diff --git a/LLama/LLamaQuantizer.cs b/LLama/LLamaQuantizer.cs
index 232d9f28..2114d0be 100644
--- a/LLama/LLamaQuantizer.cs
+++ b/LLama/LLamaQuantizer.cs
@@ -20,14 +20,22 @@ namespace LLama
         /// <param name="nthread">Thread to be used during the quantization. By default it's the physical core number.</param>
         /// <returns>Whether the quantization is successful.</returns>
         /// <exception cref="ArgumentException"></exception>
-        public static bool Quantize(string srcFileName, string dstFilename, LLamaFtype ftype, int nthread = -1)
+        public static unsafe bool Quantize(string srcFileName, string dstFilename, LLamaFtype ftype, int nthread = -1, bool allowRequantize = true, 
+            bool quantizeOutputTensor = false)
         {
             if (!ValidateFtype(ftype))
             {
                 throw new ArgumentException($"The type {Enum.GetName(typeof(LLamaFtype), ftype)} is not a valid type " +
                     $"to perform quantization.");
             }
-            return NativeApi.llama_model_quantize(srcFileName, dstFilename, ftype, nthread) == 0;
+
+            var quantizeParams = NativeApi.llama_model_quantize_default_params();
+            quantizeParams.ftype = ftype;
+            quantizeParams.nthread = nthread;
+            quantizeParams.allow_requantize = allowRequantize;
+            quantizeParams.quantize_output_tensor = quantizeOutputTensor;
+            LLamaModelQuantizeParams* p = &quantizeParams;
+            return NativeApi.llama_model_quantize(srcFileName, dstFilename, p) == 0;
         }
 
         /// <summary>
@@ -39,9 +47,10 @@ namespace LLama
         /// <param name="nthread">Thread to be used during the quantization. By default it's the physical core number.</param>
         /// <returns>Whether the quantization is successful.</returns>
         /// <exception cref="ArgumentException"></exception>
-        public static bool Quantize(string srcFileName, string dstFilename, string ftype, int nthread = -1)
+        public static bool Quantize(string srcFileName, string dstFilename, string ftype, int nthread = -1, bool allowRequantize = true,
+            bool quantizeOutputTensor = false)
         {
-            return Quantize(srcFileName, dstFilename, StringToFtype(ftype), nthread);
+            return Quantize(srcFileName, dstFilename, StringToFtype(ftype), nthread, allowRequantize, quantizeOutputTensor);
         }
 
         private static bool ValidateFtype(string ftype)
diff --git a/LLama/Native/LLamaContextParams.cs b/LLama/Native/LLamaContextParams.cs
index aa448ab9..3d0e2cab 100644
--- a/LLama/Native/LLamaContextParams.cs
+++ b/LLama/Native/LLamaContextParams.cs
@@ -9,19 +9,44 @@ namespace LLama.Native
     [StructLayout(LayoutKind.Sequential)]
     public struct LLamaContextParams
     {
+        /// <summary>
+        /// RNG seed, -1 for random
+        /// </summary>
+        public int seed;
         /// <summary>
         /// text context
         /// </summary>
         public int n_ctx;
         /// <summary>
+        /// prompt processing batch size
+        /// </summary>
+        public int n_batch;
+        /// <summary>
         /// number of layers to store in VRAM
         /// </summary>
         public int n_gpu_layers;
         /// <summary>
-        /// RNG seed, -1 for random
+        /// the GPU that is used for scratch and small tensors
         /// </summary>
-        public int seed;
+        public int main_gpu;
+        /// <summary>
+        /// how to split layers across multiple GPUs
+        /// </summary>
+        public TensorSplits tensor_split;
+        /// <summary>
+        /// called with a progress value between 0 and 1, pass NULL to disable
+        /// </summary>
+        public IntPtr progress_callback;
+        /// <summary>
+        /// context pointer passed to the progress callback
+        /// </summary>
+        public IntPtr progress_callback_user_data;
 
+        /// <summary>
+        /// if true, reduce VRAM usage at the cost of performance
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool low_vram;
         /// <summary>
         /// use fp16 for KV cache
         /// </summary>
@@ -52,14 +77,10 @@ namespace LLama.Native
         /// </summary>
         [MarshalAs(UnmanagedType.I1)] 
         public bool embedding;
+    }
 
-        /// <summary>
-        /// called with a progress value between 0 and 1, pass NULL to disable
-        /// </summary>
-        public IntPtr progress_callback;
-        /// <summary>
-        /// context pointer passed to the progress callback
-        /// </summary>
-        public IntPtr progress_callback_user_data;
+    public struct TensorSplits
+    {
+        public float Item1;
     }
 }
diff --git a/LLama/Native/LLamaFtype.cs b/LLama/Native/LLamaFtype.cs
index 8ecc224f..41159ee2 100644
--- a/LLama/Native/LLamaFtype.cs
+++ b/LLama/Native/LLamaFtype.cs
@@ -16,5 +16,14 @@ namespace LLama.Native
         LLAMA_FTYPE_MOSTLY_Q8_0 = 7,  // except 1d tensors
         LLAMA_FTYPE_MOSTLY_Q5_0 = 8,  // except 1d tensors
         LLAMA_FTYPE_MOSTLY_Q5_1 = 9,  // except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q2_K = 10,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q3_K_S = 11,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q3_K_M = 12,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q3_K_L = 13,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q4_K_S = 14,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q4_K_M = 15,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q5_K_S = 16,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q5_K_M = 17,// except 1d tensors
+        LLAMA_FTYPE_MOSTLY_Q6_K = 18,// except 1d tensors
     }
 }
diff --git a/LLama/Native/LLamaModelQuantizeParams.cs b/LLama/Native/LLamaModelQuantizeParams.cs
new file mode 100644
index 00000000..ebbfb1de
--- /dev/null
+++ b/LLama/Native/LLamaModelQuantizeParams.cs
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace LLama.Native
+{
+    public struct LLamaModelQuantizeParams
+    {
+        /// <summary>
+        /// number of threads to use for quantizing, if <=0 will use std::thread::hardware_concurrency()
+        /// </summary>
+        public int nthread;
+        /// <summary>
+        /// quantize to this llama_ftype
+        /// </summary>
+        public LLamaFtype ftype;
+        /// <summary>
+        /// allow quantizing non-f32/f16 tensors
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool allow_requantize;
+        /// <summary>
+        /// quantize output.weight
+        /// </summary>
+        [MarshalAs(UnmanagedType.I1)]
+        public bool quantize_output_tensor;
+    }
+}
diff --git a/LLama/Native/NativeApi.Quantize.cs b/LLama/Native/NativeApi.Quantize.cs
index 978026fc..c1eed4e4 100644
--- a/LLama/Native/NativeApi.Quantize.cs
+++ b/LLama/Native/NativeApi.Quantize.cs
@@ -17,6 +17,6 @@ namespace LLama.Native
         /// <remarks>not great API - very likely to change</remarks>
         /// <returns>Returns 0 on success</returns>
         [DllImport(libraryName, CallingConvention = CallingConvention.Cdecl)]
-        public static extern int llama_model_quantize(string fname_inp, string fname_out, LLamaFtype ftype, int nthread);
+        public unsafe static extern int llama_model_quantize(string fname_inp, string fname_out, LLamaModelQuantizeParams* param);
     }
 }
diff --git a/LLama/Native/NativeApi.cs b/LLama/Native/NativeApi.cs
index e5dd9dfb..4540a123 100644
--- a/LLama/Native/NativeApi.cs
+++ b/LLama/Native/NativeApi.cs
@@ -10,6 +10,7 @@ namespace LLama.Native
     using llama_token = Int32;
     public unsafe partial class NativeApi
     {
+        public static readonly int LLAMA_MAX_DEVICES = 1;
         static NativeApi()
         {
             try
@@ -34,6 +35,9 @@ namespace LLama.Native
         [DllImport(libraryName, CallingConvention = CallingConvention.Cdecl)]
         public static extern LLamaContextParams llama_context_default_params();
 
+        [DllImport(libraryName, CallingConvention = CallingConvention.Cdecl)]
+        public static extern LLamaModelQuantizeParams llama_model_quantize_default_params();
+
         [DllImport(libraryName, CallingConvention = CallingConvention.Cdecl)]
         public static extern bool llama_mmap_supported();