diff --git a/api/core/rag/entities/__init__.py b/api/core/rag/entities/__init__.py
new file mode 100644
index 0000000000..f8157571b3
--- /dev/null
+++ b/api/core/rag/entities/__init__.py
@@ -0,0 +1,15 @@
+from core.rag.entities.citation_metadata import RetrievalSourceMetadata
+from core.rag.entities.context_entities import DocumentContext
+from core.rag.entities.processing_entities import ParentMode, PreProcessingRule, Rule, Segmentation
+from core.rag.entities.retrieval_settings import KeywordSetting, VectorSetting
+
+__all__ = [
+    "DocumentContext",
+    "KeywordSetting",
+    "ParentMode",
+    "PreProcessingRule",
+    "RetrievalSourceMetadata",
+    "Rule",
+    "Segmentation",
+    "VectorSetting",
+]
diff --git a/api/core/rag/entities/processing_entities.py b/api/core/rag/entities/processing_entities.py
new file mode 100644
index 0000000000..1b54444a19
--- /dev/null
+++ b/api/core/rag/entities/processing_entities.py
@@ -0,0 +1,27 @@
+from enum import StrEnum
+from typing import Literal
+
+from pydantic import BaseModel
+
+
+class ParentMode(StrEnum):
+    FULL_DOC = "full-doc"
+    PARAGRAPH = "paragraph"
+
+
+class PreProcessingRule(BaseModel):
+    id: str
+    enabled: bool
+
+
+class Segmentation(BaseModel):
+    separator: str = "\n"
+    max_tokens: int
+    chunk_overlap: int = 0
+
+
+class Rule(BaseModel):
+    pre_processing_rules: list[PreProcessingRule] | None = None
+    segmentation: Segmentation | None = None
+    parent_mode: Literal["full-doc", "paragraph"] | None = None
+    subchunk_segmentation: Segmentation | None = None
diff --git a/api/core/rag/entities/retrieval_settings.py b/api/core/rag/entities/retrieval_settings.py
new file mode 100644
index 0000000000..f52e0f0142
--- /dev/null
+++ b/api/core/rag/entities/retrieval_settings.py
@@ -0,0 +1,19 @@
+from pydantic import BaseModel
+
+
+class VectorSetting(BaseModel):
+    """
+    Vector Setting.
+    """
+
+    vector_weight: float
+    embedding_provider_name: str
+    embedding_model_name: str
+
+
+class KeywordSetting(BaseModel):
+    """
+    Keyword Setting.
+    """
+
+    keyword_weight: float