diff --git a/apps/desktop/src/renderer/lib/dev-chat.ts b/apps/desktop/src/renderer/lib/dev-chat.ts
index 0ccdb0608e1..2fcec6919e6 100644
--- a/apps/desktop/src/renderer/lib/dev-chat.ts
+++ b/apps/desktop/src/renderer/lib/dev-chat.ts
@@ -23,6 +23,11 @@ export const DEV_CHAT_MODELS: ModelOption[] = [
 		name: "Haiku 4.5",
 		provider: "Anthropic",
 	},
+	{
+		id: "openai/gpt-5.5",
+		name: "GPT-5.5",
+		provider: "OpenAI",
+	},
 	{
 		id: "openai/gpt-5.4",
 		name: "GPT-5.4",
diff --git a/packages/trpc/src/router/chat/chat.ts b/packages/trpc/src/router/chat/chat.ts
index 632e16359fa..3e48e3a1bb4 100644
--- a/packages/trpc/src/router/chat/chat.ts
+++ b/packages/trpc/src/router/chat/chat.ts
@@ -29,6 +29,11 @@ const AVAILABLE_MODELS = [
 		name: "Haiku 4.5",
 		provider: "Anthropic",
 	},
+	{
+		id: "openai/gpt-5.5",
+		name: "GPT-5.5",
+		provider: "OpenAI",
+	},
 	{
 		id: "openai/gpt-5.4",
 		name: "GPT-5.4",