diff --git a/packages/openai-sdk-python/src/supermemory_openai/__init__.py b/packages/openai-sdk-python/src/supermemory_openai/__init__.py
index 8dee08fc0..15adf20c2 100644
--- a/packages/openai-sdk-python/src/supermemory_openai/__init__.py
+++ b/packages/openai-sdk-python/src/supermemory_openai/__init__.py
@@ -28,6 +28,8 @@
     get_last_user_message,
     get_conversation_content,
     convert_profile_to_markdown,
+    deduplicate_memories,
+    DeduplicatedMemories,
 )
 
 from .exceptions import (
@@ -64,6 +66,8 @@
     "get_last_user_message",
     "get_conversation_content",
     "convert_profile_to_markdown",
+    "deduplicate_memories",
+    "DeduplicatedMemories",
     # Exceptions
     "SupermemoryError",
     "SupermemoryConfigurationError",
diff --git a/packages/openai-sdk-python/src/supermemory_openai/middleware.py b/packages/openai-sdk-python/src/supermemory_openai/middleware.py
index a21492aed..e2399bb62 100644
--- a/packages/openai-sdk-python/src/supermemory_openai/middleware.py
+++ b/packages/openai-sdk-python/src/supermemory_openai/middleware.py
@@ -18,6 +18,7 @@
     get_last_user_message,
     get_conversation_content,
     convert_profile_to_markdown,
+    deduplicate_memories,
 )
 from .exceptions import (
     SupermemoryConfigurationError,
@@ -119,8 +120,11 @@ async def add_system_prompt(
         container_tag, query_text, api_key
     )
 
-    memory_count_static = len(memories_response.profile.get("static", []))
-    memory_count_dynamic = len(memories_response.profile.get("dynamic", []))
+    profile = memories_response.profile or {}
+    search_results_data = memories_response.search_results or {}
+    memory_count_static = len(profile.get("static", []))
+    memory_count_dynamic = len(profile.get("dynamic", []))
+    memory_count_search = len(search_results_data.get("results", []))
 
     logger.info(
         "Memory search completed",
@@ -133,39 +137,39 @@ async def add_system_prompt(
         },
     )
 
+    deduplicated = deduplicate_memories(
+        static=profile.get("static", []),
+        dynamic=profile.get("dynamic", []),
+        search_results=search_results_data.get("results", []),
+    )
+
+    logger.debug(
+        "Memory deduplication completed",
+        {
+            "static": {"original": memory_count_static, "deduplicated": len(deduplicated.static)},
+            "dynamic": {"original": memory_count_dynamic, "deduplicated": len(deduplicated.dynamic)},
+            "search_results": {"original": memory_count_search, "deduplicated": len(deduplicated.search_results)},
+        },
+    )
+
     profile_data = ""
     if mode != "query":
         profile_data = convert_profile_to_markdown(
             {
                 "profile": {
-                    "static": [
-                        item.get("memory", "") if isinstance(item, dict) else str(item)
-                        for item in memories_response.profile.get("static", [])
-                    ],
-                    "dynamic": [
-                        item.get("memory", "") if isinstance(item, dict) else str(item)
-                        for item in memories_response.profile.get("dynamic", [])
-                    ],
-                },
-                "searchResults": {
-                    "results": [
-                        {"memory": item.get("memory", "") if isinstance(item, dict) else str(item)}
-                        for item in memories_response.search_results.get("results", [])
-                    ],
+                    "static": deduplicated.static,
+                    "dynamic": deduplicated.dynamic,
                 },
+                "searchResults": {"results": []},
             }
         )
 
     search_results_memories = ""
-    if mode != "profile":
-        search_results = memories_response.search_results.get("results", [])
-        if search_results:
-            search_results_memories = (
-                f"Search results for user's recent message: \n"
-                + "\n".join(
-                    f"- {result.get('memory', '') if isinstance(result, dict) else str(result)}" for result in search_results
-                )
-            )
+    if mode != "profile" and deduplicated.search_results:
+        search_results_memories = (
+            "Search results for user's recent message: \n"
+            + "\n".join(f"- {memory}" for memory in deduplicated.search_results)
+        )
 
     memories = f"{profile_data}\n{search_results_memories}".strip()
 
diff --git a/packages/openai-sdk-python/src/supermemory_openai/utils.py b/packages/openai-sdk-python/src/supermemory_openai/utils.py
index d9ea68453..6858e09ee 100644
--- a/packages/openai-sdk-python/src/supermemory_openai/utils.py
+++ b/packages/openai-sdk-python/src/supermemory_openai/utils.py
@@ -187,6 +187,72 @@ def get_conversation_content(
     return "\n\n".join(conversation_parts)
 
 
+class DeduplicatedMemories:
+    """Deduplicated memory strings organized by source."""
+
+    def __init__(self, static: list[str], dynamic: list[str], search_results: list[str]):
+        self.static = static
+        self.dynamic = dynamic
+        self.search_results = search_results
+
+
+def deduplicate_memories(
+    static: Optional[list[Any]] = None,
+    dynamic: Optional[list[Any]] = None,
+    search_results: Optional[list[Any]] = None,
+) -> DeduplicatedMemories:
+    """
+    Deduplicates memory items across sources. Priority: Static > Dynamic > Search Results.
+    Same memory appearing in multiple sources is kept only in the highest-priority source.
+    """
+    static_items = static or []
+    dynamic_items = dynamic or []
+    search_items = search_results or []
+
+    def extract_memory_text(item: Any) -> Optional[str]:
+        if item is None:
+            return None
+        if isinstance(item, dict):
+            memory = item.get("memory")
+            if isinstance(memory, str):
+                trimmed = memory.strip()
+                return trimmed if trimmed else None
+            return None
+        if isinstance(item, str):
+            trimmed = item.strip()
+            return trimmed if trimmed else None
+        return None
+
+    static_memories: list[str] = []
+    seen_memories: set[str] = set()
+
+    for item in static_items:
+        memory = extract_memory_text(item)
+        if memory is not None:
+            static_memories.append(memory)
+            seen_memories.add(memory)
+
+    dynamic_memories: list[str] = []
+    for item in dynamic_items:
+        memory = extract_memory_text(item)
+        if memory is not None and memory not in seen_memories:
+            dynamic_memories.append(memory)
+            seen_memories.add(memory)
+
+    search_memories: list[str] = []
+    for item in search_items:
+        memory = extract_memory_text(item)
+        if memory is not None and memory not in seen_memories:
+            search_memories.append(memory)
+            seen_memories.add(memory)
+
+    return DeduplicatedMemories(
+        static=static_memories,
+        dynamic=dynamic_memories,
+        search_results=search_memories,
+    )
+
+
 def convert_profile_to_markdown(data: dict[str, Any]) -> str:
     """
     Convert profile data to markdown based on profile.static and profile.dynamic properties.