diff --git a/opencode.jsonc b/opencode.jsonc
index 2ed2ac6..82f396c 100644
--- a/opencode.jsonc
+++ b/opencode.jsonc
@@ -39,6 +39,12 @@
         "apiKey": "{env:AI_GATEWAY_API_KEY}"
       },
       "models": {
+        "gpt-5.5": {
+          "name": "GPT-5.5",
+          "reasoning": true,
+          "modalities": { "input": ["text", "image", "pdf"], "output": ["text"] },
+          "limit": { "context": 1050000, "input": 920000, "output": 130000 }
+        },
         "gpt-5.4": {
           "name": "GPT-5.4",
           "reasoning": true,