false
 
 [cost]
-input = 0.05
-output = 0.4
-reasoning = 0.4
-cache_read = 0.005
+input = 0
+output = 0
+cache_read = 0
 
 [limit]
 context = 400_000