diff --git a/README.md b/README.md
index 769ea766..913731dd 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,6 @@ Run the AI **without** user authorisation, 100% automated.
 Continuous mode is not recommended. 
 It is potentially dangerous and may cause your AI to run forever or carry out actions you would not usually authorise. 
 Use at your own risk.
-
 1. Run the `main.py` Python script in your terminal:
 ```
 python scripts/main.py --continuous
@@ -113,6 +112,12 @@ python scripts/main.py --continuous
 ```
 2. To exit the program, press Ctrl + C
 
+## GPT3.5 ONLY Mode
+If you don't have access to the GPT4 api, this mode will allow you to use Auto-GPT!
+```
+python scripts/main.py --gpt3only
+```
+
 ## ⚠️ Limitations
 This experiment aims to showcase the potential of GPT-4 but comes with some limitations:
 
diff --git a/scripts/main.py b/scripts/main.py
index 4230380d..c4c10f08 100644
--- a/scripts/main.py
+++ b/scripts/main.py
@@ -258,6 +258,8 @@ def parse_arguments():
     parser = argparse.ArgumentParser(description='Process arguments.')
     parser.add_argument('--continuous', action='store_true', help='Enable Continuous Mode')
     parser.add_argument('--speak', action='store_true', help='Enable Speak Mode')
+    parser.add_argument('--debug', action='store_true', help='Enable Debug Mode')
+    parser.add_argument('--gpt3only', action='store_true', help='Enable GPT3.5 Only Mode')
     args = parser.parse_args()
 
     if args.continuous:
@@ -272,7 +274,9 @@ def parse_arguments():
         print_to_console("Speak Mode: ", Fore.GREEN, "ENABLED")
         cfg.set_speak_mode(True)
 
-
+    if args.gpt3only:
+        print_to_console("GPT3.5 Only Mode: ", Fore.GREEN, "ENABLED")
+        cfg.set_smart_llm_model(cfg.fast_llm_model)
 
 
 # TODO: fill in llm values here