diff --git a/README.md b/README.md
index c47a9eb..43d3b98 100755
--- a/README.md
+++ b/README.md
@@ -213,13 +213,13 @@ Exceptions:
 ## 1. chat() - AI chat
 
 ```python
-def chat(self, keywords: str, model: str = "gpt-4o-mini", timeout: int = 30) -> str:
+def chat(self, keywords: str, model: str = "o3-mini", timeout: int = 30) -> str:
     """Initiates a chat session with DuckDuckGo AI.
 
     Args:
         keywords (str): The initial message or question to send to the AI.
-        model (str): The model to use: "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b".
-            Defaults to "gpt-4o-mini".
+        model (str): The model to use: "o3-mini", "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b".
+            Defaults to "o3-mini".
         timeout (int): Timeout value for the HTTP client. Defaults to 30.
 
     Returns:
diff --git a/duckduckgo_search/cli.py b/duckduckgo_search/cli.py
index 7e697ff..45f55c6 100644
--- a/duckduckgo_search/cli.py
+++ b/duckduckgo_search/cli.py
@@ -150,19 +150,20 @@ def version():
     "-m",
     "--model",
     prompt="""DuckDuckGo AI chat. Choose a model:
-[1]: gpt-4o-mini
-[2]: claude-3-haiku
-[3]: llama-3.1-70b
-[4]: mixtral-8x7b
+[1]: o3-mini
+[2]: gpt-4o-mini
+[3]: claude-3-haiku
+[4]: llama-3.1-70b
+[5]: mixtral-8x7b
 """,
-    type=click.Choice(["1", "2", "3", "4"]),
+    type=click.Choice(["1", "2", "3", "4", "5"]),
     show_choices=False,
     default="1",
 )
 def chat(load, proxy, multiline, timeout, verify, model):
     """CLI function to perform an interactive AI chat using DuckDuckGo API."""
     client = DDGS(proxy=_expand_proxy_tb_alias(proxy), verify=verify)
-    model = ["gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b"][int(model) - 1]
+    model = ["o3-mini", "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b"][int(model) - 1]
 
     cache_file = "ddgs_chat_conversation.json"
     if load and Path(cache_file).exists():
diff --git a/duckduckgo_search/duckduckgo_search.py b/duckduckgo_search/duckduckgo_search.py
index b1abb9e..3d4d742 100644
--- a/duckduckgo_search/duckduckgo_search.py
+++ b/duckduckgo_search/duckduckgo_search.py
@@ -136,12 +136,12 @@ def _get_vqd(self, keywords: str) -> str:
         resp_content = self._get_url("GET", "https://duckduckgo.com", params={"q": keywords})
         return _extract_vqd(resp_content, keywords)
 
-    def chat(self, keywords: str, model: str = "gpt-4o-mini", timeout: int = 30) -> str:
+    def chat(self, keywords: str, model: str = "o3-mini", timeout: int = 30) -> str:
         """Initiates a chat session with DuckDuckGo AI.
 
         Args:
             keywords (str): The initial message or question to send to the AI.
-            model (str): The model to use: "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b".
+            model (str): The model to use: "o3-mini", "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b".
                 Defaults to "gpt-4o-mini".
             timeout (int): Timeout value for the HTTP client. Defaults to 20.
 
@@ -156,6 +156,7 @@ def chat(self, keywords: str, model: str = "gpt-4o-mini", timeout: int = 30) ->
             logger.info(f"{model=} is deprecated, using {models_deprecated[model]}")
             model = models_deprecated[model]
         models = {
+            "o3-mini": "o3-mini",
             "claude-3-haiku": "claude-3-haiku-20240307",
             "gpt-4o-mini": "gpt-4o-mini",
             "llama-3.1-70b": "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
diff --git a/tests/test_duckduckgo_search.py b/tests/test_duckduckgo_search.py
index 198b930..2f8ce5b 100644
--- a/tests/test_duckduckgo_search.py
+++ b/tests/test_duckduckgo_search.py
@@ -15,7 +15,7 @@ def test_context_manager():
         assert 20 <= len(results) <= 30
 
 
-@pytest.mark.parametrize("model", ["gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b"])
+@pytest.mark.parametrize("model", ["o3-mini", "gpt-4o-mini", "claude-3-haiku", "llama-3.1-70b", "mixtral-8x7b"])
 def test_chat(model):
     results = DDGS().chat("cat", model=model)
     assert  len(results) >= 1