--- a
+++ b/aitrika/config/config.py
@@ -0,0 +1,19 @@
+"""
+Default configs.
+"""
+
+from dataclasses import dataclass
+
+
+@dataclass(frozen=True)
+class Config:
+    ENTREZ_EMAIL = "mail@mail.com"
+
+
+@dataclass(frozen=True)
+class LLMConfig:
+    DEFAULT_EMBEDDINGS = "allenai/specter2_base"
+    CHUNK_SIZE = 1024
+    CHUNK_OVERLAP = 80
+    CONTEXT_WINDOW = 2048
+    NUM_OUTPUT = 256