diff --git a/doccano_mini/components.py b/doccano_mini/components.py
index 3bbb601..06d63a0 100644
--- a/doccano_mini/components.py
+++ b/doccano_mini/components.py
@@ -1,4 +1,8 @@
+import os
+
 import streamlit as st
+from langchain.llms import OpenAI
+from langchain.schema import BaseLanguageModel
 
 CODE = """from langchain.chains import load_chain
 
@@ -19,3 +23,19 @@ def display_download_button():
 def display_usage():
     st.header("Usage")
     st.code(CODE)
+
+
+def openai_model_form() -> BaseLanguageModel:
+    # https://platform.openai.com/docs/models/gpt-3-5
+    AVAILABLE_MODELS = (
+        "gpt-3.5-turbo",
+        "gpt-3.5-turbo-0301",
+        "text-davinci-003",
+        "text-davinci-002",
+        "code-davinci-002",
+    )
+    api_key = st.text_input("API key", value=os.environ.get("OPENAI_API_KEY", ""), type="password")
+    model_name = st.selectbox("Model", AVAILABLE_MODELS, index=2)
+    temperature = st.slider("Temperature", min_value=0.0, max_value=1.0, value=0.7, step=0.01)
+    top_p = st.slider("Top-p", min_value=0.0, max_value=1.0, value=1.0, step=0.01)
+    return OpenAI(model_name=model_name, temperature=temperature, top_p=top_p, openai_api_key=api_key)  # type:ignore
diff --git a/doccano_mini/models.py b/doccano_mini/models.py
deleted file mode 100644
index 806b101..0000000
--- a/doccano_mini/models.py
+++ /dev/null
@@ -1,8 +0,0 @@
-# https://platform.openai.com/docs/models/gpt-3-5
-AVAILABLE_MODELS = (
-    "gpt-3.5-turbo",
-    "gpt-3.5-turbo-0301",
-    "text-davinci-003",
-    "text-davinci-002",
-    "code-davinci-002",
-)
diff --git a/doccano_mini/pages/01_Text_Classification.py b/doccano_mini/pages/01_Text_Classification.py
index 71285f2..ad09d76 100644
--- a/doccano_mini/pages/01_Text_Classification.py
+++ b/doccano_mini/pages/01_Text_Classification.py
@@ -1,12 +1,12 @@
-import os
-
 import streamlit as st
 from langchain.chains import LLMChain
-from langchain.llms import OpenAI
 
-from doccano_mini.components import display_download_button, display_usage
+from doccano_mini.components import (
+    display_download_button,
+    display_usage,
+    openai_model_form,
+)
 from doccano_mini.examples import make_classification_example
-from doccano_mini.models import AVAILABLE_MODELS
 from doccano_mini.prompts import make_classification_prompt
 
 st.title("Text Classification")
@@ -24,20 +24,16 @@
     prompt.prefix = instruction
 
 st.header("Test")
-api_key = st.text_input("Enter API key", value=os.environ.get("OPENAI_API_KEY", ""), type="password")
 col1, col2 = st.columns([3, 1])
 text = col1.text_area(label="Please enter your text.", value="", height=300)
 
-# Use text-davinci-003 by default.
-model_name = col2.selectbox("Model", AVAILABLE_MODELS, index=2)
-temperature = col2.slider("Temperature", min_value=0.0, max_value=1.0, value=0.7, step=0.01)
-top_p = col2.slider("Top-p", min_value=0.0, max_value=1.0, value=1.0, step=0.01)
+with col2:
+    llm = openai_model_form()
 
 with st.expander("See your prompt"):
     st.markdown(f"```\n{prompt.format(input=text)}\n```")
 
 if st.button("Predict"):
-    llm = OpenAI(model_name=model_name, temperature=temperature, top_p=top_p, openai_api_key=api_key)  # type:ignore
     chain = LLMChain(llm=llm, prompt=prompt)
     response = chain.run(text)
     label = response.split(":")[1]
diff --git a/doccano_mini/pages/09_Task_Free.py b/doccano_mini/pages/09_Task_Free.py
index 2b9c34c..aafcbb8 100644
--- a/doccano_mini/pages/09_Task_Free.py
+++ b/doccano_mini/pages/09_Task_Free.py
@@ -1,12 +1,12 @@
-import os
-
 import streamlit as st
 from langchain.chains import LLMChain
-from langchain.llms import OpenAI
 
-from doccano_mini.components import display_download_button, display_usage
+from doccano_mini.components import (
+    display_download_button,
+    display_usage,
+    openai_model_form,
+)
 from doccano_mini.examples import make_task_free_example
-from doccano_mini.models import AVAILABLE_MODELS
 from doccano_mini.prompts import make_task_free_prompt
 
 st.title("Task Free")
@@ -31,13 +31,8 @@
 
 st.markdown(f"Your prompt\n```\n{prompt.format(**inputs)}\n```")
 
-# Use text-davinci-003 by default.
-api_key = st.text_input("Enter API key", value=os.environ.get("OPENAI_API_KEY", ""), type="password")
-model_name = st.selectbox("Model", AVAILABLE_MODELS, index=2)
-temperature = st.slider("Temperature", min_value=0.0, max_value=1.0, value=0.7, step=0.01)
-top_p = st.slider("Top-p", min_value=0.0, max_value=1.0, value=1.0, step=0.01)
+llm = openai_model_form()
 if st.button("Predict"):
-    llm = OpenAI(model_name=model_name, temperature=temperature, top_p=top_p, openai_api_key=api_key)  # type:ignore
     chain = LLMChain(llm=llm, prompt=prompt)
     response = chain.run(**inputs)
     st.text(response)