diff --git a/libs/partners/deepseek/langchain_deepseek/data/_profiles.py b/libs/partners/deepseek/langchain_deepseek/data/_profiles.py
index 6407c9b5456..df496daf7e7 100644
--- a/libs/partners/deepseek/langchain_deepseek/data/_profiles.py
+++ b/libs/partners/deepseek/langchain_deepseek/data/_profiles.py
@@ -56,4 +56,25 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "attachment": True,
         "temperature": True,
     },
+    "deepseek-v4-pro": {
+        "name": "DeepSeek V4 Pro",
+        "release_date": "2026-04-24",
+        "last_updated": "2026-04-24",
+        "open_weights": True,
+        "max_input_tokens": 1000000,
+        "max_output_tokens": 384000,
+        "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": True,
+        "attachment": True,
+        "temperature": True,
+    },
 }
diff --git a/libs/partners/openai/langchain_openai/data/_profiles.py b/libs/partners/openai/langchain_openai/data/_profiles.py
index ec8eea75008..d321bc9a14a 100644
--- a/libs/partners/openai/langchain_openai/data/_profiles.py
+++ b/libs/partners/openai/langchain_openai/data/_profiles.py
@@ -899,6 +899,32 @@ _PROFILES: dict[str, dict[str, Any]] = {
         "image_tool_message": True,
         "tool_choice": True,
     },
+    "gpt-5.5": {
+        "name": "GPT-5.5",
+        "release_date": "2026-04-23",
+        "last_updated": "2026-04-23",
+        "open_weights": False,
+        "max_input_tokens": 1050000,
+        "max_output_tokens": 130000,
+        "text_inputs": True,
+        "image_inputs": True,
+        "audio_inputs": False,
+        "pdf_inputs": True,
+        "video_inputs": False,
+        "text_outputs": True,
+        "image_outputs": False,
+        "audio_outputs": False,
+        "video_outputs": False,
+        "reasoning_output": True,
+        "tool_calling": True,
+        "structured_output": True,
+        "attachment": True,
+        "temperature": False,
+        "image_url_inputs": True,
+        "pdf_tool_message": True,
+        "image_tool_message": True,
+        "tool_choice": True,
+    },
     "gpt-image-1": {
         "name": "gpt-image-1",
         "release_date": "2025-04-24",