diff --git a/chatmastermind/api_client.py b/chatmastermind/api_client.py
index 2ff8c59..b9b0d05 100644
--- a/chatmastermind/api_client.py
+++ b/chatmastermind/api_client.py
@@ -5,6 +5,17 @@ def openai_api_key(api_key: str) -> None:
     openai.api_key = api_key
 
 
+def display_models() -> None:
+    not_ready = []
+    for engine in sorted(openai.Engine.list()['data'], key=lambda x: x['id']):
+        if engine['ready']:
+            print(engine['id'])
+        else:
+            not_ready.append(engine['id'])
+    if len(not_ready) > 0:
+        print('\nNot ready: ' + ', '.join(not_ready))
+
+
 def ai(chat: list[dict[str, str]],
        config: dict,
        number: int
diff --git a/chatmastermind/main.py b/chatmastermind/main.py
index 01cc038..68fe906 100755
--- a/chatmastermind/main.py
+++ b/chatmastermind/main.py
@@ -9,7 +9,7 @@ import argparse
 import pathlib
 from .utils import terminal_width, process_tags, display_chat, display_source_code, display_tags_frequency
 from .storage import save_answers, create_chat, get_tags, get_tags_unique, read_file, dump_data
-from .api_client import ai, openai_api_key
+from .api_client import ai, openai_api_key, display_models
 from itertools import zip_longest
 
 
@@ -97,6 +97,7 @@ def create_parser() -> argparse.ArgumentParser:
     group.add_argument('-D', '--chat-dump', help="Print chat history as Python structure", action='store_true')
     group.add_argument('-d', '--chat', help="Print chat history as readable text", action='store_true')
     group.add_argument('-l', '--list-tags', help="List all tags and their frequency", action='store_true')
+    group.add_argument('-L', '--list-models', help="List all available models", action='store_true')
     parser.add_argument('-c', '--config', help='Config file name.', default=default_config)
     parser.add_argument('-m', '--max-tokens', help='Max tokens to use', type=int)
     parser.add_argument('-T', '--temperature', help='Temperature to use', type=float)
@@ -149,6 +150,8 @@ def main() -> int:
         process_and_display_chat(args, config)
     elif args.list_tags:
         process_and_display_tags(args, config)
+    elif args.list_models:
+        display_models()
 
     return 0