diff --git a/docs/multimodal/minicpmo2.6.md b/docs/multimodal/minicpmo2.6.md
index 8c6db8efe..d4edc9718 100644
--- a/docs/multimodal/minicpmo2.6.md
+++ b/docs/multimodal/minicpmo2.6.md
@@ -29,8 +29,8 @@ cmake --build build --config Release
 Convert PyTorch model to gguf files (You can also download the converted [gguf](https://huggingface.co/openbmb/MiniCPM-o-2_6-gguf) by us)
 
 ```bash
-python ./tools/mtmd/minicpmv-surgery.py -m ../MiniCPM-o-2_6
-python ./tools/mtmd/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-o-2_6 --minicpmv-projector ../MiniCPM-o-2_6/minicpmv.projector --output-dir ../MiniCPM-o-2_6/ --image-mean 0.5 0.5 0.5 --image-std 0.5 0.5 0.5 --minicpmv_version 4
+python ./tools/mtmd/legacy-models/minicpmv-surgery.py -m ../MiniCPM-o-2_6
+python ./tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-o-2_6 --minicpmv-projector ../MiniCPM-o-2_6/minicpmv.projector --output-dir ../MiniCPM-o-2_6/ --minicpmv_version 4
 python ./convert_hf_to_gguf.py ../MiniCPM-o-2_6/model
 
 # quantize int4 version
diff --git a/docs/multimodal/minicpmo4.0.md b/docs/multimodal/minicpmo4.0.md
new file mode 100644
index 000000000..49125ea05
--- /dev/null
+++ b/docs/multimodal/minicpmo4.0.md
@@ -0,0 +1,47 @@
+## MiniCPM-o 4
+
+### Prepare models and code
+
+Download [MiniCPM-o-4](https://huggingface.co/openbmb/MiniCPM-o-4) PyTorch model from huggingface to "MiniCPM-o-4" folder.
+
+
+### Build llama.cpp
+Readme modification time: 20250206
+
+If there are differences in usage, please refer to the official build [documentation](https://github.com/ggerganov/llama.cpp/blob/master/docs/build.md)
+
+Clone llama.cpp:
+```bash
+git clone https://github.com/ggerganov/llama.cpp
+cd llama.cpp
+```
+
+Build llama.cpp using `CMake`:
+```bash
+cmake -B build
+cmake --build build --config Release
+```
+
+
+### Usage of MiniCPM-o 4
+
+Convert PyTorch model to gguf files (You can also download the converted [gguf](https://huggingface.co/openbmb/MiniCPM-o-4-gguf) by us)
+
+```bash
+python ./tools/mtmd/legacy-models/minicpmv-surgery.py -m ../MiniCPM-o-4
+python ./tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-o-4 --minicpmv-projector ../MiniCPM-o-4/minicpmv.projector --output-dir ../MiniCPM-o-4/ --minicpmv_version 6
+python ./convert_hf_to_gguf.py ../MiniCPM-o-4/model
+
+# quantize int4 version
+./build/bin/llama-quantize ../MiniCPM-o-4/model/ggml-model-f16.gguf ../MiniCPM-o-4/model/ggml-model-Q4_K_M.gguf Q4_K_M
+```
+
+
+Inference on Linux or Mac
+```bash
+# run in single-turn mode
+./build/bin/llama-mtmd-cli -m ../MiniCPM-o-4/model/ggml-model-f16.gguf --mmproj ../MiniCPM-o-4/mmproj-model-f16.gguf -c 4096 --temp 0.7 --top-p 0.8 --top-k 100 --repeat-penalty 1.05 --image xx.jpg -p "What is in the image?"
+
+# run in conversation mode
+./build/bin/llama-mtmd-cli -m ../MiniCPM-o-4/model/ggml-model-Q4_K_M.gguf --mmproj ../MiniCPM-o-4/mmproj-model-f16.gguf
+```
diff --git a/docs/multimodal/minicpmv2.5.md b/docs/multimodal/minicpmv2.5.md
index 19b439607..5eb87bc96 100644
--- a/docs/multimodal/minicpmv2.5.md
+++ b/docs/multimodal/minicpmv2.5.md
@@ -28,8 +28,8 @@ cmake --build build --config Release
 Convert PyTorch model to gguf files (You can also download the converted [gguf](https://huggingface.co/openbmb/MiniCPM-Llama3-V-2_5-gguf) by us)
 
 ```bash
-python ./tools/mtmd/minicpmv-surgery.py -m ../MiniCPM-Llama3-V-2_5
-python ./tools/mtmd/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-Llama3-V-2_5 --minicpmv-projector ../MiniCPM-Llama3-V-2_5/minicpmv.projector --output-dir ../MiniCPM-Llama3-V-2_5/ --image-mean 0.5 0.5 0.5 --image-std 0.5 0.5 0.5 --minicpmv_version 2
+python ./tools/mtmd/legacy-models/minicpmv-surgery.py -m ../MiniCPM-Llama3-V-2_5
+python ./tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-Llama3-V-2_5 --minicpmv-projector ../MiniCPM-Llama3-V-2_5/minicpmv.projector --output-dir ../MiniCPM-Llama3-V-2_5/ --minicpmv_version 2
 python ./convert_hf_to_gguf.py ../MiniCPM-Llama3-V-2_5/model
 
 # quantize int4 version
diff --git a/docs/multimodal/minicpmv2.6.md b/docs/multimodal/minicpmv2.6.md
index 15c1bbd12..1b0ff5969 100644
--- a/docs/multimodal/minicpmv2.6.md
+++ b/docs/multimodal/minicpmv2.6.md
@@ -28,8 +28,8 @@ cmake --build build --config Release
 Convert PyTorch model to gguf files (You can also download the converted [gguf](https://huggingface.co/openbmb/MiniCPM-V-2_6-gguf) by us)
 
 ```bash
-python ./tools/mtmd/minicpmv-surgery.py -m ../MiniCPM-V-2_6
-python ./tools/mtmd/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-V-2_6 --minicpmv-projector ../MiniCPM-V-2_6/minicpmv.projector --output-dir ../MiniCPM-V-2_6/ --image-mean 0.5 0.5 0.5 --image-std 0.5 0.5 0.5 --minicpmv_version 3
+python ./tools/mtmd/legacy-models/minicpmv-surgery.py -m ../MiniCPM-V-2_6
+python ./tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-V-2_6 --minicpmv-projector ../MiniCPM-V-2_6/minicpmv.projector --output-dir ../MiniCPM-V-2_6/ --minicpmv_version 3
 python ./convert_hf_to_gguf.py ../MiniCPM-V-2_6/model
 
 # quantize int4 version
diff --git a/docs/multimodal/minicpmv4.0.md b/docs/multimodal/minicpmv4.0.md
new file mode 100644
index 000000000..65887d960
--- /dev/null
+++ b/docs/multimodal/minicpmv4.0.md
@@ -0,0 +1,47 @@
+## MiniCPM-V 4
+
+### Prepare models and code
+
+Download [MiniCPM-V-4](https://huggingface.co/openbmb/MiniCPM-V-4) PyTorch model from huggingface to "MiniCPM-V-4" folder.
+
+
+### Build llama.cpp
+Readme modification time: 20250206
+
+If there are differences in usage, please refer to the official build [documentation](https://github.com/ggerganov/llama.cpp/blob/master/docs/build.md)
+
+Clone llama.cpp:
+```bash
+git clone https://github.com/ggerganov/llama.cpp
+cd llama.cpp
+```
+
+Build llama.cpp using `CMake`:
+```bash
+cmake -B build
+cmake --build build --config Release
+```
+
+
+### Usage of MiniCPM-V 4
+
+Convert PyTorch model to gguf files (You can also download the converted [gguf](https://huggingface.co/openbmb/MiniCPM-V-4-gguf) by us)
+
+```bash
+python ./tools/mtmd/legacy-models/minicpmv-surgery.py -m ../MiniCPM-V-4
+python ./tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py -m ../MiniCPM-V-4 --minicpmv-projector ../MiniCPM-V-4/minicpmv.projector --output-dir ../MiniCPM-V-4/ --minicpmv_version 5
+python ./convert_hf_to_gguf.py ../MiniCPM-V-4/model
+
+# quantize int4 version
+./build/bin/llama-quantize ../MiniCPM-V-4/model/ggml-model-f16.gguf ../MiniCPM-V-4/model/ggml-model-Q4_K_M.gguf Q4_K_M
+```
+
+
+Inference on Linux or Mac
+```bash
+# run in single-turn mode
+./build/bin/llama-mtmd-cli -m ../MiniCPM-V-4/model/ggml-model-f16.gguf --mmproj ../MiniCPM-V-4/mmproj-model-f16.gguf -c 4096 --temp 0.7 --top-p 0.8 --top-k 100 --repeat-penalty 1.05 --image xx.jpg -p "What is in the image?"
+
+# run in conversation mode
+./build/bin/llama-mtmd-cli -m ../MiniCPM-V-4/model/ggml-model-Q4_K_M.gguf --mmproj ../MiniCPM-V-4/mmproj-model-f16.gguf
+```
diff --git a/tools/mtmd/clip.cpp b/tools/mtmd/clip.cpp
index a4b62f9af..20c217331 100644
--- a/tools/mtmd/clip.cpp
+++ b/tools/mtmd/clip.cpp
@@ -868,10 +868,16 @@ struct clip_graph {
             int n_head = n_embd/d_head;
             int num_query = 96;
             if (ctx->model.hparams.minicpmv_version == 2) {
+                // MiniCPM-V 2.5
                 num_query = 96;
             } else if (ctx->model.hparams.minicpmv_version == 3) {
+                // MiniCPM-V 2.6
                 num_query = 64;
             } else if (ctx->model.hparams.minicpmv_version == 4) {
+                // MiniCPM-o 2.6
+                num_query = 64;
+            } else if (ctx->model.hparams.minicpmv_version == 5) {
+                // MiniCPM-V 4.0
                 num_query = 64;
             }
 
@@ -3551,10 +3557,16 @@ int clip_n_output_tokens(const struct clip_ctx * ctx, struct clip_image_f32 * im
         case PROJECTOR_TYPE_MINICPMV:
             {
                 if (params.minicpmv_version == 2) {
+                    // MiniCPM-V 2.5
                     n_patches_sq = 96;
                 } else if (params.minicpmv_version == 3) {
+                    // MiniCPM-V 2.6
                     n_patches_sq = 64;
                 } else if (params.minicpmv_version == 4) {
+                    // MiniCPM-o 2.6
+                    n_patches_sq = 64;
+                } else if (params.minicpmv_version == 5) {
+                    // MiniCPM-V 4.0
                     n_patches_sq = 64;
                 } else {
                     GGML_ABORT("Unknown minicpmv version");
@@ -4103,11 +4115,17 @@ int clip_n_mmproj_embd(const struct clip_ctx * ctx) {
             return ctx->model.mm_3_b->ne[0];
         case PROJECTOR_TYPE_MINICPMV:
             if (hparams.minicpmv_version == 2) {
+                // MiniCPM-V 2.5
                 return 4096;
             } else if (hparams.minicpmv_version == 3) {
+                // MiniCPM-V 2.6
                 return 3584;
             } else if (hparams.minicpmv_version == 4) {
+                // MiniCPM-o 2.6
                 return 3584;
+            } else if (hparams.minicpmv_version == 5) {
+                // MiniCPM-V 4.0
+                return 2560;
             }
             GGML_ABORT("Unknown minicpmv version");
         case PROJECTOR_TYPE_GLM_EDGE:
diff --git a/tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py b/tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py
index cfe0961f9..3c6020954 100644
--- a/tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py
+++ b/tools/mtmd/legacy-models/minicpmv-convert-image-encoder-to-gguf.py
@@ -497,11 +497,11 @@ ap.add_argument("--projector-type", help="Type of projector. Possible values: ml
 ap.add_argument("-o", "--output-dir", help="Directory to save GGUF files. Default is the original model directory", default=None)
 # Example --image_mean 0.48145466 0.4578275 0.40821073 --image_std 0.26862954 0.26130258 0.27577711
 # Example --image_mean 0.5 0.5 0.5 --image_std 0.5 0.5 0.5
-default_image_mean = [0.48145466, 0.4578275, 0.40821073]
-default_image_std = [0.26862954, 0.26130258, 0.27577711]
+default_image_mean = [0.5, 0.5, 0.5]
+default_image_std = [0.5, 0.5, 0.5]
 ap.add_argument('--image-mean', type=float, nargs='+', help='Mean of the images for normalization (overrides processor) ', default=None)
 ap.add_argument('--image-std', type=float, nargs='+', help='Standard deviation of the images for normalization (overrides processor)', default=None)
-ap.add_argument('--minicpmv_version', type=int, help='minicpmv_version: MiniCPM-V-2 use 1; MiniCPM-V-2.5 use 2; MiniCPM-V-2.6 use 3; MiniCPM-o-2.6 use 4', default=2)
+ap.add_argument('--minicpmv_version', type=int, help='minicpmv_version: MiniCPM-V-2 use 1; MiniCPM-V-2.5 use 2; MiniCPM-V-2.6 use 3; MiniCPM-o-2.6 use 4; MiniCPM-V 4.0 use 5; MiniCPM-o-4.0 use 6', default=2)
 
 # with proper
 args = ap.parse_args()
@@ -517,6 +517,17 @@ if args.use_f32:
 # output in the same directory as the model if output_dir is None
 dir_model = args.model_dir
 
+# If minicpmv_projector is not specified but the default path exists, use the default path
+if args.minicpmv_projector is None:
+    default_projector_path = os.path.join(dir_model, "minicpmv.projector")
+    if os.path.isfile(default_projector_path):
+        args.minicpmv_projector = default_projector_path
+        print(f"Found default projector file: {default_projector_path}")
+
+# If output_dir is not specified, use model_dir as the default value
+if args.output_dir is None:
+    args.output_dir = dir_model
+
 if args.clip_model_is_vision or not os.path.exists(dir_model + "/vocab.json") or args.clip_model_is_openclip:
     vocab = None
     tokens = None
@@ -546,18 +557,21 @@ if args.use_f32:
 minicpmv_version = args.minicpmv_version
 emb_dim = 4096
 block_count = 26
-if minicpmv_version == 1:
+if minicpmv_version == 1:  # MiniCPM-V 2.0
     emb_dim = 2304
     block_count = 26
-elif minicpmv_version == 2:
+elif minicpmv_version == 2:  # MiniCPM-V 2.5
     emb_dim = 4096
     block_count = 27
-elif minicpmv_version == 3:
+elif minicpmv_version == 3:  # MiniCPM-V 2.6
     emb_dim = 3584
     block_count = 27
-elif minicpmv_version == 4:
+elif minicpmv_version == 4:  # MiniCPM-o 2.6
     emb_dim = 3584
     block_count = 27
+elif minicpmv_version == 5:  # MiniCPM-V 4.0
+    emb_dim = 2560
+    block_count = 27
 
 default_vision_config = {
         "hidden_size": 1152,
@@ -577,6 +591,10 @@ if minicpmv_version == 3:
 elif minicpmv_version == 4:
     vision_config = SiglipVisionConfig(**default_vision_config)
     model = SiglipVisionTransformer(vision_config)
+elif minicpmv_version == 5:
+    default_vision_config["model_type"] = "siglip_vision_model"
+    vision_config = SiglipVisionConfig(**default_vision_config)
+    model = SiglipVisionTransformer(vision_config)
 
 processor = None
 # if model.attn_pool is not None:
@@ -603,7 +621,7 @@ elif args.vision_only:
 else:
     fname_middle = ""
 
-output_dir = args.output_dir if args.output_dir is not None else dir_model
+output_dir = args.output_dir
 os.makedirs(output_dir, exist_ok=True)
 output_prefix = os.path.basename(output_dir).replace("ggml_", "")
 fname_out = os.path.join(output_dir, f"{fname_middle}model-{ftype_str[ftype]}.gguf")
diff --git a/tools/mtmd/mtmd.cpp b/tools/mtmd/mtmd.cpp
index 45b2f1f25..a05373d5b 100644
--- a/tools/mtmd/mtmd.cpp
+++ b/tools/mtmd/mtmd.cpp
@@ -207,7 +207,7 @@ struct mtmd_context {
             tok_row_end_trail = false; // no trailing end-of-row token
             ov_img_first      = true;
 
-        } else if (minicpmv_version == 3 || minicpmv_version == 4) {
+        } else if (minicpmv_version == 3 || minicpmv_version == 4 || minicpmv_version == 5) {
             // minicpmv 2.6 format:
             // <image> (overview) </image><slice> (slice) </slice><slice> (slice) </slice>\n ...
             slice_tmpl        = MTMD_SLICE_TMPL_MINICPMV_2_6;