diff --git a/ggml.c b/ggml.c
index adb387100..a84b8ceb2 100644
--- a/ggml.c
+++ b/ggml.c
@@ -584,6 +584,17 @@ static const ggml_type_traits_t type_traits[GGML_TYPE_COUNT] = {
         .vec_dot                  = ggml_vec_dot_iq2_xxs_q8_K,
         .vec_dot_type             = GGML_TYPE_Q8_K,
     },
+    [GGML_TYPE_IQ2_XS] = {
+        .type_name                = "iq2_xs",
+        .blck_size                = QK_K,
+        .type_size                = sizeof(block_iq2_xs),
+        .is_quantized             = true,
+        .to_float                 = (ggml_to_float_t) dequantize_row_iq2_xs,
+        .from_float               = quantize_row_iq2_xs,
+        .from_float_reference     = (ggml_from_float_t) quantize_row_iq2_xs_reference,
+        .vec_dot                  = ggml_vec_dot_iq2_xs_q8_K,
+        .vec_dot_type             = GGML_TYPE_Q8_K,
+    },
     [GGML_TYPE_Q8_K] = {
         .type_name                = "q8_K",
         .blck_size                = QK_K,
@@ -2123,6 +2134,7 @@ enum ggml_type ggml_ftype_to_ggml_type(enum ggml_ftype ftype) {
         case GGML_FTYPE_MOSTLY_Q5_K:          wtype = GGML_TYPE_Q5_K;  break;
         case GGML_FTYPE_MOSTLY_Q6_K:          wtype = GGML_TYPE_Q6_K;  break;
         case GGML_FTYPE_MOSTLY_IQ2_XXS:       wtype = GGML_TYPE_IQ2_XXS;  break;
+        case GGML_FTYPE_MOSTLY_IQ2_XS:        wtype = GGML_TYPE_IQ2_XS;   break;
         case GGML_FTYPE_UNKNOWN:              wtype = GGML_TYPE_COUNT; break;
         case GGML_FTYPE_MOSTLY_Q4_1_SOME_F16: wtype = GGML_TYPE_COUNT; break;
     }
@@ -7449,6 +7461,7 @@ static void ggml_compute_forward_add(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
             {
                 ggml_compute_forward_add_q_f32(params, src0, src1, dst);
             } break;
@@ -7714,6 +7727,7 @@ static void ggml_compute_forward_add1(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
             {
                 ggml_compute_forward_add1_q_f32(params, src0, src1, dst);
             } break;
@@ -7829,6 +7843,7 @@ static void ggml_compute_forward_acc(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
         default:
             {
                 GGML_ASSERT(false);
@@ -10471,6 +10486,7 @@ static void ggml_compute_forward_out_prod(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
             {
                 ggml_compute_forward_out_prod_q_f32(params, src0, src1, dst);
             } break;
@@ -10646,6 +10662,7 @@ static void ggml_compute_forward_set(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
         default:
             {
                 GGML_ASSERT(false);
@@ -10841,6 +10858,7 @@ static void ggml_compute_forward_get_rows(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
             {
                 ggml_compute_forward_get_rows_q(params, src0, src1, dst);
             } break;
@@ -11478,6 +11496,7 @@ static void ggml_compute_forward_alibi(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
         case GGML_TYPE_Q8_K:
         case GGML_TYPE_I8:
         case GGML_TYPE_I16:
@@ -11553,6 +11572,7 @@ static void ggml_compute_forward_clamp(
         case GGML_TYPE_Q5_K:
         case GGML_TYPE_Q6_K:
         case GGML_TYPE_IQ2_XXS:
+        case GGML_TYPE_IQ2_XS:
         case GGML_TYPE_Q8_K:
         case GGML_TYPE_I8:
         case GGML_TYPE_I16:
@@ -18674,6 +18694,12 @@ size_t ggml_quantize_chunk(enum ggml_type type, const float * src, void * dst, i
                 block_iq2_xxs * block = (block_iq2_xxs*)dst + start / QK_K;
                 result = ggml_quantize_iq2_xxs(src + start, block, n, n, hist);
             } break;
+        case GGML_TYPE_IQ2_XS:
+            {
+                GGML_ASSERT(start % QK_K == 0);
+                block_iq2_xs * block = (block_iq2_xs*)dst + start / QK_K;
+                result = ggml_quantize_iq2_xs(src + start, block, n, n, hist);
+            } break;
         case GGML_TYPE_F16:
             {
                 int elemsize = sizeof(ggml_fp16_t);