diff --git a/crates/forge_repo/src/provider/provider.json b/crates/forge_repo/src/provider/provider.json
index 27da81ff9a..702939065c 100644
--- a/crates/forge_repo/src/provider/provider.json
+++ b/crates/forge_repo/src/provider/provider.json
@@ -1298,6 +1298,16 @@
     "response_type": "OpenAI",
     "url": "https://api.z.ai/api/coding/paas/v4/chat/completions",
     "models": [
+      {
+        "id": "glm-5.3",
+        "name": "GLM-5.3",
+        "description": "Latest flagship model with 50% better coding performance than GLM-5.2 on Z.ai Code Bench, 1M context window, 128K maximum output, and always-on reasoning with low/high/max effort levels",
+        "context_length": 1048576,
+        "tools_supported": true,
+        "supports_parallel_tool_calls": true,
+        "supports_reasoning": true,
+        "input_modalities": ["text"]
+      },
       {
         "id": "glm-5.2",
         "name": "GLM-5.2",