diff --git a/scripts/e2e/parallels-linux-smoke.sh b/scripts/e2e/parallels-linux-smoke.sh
index f9c9283a665..d56a3a96d27 100644
--- a/scripts/e2e/parallels-linux-smoke.sh
+++ b/scripts/e2e/parallels-linux-smoke.sh
@@ -106,7 +106,7 @@ Options:
   --provider <openai|anthropic|minimax>
                              Provider auth/model lane. Default: openai
   --model <provider/model>    Override the model used for the agent-turn smoke.
-                             Default: openai/gpt-5.4 for the OpenAI lane
+                             Default: openai/gpt-5.5 for the OpenAI lane
   --api-key-env <var>        Host env var name for provider API key.
                              Default: OPENAI_API_KEY for openai, ANTHROPIC_API_KEY for anthropic
   --openai-api-key-env <var> Alias for --api-key-env (backward compatible)
diff --git a/scripts/e2e/parallels-macos-smoke.sh b/scripts/e2e/parallels-macos-smoke.sh
index 3763250d6b8..53a7f873153 100644
--- a/scripts/e2e/parallels-macos-smoke.sh
+++ b/scripts/e2e/parallels-macos-smoke.sh
@@ -144,7 +144,7 @@ Options:
   --provider <openai|anthropic|minimax>
                              Provider auth/model lane. Default: openai
   --model <provider/model>    Override the model used for the agent-turn smoke.
-                             Default: openai/gpt-5.4 for the OpenAI lane
+                             Default: openai/gpt-5.5 for the OpenAI lane
   --api-key-env <var>        Host env var name for provider API key.
                              Default: OPENAI_API_KEY for openai, ANTHROPIC_API_KEY for anthropic
   --openai-api-key-env <var> Alias for --api-key-env (backward compatible)
diff --git a/scripts/e2e/parallels-npm-update-smoke.sh b/scripts/e2e/parallels-npm-update-smoke.sh
index 62448325cc1..d37e8376f65 100755
--- a/scripts/e2e/parallels-npm-update-smoke.sh
+++ b/scripts/e2e/parallels-npm-update-smoke.sh
@@ -122,7 +122,7 @@ Options:
   --provider <openai|anthropic|minimax>
                              Provider auth/model lane. Default: openai
   --model <provider/model>    Override the model used for agent-turn smoke checks.
-                             Default: openai/gpt-5.4 for the OpenAI lane
+                             Default: openai/gpt-5.5 for the OpenAI lane
   --api-key-env <var>        Host env var name for provider API key.
                              Default: OPENAI_API_KEY for openai, ANTHROPIC_API_KEY for anthropic
   --openai-api-key-env <var> Alias for --api-key-env (backward compatible)
diff --git a/scripts/e2e/parallels-windows-smoke.sh b/scripts/e2e/parallels-windows-smoke.sh
index 591c7c91972..ca6a4bab805 100644
--- a/scripts/e2e/parallels-windows-smoke.sh
+++ b/scripts/e2e/parallels-windows-smoke.sh
@@ -140,7 +140,7 @@ Options:
   --provider <openai|anthropic|minimax>
                              Provider auth/model lane. Default: openai
   --model <provider/model>    Override the model used for the agent-turn smoke.
-                             Default: openai/gpt-5.4 for the OpenAI lane
+                             Default: openai/gpt-5.5 for the OpenAI lane
   --api-key-env <var>        Host env var name for provider API key.
                              Default: OPENAI_API_KEY for openai, ANTHROPIC_API_KEY for anthropic
   --openai-api-key-env <var> Alias for --api-key-env (backward compatible)