diff --git a/libs/partners/openrouter/langchain_openrouter/data/_profiles.py b/libs/partners/openrouter/langchain_openrouter/data/_profiles.py
index 595f37de81..aa487a362d 100644
--- a/libs/partners/openrouter/langchain_openrouter/data/_profiles.py
+++ b/libs/partners/openrouter/langchain_openrouter/data/_profiles.py
@@ -1967,7 +1967,7 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "last_updated": "2026-04-02",
         "open_weights": True,
         "max_input_tokens": 262144,
-        "max_output_tokens": 262144,
+        "max_output_tokens": 16384,
         "text_inputs": True,
         "image_inputs": True,
         "audio_inputs": False,
@@ -6004,7 +6004,7 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "last_updated": "2025-09",
         "open_weights": True,
         "max_input_tokens": 262144,
-        "max_output_tokens": 262144,
+        "max_output_tokens": 16384,
         "text_inputs": True,
         "image_inputs": False,
         "audio_inputs": False,
@@ -6202,7 +6202,7 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "last_updated": "2026-02-23",
         "open_weights": True,
         "max_input_tokens": 262144,
-        "max_output_tokens": 81920,
+        "max_output_tokens": 262144,
         "text_inputs": True,
         "image_inputs": True,
         "audio_inputs": False,
@@ -6378,7 +6378,7 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "last_updated": "2026-04-22",
         "open_weights": True,
         "max_input_tokens": 262144,
-        "max_output_tokens": 262144,
+        "max_output_tokens": 65536,
         "text_inputs": True,
         "image_inputs": True,
         "audio_inputs": False,
@@ -7572,8 +7572,8 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "release_date": "2026-06-13",
         "last_updated": "2026-06-13",
         "open_weights": True,
-        "max_input_tokens": 128000,
-        "max_output_tokens": 128000,
+        "max_input_tokens": 256000,
+        "max_output_tokens": 256000,
         "text_inputs": True,
         "image_inputs": False,
         "audio_inputs": False,
@@ -7583,7 +7583,29 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "audio_outputs": False,
         "video_outputs": False,
         "reasoning_output": True,
-        "tool_calling": False,
+        "tool_calling": True,
+        "structured_output": True,
+        "attachment": False,
+        "temperature": True,
+        "tool_call_streaming": True,
+    },
+    "z-ai/glm-5.3": {
+        "name": "GLM-5.3",
+        "release_date": "2026-08-14",
+        "last_updated": "2026-08-14",
+        "open_weights": False,
+        "max_input_tokens": 1048576,
+        "max_output_tokens": 131072,
+        "text_inputs": True,
+        "image_inputs": False,
+        "audio_inputs": False,
+        "video_inputs": False,
+        "text_outputs": True,
+        "image_outputs": False,
+        "audio_outputs": False,
+        "video_outputs": False,
+        "reasoning_output": True,
+        "tool_calling": True,
         "structured_output": False,
         "attachment": False,
         "temperature": True,
@@ -7709,7 +7731,7 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "last_updated": "2026-08-01",
         "open_weights": False,
         "max_input_tokens": 1310720,
-        "max_output_tokens": 384000,
+        "max_output_tokens": 262144,
         "text_inputs": True,
         "image_inputs": False,
         "audio_inputs": False,