diff --git a/packages/opencode/src/plugin/openai/codex.ts b/packages/opencode/src/plugin/openai/codex.ts
index 93c22ea6a..c13a9c439 100644
--- a/packages/opencode/src/plugin/openai/codex.ts
+++ b/packages/opencode/src/plugin/openai/codex.ts
@@ -13,6 +13,7 @@ const CODEX_API_ENDPOINT = "https://chatgpt.com/backend-api/codex/responses"
 const OAUTH_PORT = 1455
 const OAUTH_POLLING_SAFETY_MARGIN_MS = 3000
 const ALLOWED_MODELS = new Set(["gpt-5.5", "gpt-5.3-codex-spark", "gpt-5.4", "gpt-5.4-mini"])
+const DISALLOWED_MODELS = new Set(["gpt-5.5-pro"])
 
 interface PkceCodes {
   verifier: string
@@ -370,6 +371,7 @@ export async function CodexAuthPlugin(input: PluginInput, options: CodexAuthPlug
           Object.entries(provider.models)
             .filter(([, model]) => {
               if (ALLOWED_MODELS.has(model.api.id)) return true
+              if (DISALLOWED_MODELS.has(model.api.id)) return false
               const match = model.api.id.match(/^gpt-(\d+\.\d+)/)
               return match ? parseFloat(match[1]) > 5.4 : false
             })