diff --git a/README.md b/README.md
index 566a3ea..a8436d7 100644
--- a/README.md
+++ b/README.md
@@ -42,7 +42,7 @@ jobs:
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # The GITHUB_TOKEN is there by default so you just need to keep it like it is and not necessarily need to add it as secret as it will throw an error. [More Details](https://docs.github.com/en/actions/security-guides/automatic-token-authentication#about-the-github_token-secret)
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
-          OPENAI_API_MODEL: "gpt-4" # Optional: defaults to "gpt-4"
+          OPENAI_API_MODEL: "gpt-4" # Optional: defaults to "o3-mini"
           exclude: "**/*.json, **/*.md" # Optional: exclude patterns separated by commas
 ```
 
diff --git a/action.yml b/action.yml
index 976aed7..c401f3a 100644
--- a/action.yml
+++ b/action.yml
@@ -10,7 +10,7 @@ inputs:
   OPENAI_API_MODEL:
     description: "OpenAI API model."
     required: false
-    default: "gpt-4"
+    default: "o3-mini"
   exclude:
     description: "Glob patterns to exclude files from the diff analysis"
     required: false