diff --git a/src/paper_query/constants/__init__.py b/src/paper_query/constants/__init__.py
index 77efa44..c777d87 100644
--- a/src/paper_query/constants/__init__.py
+++ b/src/paper_query/constants/__init__.py
@@ -1,11 +1,12 @@
 from ._api_keys import GROQ_API_KEY, HUGGINGFACE_API_KEY, OPENAI_API_KEY
+from ._constants import MODEL_PROVIDER_MAP, RAG_DOC_ID
 from ._paths import PERSIST_DIRECTORY, assets_dir, data_dir, project_dir, src_dir, test_dir
-from ._strings import RAG_DOC_ID
 
 __all__ = [
     "OPENAI_API_KEY",
     "HUGGINGFACE_API_KEY",
     "GROQ_API_KEY",
+    "MODEL_PROVIDER_MAP",
     "PERSIST_DIRECTORY",
     "project_dir",
     "src_dir",
diff --git a/src/paper_query/constants/_constants.py b/src/paper_query/constants/_constants.py
new file mode 100644
index 0000000..05ce492
--- /dev/null
+++ b/src/paper_query/constants/_constants.py
@@ -0,0 +1,7 @@
+MODEL_PROVIDER_MAP = {
+    "llama-3.1-8b-instant": "groq",
+    "gpt-4o": "openai",
+    "gpt-4o-mini": "openai",
+}
+
+RAG_DOC_ID = "file"
diff --git a/src/paper_query/ui/components/sidebar_inputs.py b/src/paper_query/ui/components/sidebar_inputs.py
index 2f39400..608fd5e 100644
--- a/src/paper_query/ui/components/sidebar_inputs.py
+++ b/src/paper_query/ui/components/sidebar_inputs.py
@@ -3,7 +3,7 @@
 
 import streamlit as st
 
-from paper_query.constants import assets_dir
+from paper_query.constants import MODEL_PROVIDER_MAP, assets_dir
 
 
 def get_class_params(cls) -> list[str]:
@@ -12,19 +12,15 @@ def get_class_params(cls) -> list[str]:
     return [
         name
         for name in params.keys()
-        if name
-        in ("model_name", "model_provider", "paper_path", "references_dir", "github_repo_url")
+        if name in ("model_name", "paper_path", "references_dir", "github_repo_url")
     ]
 
 
-def model_name_input(name: str = "gpt-4o") -> str:
+def model_name_input() -> str:
     """Get the model name from the sidebar."""
-    return st.sidebar.text_input("Model Name", value=name, key="model_name_input")
-
-
-def model_provider_input(provider: str = "openai") -> str:
-    """Get the model provider from the sidebar."""
-    return st.sidebar.text_input("Model Provider", value=provider, key="model_provider_input")
+    return st.sidebar.selectbox(
+        "Choose a model:", list(MODEL_PROVIDER_MAP.keys()), key="model_name_input"
+    )
 
 
 def paper_path_input() -> str:
@@ -62,7 +58,7 @@ def get_param(param: str) -> str | list[str]:
     """Get the parameter value from the sidebar."""
     param_functions = {
         "model_name": model_name_input,
-        "model_provider": model_provider_input,
+        # "model_provider": determined in get_chatbot_params
         "paper_path": paper_path_input,
         "references_dir": references_input,
         "github_repo_url": code_dir_input,
@@ -75,4 +71,11 @@ def get_param(param: str) -> str | list[str]:
 def get_chatbot_params(selected_chatbot_class: type) -> dict:
     """Get the chatbot parameters from the sidebar."""
     chatbot_params = get_class_params(selected_chatbot_class)
-    return {param: get_param(param) for param in chatbot_params}
+    params = {param: get_param(param) for param in chatbot_params}
+
+    # Get the model provider based on the selected model name
+    if params["model_name"] not in MODEL_PROVIDER_MAP.keys():
+        raise ValueError(f"Provider not found for {params['model_name']} in MODEL_PROVIDER_MAP.")
+    params["model_provider"] = MODEL_PROVIDER_MAP[params["model_name"]]
+
+    return params