diff --git a/providers/opencode/models/gpt-5.5.toml b/providers/opencode/models/gpt-5.5.toml
index ae1a42d2fac..b8cf4ec1e09 100644
--- a/providers/opencode/models/gpt-5.5.toml
+++ b/providers/opencode/models/gpt-5.5.toml
@@ -1,4 +1,5 @@
 base_model = "openai/gpt-5.5"
+reasoning_options = [{ type = "effort", values = ["none", "low", "medium", "high", "xhigh"] }]
 
 [cost]
 input = 5
diff --git a/providers/opencode/models/gpt-5.toml b/providers/opencode/models/gpt-5.toml
index 54bbf7c1ac3..04e2f445620 100644
--- a/providers/opencode/models/gpt-5.toml
+++ b/providers/opencode/models/gpt-5.toml
@@ -4,6 +4,7 @@ release_date = "2025-08-07"
 last_updated = "2025-08-07"
 attachment = true
 reasoning = true
+reasoning_options = [{ type = "effort", values = ["minimal", "low", "medium", "high"] }]
 temperature = false
 knowledge = "2024-09-30"
 tool_call = true