diff --git a/README.md b/README.md
index cd61417..6bc4031 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,7 @@ jobs:
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
+          OPENAI_MODEL: 'gpt-3.5-turbo'  ## change the model if according to your requirements
           exclude: "**/*.json, **/*.md" # Optional: exclude patterns separated by commas
 ```
 
diff --git a/action.yml b/action.yml
index 6efc5a6..b10e687 100644
--- a/action.yml
+++ b/action.yml
@@ -7,6 +7,9 @@ inputs:
   OPENAI_API_KEY:
     description: "OpenAI API key for GPT."
     required: true
+  OPENAI_MODEL:
+    description: "OpenAI model for GPT."
+    required: true
   exclude:
     description: "Glob patterns to exclude files from the diff analysis"
     required: false