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+# InternVL3.5(InternVL3_5-38B/241B-A28B)
+
+## Introduction
+
+[InternVL3.5](https://huggingface.co/papers/2508.18265), a new family of open-source multimodal models that significantly advances versatility, reasoning capability, and inference efficiency along the InternVL series.
+
+The `InternVL3.5` model is first supported in `vllm-ascend:v0.20.2`
+
+This document will show the main verification steps of both `InternVL3_5-38B` and `InternVL3_5-241B-A28B` model, including supported features, feature configuration, environment preparation, single-node and multi-node deployment, accuracy and performance evaluation.
+
+## Supported Features
+
+Refer to [supported features](../../user_guide/support_matrix/supported_models.md) to get the model's supported feature matrix.
+
+Refer to [feature guide](../../user_guide/feature_guide/index.md) to get the feature's configuration.
+
+## Environment Preparation
+
+### Model Weight
+
+require 1 Atlas 800I A2 (64G × 8) node or 1 Atlas 800 A3 (64G × 16) node:
+
+- `InternVL3_5-38B`:   [Download model weight](https://huggingface.co/OpenGVLab/InternVL3_5-38B)
+- `InternVL3_5-241B-A28B`:   [Download model weight](https://huggingface.co/OpenGVLab/InternVL3_5-241B-A28B)
+
+It is recommended to download the model weight to the shared directory of multiple nodes, such as `/root/.cache/`
+
+### Installation
+
+:::::{tab-set}
+:sync-group: install
+
+::::{tab-item} single-NPU
+:sync: single
+
+Run docker container:
+
+```{code-block} bash
+   :substitutions:
+# Update the vllm-ascend image
+export IMAGE=quay.io/ascend/vllm-ascend:|vllm_ascend_version|
+
+docker run --rm \
+--name vllm-ascend \
+--shm-size=1g \
+--device /dev/davinci0 \
+--device /dev/davinci_manager \
+--device /dev/devmm_svm \
+--device /dev/hisi_hdc \
+-v /usr/local/dcmi:/usr/local/dcmi \
+-v /usr/local/bin/npu-smi:/usr/local/bin/npu-smi \
+-v /usr/local/Ascend/driver/lib64/:/usr/local/Ascend/driver/lib64/ \
+-v /usr/local/Ascend/driver/version.info:/usr/local/Ascend/driver/version.info \
+-v /etc/ascend_install.info:/etc/ascend_install.info \
+-v /root/.cache:/root/.cache \
+-p 8000:8000 \
+-it $IMAGE bash
+```
+
+::::
+::::{tab-item} multi-NPU
+:sync: multi
+
+Run docker container:
+
+```{code-block} bash
+   :substitutions:
+# Update the vllm-ascend image
+export IMAGE=quay.io/ascend/vllm-ascend:|vllm_ascend_version|
+
+docker run --rm \
+--name $NAME \
+--net=host \
+--privileged=true \
+--shm-size=500g \
+--device /dev/davinci0 \
+--device /dev/davinci1 \
+--device /dev/davinci2 \
+--device /dev/davinci3 \
+--device /dev/davinci4 \
+--device /dev/davinci5 \
+--device /dev/davinci6 \
+--device /dev/davinci7 \
+--device /dev/davinci_manager \
+--device /dev/devmm_svm \
+--device /dev/hisi_hdc \
+-v /usr/local/dcmi:/usr/local/dcmi \
+-v /usr/local/Ascend/driver/tools/hccn_tool:/usr/local/Ascend/driver/tools/hccn_tool \
+-v /usr/local/bin/npu-smi:/usr/local/bin/npu-smi \
+-v /usr/local/Ascend/driver/lib64/:/usr/local/Ascend/driver/lib64/ \
+-v /usr/local/Ascend/driver/version.info:/usr/local/Ascend/driver/version.info \
+-v /etc/ascend_install.info:/etc/ascend_install.info \
+-it $IMAGE bash
+```
+
+::::
+::::{tab-item} Build from source
+:sync: multi
+
+You can build all from source.
+
+- Install `vllm-ascend`, refer to [set up using python](../../installation.md#set-up-using-python).
+
+::::
+:::::
+
+If you want to deploy multi-node environment, you need to set up environment on each node.
+
+## Deployment
+
+### Online Serving
+
+:::::{tab-set}
+:sync-group: install
+
+::::{tab-item} InternVL3_5-38B
+:sync: multi-node inference
+
+Run docker container to start the vLLM server on multi-node NPU:
+
+```{code-block} bash
+   :substitutions:
+vllm serve OpenGVLab/InternVL3_5-38B \
+--tensor-parallel-size 2 \
+--dtype bfloat16 \
+--max_model_len 16384 \
+--max-num-batched-tokens 16384
+```
+
+If your service start successfully, you can see the info shown below:
+
+```bash
+INFO:     Started server process [2736]
+INFO:     Waiting for application startup.
+INFO:     Application startup complete.
+```
+
+Once your server is started, you can query the model with input prompts:
+
+```bash
+curl http://localhost:8000/v1/chat/completions \
+    -H "Content-Type: application/json" \
+    -d '{
+    "model": "OpenGVLab/InternVL3_5-38B",
+    "messages": [
+    {"role": "system", "content": "You are a helpful assistant."},
+    {"role": "user", "content": [
+        {"type": "image_url", "image_url": {"url": "https://huggingface.co/OpenGVLab/InternVL3_5-241B-A28B/blob/main/images/DvD.jpg"}},
+        {"type": "text", "text": "What is the text in the illustration?"}
+    ]}
+    ]
+    }'
+```
+
+If you query the server successfully, you can see the info shown below (client):
+
+```bash
+{"id":"chatcmpl-d3270d4a16cb4b98936f71ee3016451f","object":"chat.completion","created":1764924127,"model":"OpenGVLab/InternVL3_5-38B","choices":[{"index":0,"message":{"role":"assistant","content":"The text in the illustration is: **DVD**","refusal":null,"annotations":null,"audio":null,"function_call":null,"tool_calls":[],"reasoning_content":null},"logprobs":null,"finish_reason":"stop","stop_reason":null,"token_ids":null}],"service_tier":null,"system_fingerprint":null,"usage":{"prompt_tokens":107,"total_tokens":123,"completion_tokens":16,"prompt_tokens_details":null},"prompt_logprobs":null,"prompt_token_ids":null,"kv_transfer_params":null}
+```
+
+Logs of the vllm server:
+
+```bash
+INFO 12-05 08:42:07 [chat_utils.py:560] Detected the chat template content format to be 'openai'. You can set `--chat-template-content-format` to override this.
+Downloading Model from https://www.modelscope.cn to directory: /root/.cache/modelscope/hub/models/OpenGVLab/InternVL3_5-38B
+INFO 12-05 08:42:11 [acl_graph.py:187] Replaying aclgraph
+INFO:     127.0.0.1:60988 - "POST /v1/chat/completions HTTP/1.1" 200 OK
+INFO 12-05 08:42:13 [loggers.py:127] Engine 000: Avg prompt throughput: 10.7 tokens/s, Avg generation throughput: 1.6 tokens/s, Running: 0 reqs, Waiting: 0 reqs, GPU KV cache usage: 0.0%, Prefix cache hit rate: 0.0%
+INFO 12-05 08:42:23 [loggers.py:127] Engine 000: Avg prompt throughput: 0.0 tokens/s, Avg generation throughput: 0.0 tokens/s, Running: 0 reqs, Waiting: 0 reqs, GPU KV cache usage: 0.0%, Prefix cache hit rate: 0.0%
+```
+
+::::
+::::{tab-item} InternVL3_5-241B-A28B
+:sync: multi
+
+Run docker container to start the vLLM server on multi-NPU:
+
+```shell
+# Enable the AIVector core to directly schedule ROCE communication
+export HCCL_OP_EXPANSION_MODE="AIV"
+# Set vLLM to Engine V1
+export VLLM_USE_V1=1
+
+vllm serve OpenGVLab/InternVL3_5-241B-A28B \
+    --host 0.0.0.0 \
+    --port 8000 \
+    --tensor-parallel-size 16 \
+    --max-model-len 30000 \
+    --max-num-batched-tokens 50000 \
+    --max-num-seqs 30 \
+    --no-enable-prefix-caching \
+    --trust-remote-code \
+    --dtype bfloat16
+
+```
+
+If your service start successfully, you can see the info shown below:
+
+```bash
+INFO:     Started server process [14431]
+INFO:     Waiting for application startup.
+INFO:     Application startup complete.
+```
+
+Once your server is started, you can query the model with input prompts:
+
+```bash
+curl http://localhost:8000/v1/chat/completions \
+    -H "Content-Type: application/json" \
+    -d '{
+    "model": "OpenGVLab/InternVL3_5-241B-A28B",
+    "messages": [
+    {"role": "system", "content": "You are a helpful assistant."},
+    {"role": "user", "content": [
+        {"type": "image_url", "image_url": {"url": "https://huggingface.co/OpenGVLab/InternVL3_5-241B-A28B/blob/main/images/DvD.jpg"}},
+        {"type": "text", "text": "What is the text in the illustration?"}
+    ]}
+    ]
+    }'
+```
+
+If you query the server successfully, you can see the info shown below (client):
+
+```bash
+{"id":"chatcmpl-c07088bf992a4b77a89d79480122a483","object":"chat.completion","created":1764905884,"model":"OpenGVLab/InternVL3_5-241B-A28B","choices":[{"index":0,"message":{"role":"assistant","content":"The text in the illustration is:\n\n**OpenGVLab/InternVL3_5-241B-A28B**","refusal":null,"annotations":null,"audio":null,"function_call":null,"tool_calls":[],"reasoning":null,"reasoning_content":null},"logprobs":null,"finish_reason":"stop","stop_reason":null,"token_ids":null}],"service_tier":null,"system_fingerprint":null,"usage":{"prompt_tokens":73,"total_tokens":89,"completion_tokens":16,"prompt_tokens_details":null},"prompt_logprobs":null,"prompt_token_ids":null,"kv_transfer_params":null}
+```
+
+Logs of the vllm server:
+
+```bash
+INFO 12-05 08:50:57 [chat_utils.py:560] Detected the chat template content format to be 'openai'. You can set `--chat-template-content-format` to override this.
+Downloading Model from https://www.modelscope.cn to directory: /root/.cache/modelscope/hub/models/OpenGVLab/InternVL3_5-241B-A28B
+2025-12-05 08:50:58,913 - modelscope - INFO - Target directory already exists, skipping creation.
+INFO 12-05 08:51:00 [acl_graph.py:187] Replaying aclgraph
+INFO:     127.0.0.1:50720 - "POST /v1/chat/completions HTTP/1.1" 200 OK
+INFO 12-05 08:51:10 [loggers.py:127] Engine 000: Avg prompt throughput: 7.3 tokens/s, Avg generation throughput: 1.6 tokens/s, Running: 0 reqs, Waiting: 0 reqs, GPU KV cache usage: 0.0%, Prefix cache hit rate: 0.0%
+INFO 12-05 08:51:20 [loggers.py:127] Engine 000: Avg prompt throughput: 0.0 tokens/s, Avg generation throughput: 0.0 tokens/s, Running: 0 reqs, Waiting: 0 reqs, GPU KV cache usage: 0.0%, Prefix cache hit rate: 0.0%
+```
+
+::::
+:::::
+
+## Accuracy Evaluation
+
+### Using Language Model Evaluation Harness
+
+The accuracy of some models is already within our CI monitoring scope, including:
+
+As an example, take the `mmmu_val` dataset as a test dataset, and run accuracy evaluation of `InternVL3_5-241B-A28B` in offline mode.
+
+1. Refer to [Using lm_eval](../../developer_guide/evaluation/using_lm_eval.md) for more details on `lm_eval` installation.
+
+    ```shell
+    pip install lm_eval
+    ```
+
+2. Run `lm_eval` to execute the accuracy evaluation.
+
+    ```shell
+    lm_eval \
+        --model vllm-vlm \
+        --model_args pretrained=OpenGVLab/InternVL3_5-38B,max_model_len=8192,gpu_memory_utilization=0.7 \
+        --tasks mmmu_val \
+        --batch_size 32 \
+        --apply_chat_template \
+        --trust_remote_code \
+        --output_path ./results
+    ```
+
+## Performance
+
+### Using vLLM Benchmark
+
+Refer to [vllm benchmark](https://docs.vllm.ai/en/latest/benchmarking/) for more details.
+
+There are three `vllm bench` subcommands:
+
+- `latency`: Benchmark the latency of a single batch of requests.
+- `serve`: Benchmark the online serving throughput.
+- `throughput`: Benchmark offline inference throughput.
+
+The performance evaluation must be conducted in an online mode. Take the `serve` as an example. Run the code as follows.
+
+```shell
+vllm bench serve --model OpenGVLab/InternVL3_5-38B  --dataset-name random --random-input 200 --num-prompts 200 --request-rate 1 --save-result --result-dir ./
+```
+
+After about several minutes, you can get the performance evaluation result.
diff --git a/docs/source/tutorials/models/index.md b/docs/source/tutorials/models/index.md
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@@ -40,4 +40,5 @@ gpt-oss-120b.md
 Mixtral-8x7B-Instruct-v0.1.md
 Qwen3-ASR-1.7B.md
 Qwen2.5-Math-RM-72B.md
+InternVL3.5
 :::