diff --git a/sillm/chat.py b/sillm/chat.py
index 3ae9329..6c22e8e 100644
--- a/sillm/chat.py
+++ b/sillm/chat.py
@@ -26,7 +26,9 @@
     parser.add_argument("--system_prompt", type=str, default=None, help="System prompt for chat template")
     parser.add_argument("--ascii", default=False, action="store_true", help="Force output tokens to ASCII printable characters")
     parser.add_argument("-q2", default=False, action="store_true", help="Quantize the model to 2 bits")
+    parser.add_argument("-q3", default=False, action="store_true", help="Quantize the model to 3 bits")
     parser.add_argument("-q4", default=False, action="store_true", help="Quantize the model to 4 bits")
+    parser.add_argument("-q6", default=False, action="store_true", help="Quantize the model to 6 bits")
     parser.add_argument("-q8", default=False, action="store_true", help="Quantize the model to 8 bits")
     parser.add_argument("-v", "--verbose", default=1, action="count", help="Increase output verbosity")
     args = parser.parse_args()
@@ -70,8 +72,12 @@
     # Quantize model
     if args.q2 is True:
         model.quantize(bits=2)
+    elif args.q3 is True:
+        model.quantize(bits=3)
     elif args.q4 is True:
         model.quantize(bits=4)
+    elif args.q6 is True:
+        model.quantize(bits=6)
     elif args.q8 is True:
         model.quantize(bits=8)
 
diff --git a/sillm/convert.py b/sillm/convert.py
index ca72c68..4cac815 100644
--- a/sillm/convert.py
+++ b/sillm/convert.py
@@ -10,7 +10,10 @@
     parser.add_argument("output", type=str, help="The output model directory or file")
     parser.add_argument("-a", "--input_adapters", default=None, type=str, help="Load LoRA adapter weights from .safetensors file")
     parser.add_argument("-r", "--remap", default=False, action="store_true", help="Remap weights keys to native SiLLM format")
+    parser.add_argument("-q2", default=False, action="store_true", help="Quantize the model to 2 bits")
+    parser.add_argument("-q3", default=False, action="store_true", help="Quantize the model to 3 bits")
     parser.add_argument("-q4", default=False, action="store_true", help="Quantize the model to 4 bits")
+    parser.add_argument("-q6", default=False, action="store_true", help="Quantize the model to 6 bits")
     parser.add_argument("-q8", default=False, action="store_true", help="Quantize the model to 8 bits")
     parser.add_argument("-dtype", type=str, default=None, help="Cast model weights to specified data type")
     parser.add_argument("-m", "--max_shard_size", type=int, default=5368709120, help="Maximum shard size in bytes")
@@ -42,8 +45,14 @@
         model.merge_and_unload_lora()
 
     # Quantize model or cast model weights
-    if args.q4 is True:
+    if args.q2 is True:
+        model.quantize(bits=2)
+    elif args.q3 is True:
+        model.quantize(bits=3)
+    elif args.q4 is True:
         model.quantize(bits=4)
+    elif args.q6 is True:
+        model.quantize(bits=6)
     elif args.q8 is True:
         model.quantize(bits=8)
     elif args.dtype is not None: