OpenBMB · HF

MiniCPM-V-4.6-Thinking

MiniCPM-V-4.6-Thinking

二〇二六年六月六日 · 英文原文

OpenBMB 发布 MiniCPM-V 4.6 Thinking,为 MiniCPM-V 4.6 的 long chain-of-thought 多模态推理版本,采用 SigLIP2-400M vision encoder、Qwen3.5-0.8B LLM 和 4x/16x visual token 压缩,支持图像、视频理解,可在 iOS、Android、HarmonyOS 端侧部署,并适配 Transformers、vLLM、SGLang、llama.cpp、Ollama 等框架。

手机上的口袋大小 MLLM,用于超高效图像和视频理解

GitHub | CookBook | Demo | 飞书(Lark)

MiniCPM-V 4.6 Thinking

MiniCPM-V 4.6 ThinkingMiniCPM-V 4.6 的长 chain-of-thought 推理变体。它会在给出最终答案前生成显式推理轨迹,显著提升复杂多模态推理、数学和 OCR 密集型任务的表现,同时保持相同的 edge-friendly 架构(SigLIP2-400M vision encoder + Qwen3.5-0.8B LLM)以及 MiniCPM-V 4.6 的 4x/16x 混合 visual token 压缩。

评测

整体表现(Thinking)

高并发吞吐

单请求 TTFT (ms)

示例

整体

MiniCPM-V 4.6 可部署在三大主流端侧平台——iOS、Android 和 HarmonyOS。下方片段为手机设备上的原始屏幕录制,未经过编辑。

用法

使用 Transformers 推理

安装
pip install "transformers[torch]>=5.7.0" torchvision torchcodec

关于 CUDA 兼容性的说明: torchcodec(用于视频解码)可能与某些 CUDA 版本存在兼容性问题。例如,torch>=2.11 默认捆绑 CUDA 13.1,而使用 CUDA 12.x 的环境可能会遇到 RuntimeError: Could not load libtorchcodec 等错误。两种解决方法:

  1. PyAV 替换 torchcodec —— 支持图像和视频推理,不受 CUDA 版本限制:
    pip install "transformers[torch]>=5.7.0" torchvision av
    
  2. 安装 torch 时固定 CUDA 版本,使其与环境匹配(例如 CUDA 12.8):
    pip install "transformers>=5.7.0" torchvision torchcodec --index-url https://download.pytorch.org/whl/cu128
    
加载模型
from transformers import AutoModelForImageTextToText, AutoProcessor

model_id = "openbmb/MiniCPM-V-4.6-Thinking"

processor = AutoProcessor.from_pretrained(model_id)
model = AutoModelForImageTextToText.from_pretrained(
    model_id, torch_dtype="auto", device_map="auto"
)

# Flash Attention 2 is recommended for better acceleration and memory saving,
# especially in multi-image and video scenarios.
# model = AutoModelForImageTextToText.from_pretrained(
#     model_id,
#     torch_dtype=torch.bfloat16,
#     attn_implementation="flash_attention_2",
#     device_map="auto",
# )
图像推理
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/refract.png"},
            {"type": "text", "text": "What causes this phenomenon?"},
        ],
    }
]

downsample_mode = "16x"  # Using `downsample_mode="4x"` for Finer Detail

inputs = processor.apply_chat_template(
    messages, tokenize=True, add_generation_prompt=True,
    return_dict=True, return_tensors="pt",
    downsample_mode=downsample_mode,
    max_slice_nums=36,
).to(model.device)

generated_ids = model.generate(**inputs, downsample_mode=downsample_mode, max_new_tokens=512)
generated_ids_trimmed = [
    out_ids[len(in_ids):] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
]
output_text = processor.batch_decode(
    generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
print(output_text[0])
视频推理
messages = [
    {
        "role": "user",
        "content": [
            {"type": "video", "url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/football.mp4"},
            {"type": "text", "text": "Describe this video in detail. Follow the timeline and focus on on-screen text, interface changes, main actions, and scene changes."},
        ],
    }
]

downsample_mode = "16x"  # Using `downsample_mode="4x"` for Finer Detail

inputs = processor.apply_chat_template(
    messages, tokenize=True, add_generation_prompt=True,
    return_dict=True, return_tensors="pt",
    downsample_mode=downsample_mode,
    max_num_frames=128,
    stack_frames=1,
    max_slice_nums=1,
    use_image_id=False,
).to(model.device)

generated_ids = model.generate(**inputs, downsample_mode=downsample_mode, max_new_tokens=2048)
generated_ids_trimmed = [
    out_ids[len(in_ids):] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
]
output_text = processor.batch_decode(
    generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
print(output_text[0])
高级参数

你可以向 apply_chat_template 传入额外参数来自定义图像/视频处理:

参数 默认值 适用范围 说明
downsample_mode "16x" 图像与视频 Visual token 下采样。"16x" 会合并 token 以提高效率;"4x" 保留 4× 更多 token,以获得更精细的细节。也必须传给 generate()
max_slice_nums 9 图像与视频 拆分高分辨率图像时的最大 slice 数量。更高的值可为大图保留更多细节。推荐:图像使用 36,视频使用 1
max_num_frames 128 仅视频 从视频中采样的主帧最大数量。
stack_frames 1 仅视频 每秒总采样点数。1 = 仅主帧(不堆叠)。N(N>1)= 每秒 1 个主帧 + N−1 个子帧;子帧会合成为网格图像,并与主帧交错排列。推荐:35
use_image_id True 图像与视频 是否在每个图像/帧占位符前添加 <image_id>N</image_id> 标签。推荐:图像使用 True,视频使用 False

注意: downsample_mode 必须同时传给 apply_chat_template(用于正确的占位符数量)和 generate(用于 vision encoder)。其他所有参数只需传给 apply_chat_template

使用 transformers serve 提供服务

Hugging Face Transformers 包含一个轻量级、兼容 OpenAI 的服务器,适用于快速测试和中等负载部署。

pip install "transformers[serving]>=5.7.0"

启动服务器:

transformers serve openbmb/MiniCPM-V-4.6-Thinking --port 8000 --host 0.0.0.0 --continuous-batching

发送请求:

curl -s http://localhost:8000/v1/chat/completions \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "openbmb/MiniCPM-V-4.6-Thinking",
    "messages": [{
      "role": "user",
      "content": [
        {"type": "image_url", "image_url": {"url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/refract.png"}},
        {"type": "text", "text": "What causes this phenomenon?"}
      ]
    }]
  }'

处理模型输出中的转义换行符

在某些情况下,模型可能会输出作为字符串字面量的转义换行符 \n,而不是实际换行。为正确渲染文本,尤其是在 UI 层中,可以使用以下工具函数。该函数会谨慎地将字面量 \n 替换为真实换行,同时保护 \n 具有特定语义的场景。

工具函数:

import re

_PATTERN = re.compile(
    r'(```[\s\S]*?```'       # fenced code blocks
    r'|`[^`]+`'              # inline code
    r'|\$\$[\s\S]*?\$\$'     # display math
    r'|\$[^$]+\$'            # inline math
    r'|\\\([\s\S]*?\\\)'     # \(...\)
    r'|\\\[[\s\S]*?\\\]'     # \[...\]
    r')'
    r'|(?<!\\)(?:\\r\\n|\\[nr])'
)

def normalize_response_text(text: str) -> str:
    """
    Lightweight post-processing: Converts literal '\\n' to actual newlines, 
    while protecting code blocks, inline code, and LaTeX commands.
    """
    if not isinstance(text, str) or "\\" not in text:
        return text
    return _PATTERN.sub(lambda m: m.group(1) or '\n', text)

在 iOS、Android 和 HarmonyOS 平台部署 MiniCPM-V 4.6

我们已适配 MiniCPM-V 4.6,使其可部署在 iOS、Android 和 HarmonyOS 平台,并且所有端侧适配代码均已完全开源。开发者只需几步即可复现端侧体验。请访问我们的端侧部署仓库查看各平台构建指南,或前往下载页面直接试用预构建应用。

在其他推理与训练框架中使用 MiniCPM-V 4.6

MiniCPM-V 4.6 支持多种推理和训练框架。下面是各框架的快速启动命令。完整细节请参见我们的 Cookbook

vllm serve openbmb/MiniCPM-V-4.6-Thinking \
  --port 8000 \
  --enable-auto-tool-choice \
  --tool-call-parser qwen3_coder \
  --default-chat-template-kwargs '{"enable_thinking": true}'

注意: --enable-auto-tool-choice--tool-call-parser qwen3_coder 用于启用 tool/function calling 支持。如果不需要使用工具,可以省略这些 flag,直接运行 vllm serve openbmb/MiniCPM-V-4.6-Thinking

curl -s http://localhost:8000/v1/chat/completions -H 'Content-Type: application/json' -d '{
  "model": "openbmb/MiniCPM-V-4.6-Thinking",
  "messages": [{"role": "user", "content": [
    {"type": "image_url", "image_url": {"url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/refract.png"}},
    {"type": "text", "text": "What causes this phenomenon?"}
  ]}]
}'

Tool calling 示例:

curl -s http://localhost:8000/v1/chat/completions -H 'Content-Type: application/json' -d '{
  "model": "openbmb/MiniCPM-V-4.6-Thinking",
  "messages": [{"role": "user", "content": [
    {"type": "text", "text": "北京的天气"}
  ]}],
  "tools": [{
    "type": "function",
    "function": {
      "name": "get_weather",
      "description": "Get the current weather for a given location",
      "parameters": {
        "type": "object",
        "properties": {
          "location": {"type": "string", "description": "City name"}
        },
        "required": ["location"]
      }
    }
  }]
}'
python -m sglang.launch_server --model openbmb/MiniCPM-V-4.6-Thinking --port 30000
curl -s http://localhost:30000/v1/chat/completions -H 'Content-Type: application/json' -d '{
  "model": "openbmb/MiniCPM-V-4.6-Thinking",
  "messages": [{"role": "user", "content": [
    {"type": "image_url", "image_url": {"url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/refract.png"}},
    {"type": "text", "text": "What causes this phenomenon?"}
  ]}]
}'
llama-server -m MiniCPM-V-4.6-Q4_K_M.gguf --port 8080
curl -s http://localhost:8080/v1/chat/completions -H 'Content-Type: application/json' -d '{
  "model": "MiniCPM-V-4.6",
  "messages": [{"role": "user", "content": [
    {"type": "image_url", "image_url": {"url": "https://huggingface.co/datasets/openbmb/DemoCase/resolve/main/refract.png"}},
    {"type": "text", "text": "What causes this phenomenon?"}
  ]}]
}'
ollama run minicpm-v-4.6-thinking

在交互式会话中,直接粘贴图像路径或 URL 即可与模型对话。

llamafactory-cli train examples/train_lora/minicpmv4_6_lora_sft.yaml
swift sft --model_type minicpm-v-4_6 --dataset <your-dataset>

许可证

模型许可证

声明

技术报告与关键技术论文

👏 欢迎了解 MiniCPM-o/V 以及我们团队其他多模态项目的关键技术:

技术报告: MiniCPM-o 4.5 | MiniCPM-V 4.5 | MiniCPM-o 2.6 | MiniCPM-Llama3-V 2.5 | MiniCPM-V 2.0

其他多模态项目: VisCPM | RLPR | RLHF-V | LLaVA-UHD | RLAIF-V

引用

如果你觉得我们的模型/代码/论文有帮助,请考虑引用我们的论文 📝,并给我们 star ⭐️!

@misc{cui2026minicpmo45realtimefullduplex,
      title={MiniCPM-o 4.5: Towards Real-Time Full-Duplex Omni-Modal Interaction}, 
      author={Junbo Cui and Bokai Xu and Chongyi Wang and Tianyu Yu and Weiyue Sun and Yingjing Xu and Tianran Wang and Zhihui He and Wenshuo Ma and Tianchi Cai and others},
      year={2026},
      url={https://arxiv.org/abs/2604.27393}, 
}

@proceedings{yu2025minicpmv45cookingefficient,
      title={MiniCPM-V 4.5: Cooking Efficient MLLMs via Architecture, Data, and Training Recipe}, 
      author={Tianyu Yu and Zefan Wang and Chongyi Wang and Fuwei Huang and Wenshuo Ma and Zhihui He and Tianchi Cai and Weize Chen and Yuxiang Huang and Yuanqian Zhao and others},
      year={2025},
      url={https://arxiv.org/abs/2509.18154}, 
}

@article{yao2024minicpm,
  title={MiniCPM-V: A GPT-4V Level MLLM on Your Phone},
  author={Yao, Yuan and Yu, Tianyu and Zhang, Ao and Wang, Chongyi and Cui, Junbo and Zhu, Hongji and Cai, Tianchi and Li, Haoyu and Zhao, Weilin and He, Zhihui and others},
  journal={arXiv preprint arXiv:2408.01800},
  year={2024}
}
译自 OpenBMB · HF · 录于 二〇二六年六月六日