Instructions to use OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview with Transformers:

# Use a pipeline as a high-level helper
from transformers import pipeline

pipe = pipeline("image-text-to-text", model="OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview", trust_remote_code=True)
messages = [
    {
        "role": "user",
        "content": [
            {"type": "image", "url": "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/p-blog/candy.JPG"},
            {"type": "text", "text": "What animal is on the candy?"}
        ]
    },
]
pipe(text=messages)

# Load model directly
from transformers import AutoModel
model = AutoModel.from_pretrained("OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview", trust_remote_code=True, dtype="auto")

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Use Docker

docker model run hf.co/OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview

SGLang

How to use OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview with SGLang:

Install from pip and serve model

# Install SGLang from pip:
pip install sglang
# Start the SGLang server:
python3 -m sglang.launch_server \
    --model-path "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview" \
    --host 0.0.0.0 \
    --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Use Docker images

docker run --gpus all \
    --shm-size 32g \
    -p 30000:30000 \
    -v ~/.cache/huggingface:/root/.cache/huggingface \
    --env "HF_TOKEN=<secret>" \
    --ipc=host \
    lmsysorg/sglang:latest \
    python3 -m sglang.launch_server \
        --model-path "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview" \
        --host 0.0.0.0 \
        --port 30000
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:30000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview",
		"messages": [
			{
				"role": "user",
				"content": [
					{
						"type": "text",
						"text": "Describe this image in one sentence."
					},
					{
						"type": "image_url",
						"image_url": {
							"url": "https://cdn.britannica.com/61/93061-050-99147DCE/Statue-of-Liberty-Island-New-York-Bay.jpg"
						}
					}
				]
			}
		]
	}'

Docker Model Runner
How to use OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview with Docker Model Runner:
```
docker model run hf.co/OpenGVLab/InternVL3_5-GPT-OSS-20B-A4B-Preview
```

InternVL3_5-GPT-OSS-20B-A4B-Preview / config.json

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	{
	"architectures": [
	"InternVLChatModel"
	],
	"auto_map": {
	"AutoConfig": "configuration_internvl_chat.InternVLChatConfig",
	"AutoModel": "modeling_internvl_chat.InternVLChatModel",
	"AutoModelForCausalLM": "modeling_internvl_chat.InternVLChatModel"
	},
	"downsample_ratio": 0.5,
	"dynamic_image_size": true,
	"force_image_size": 448,
	"llm_config": {
	"_name_or_path": "/mnt/shared-storage-user/intern7shared/internvl_a4s/checkpoints/gpt-oss-20b",
	"architectures": [
	"GptOssForCausalLM"
	],
	"attention_bias": true,
	"attention_dropout": 0.0,
	"eos_token_id": 200002,
	"experts_per_token": 4,
	"head_dim": 64,
	"hidden_act": "silu",
	"hidden_size": 2880,
	"initial_context_length": 4096,
	"initializer_range": 0.02,
	"intermediate_size": 2880,
	"layer_types": [
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention",
	"sliding_attention",
	"full_attention"
	],
	"max_position_embeddings": 131072,
	"model_type": "gpt_oss",
	"num_attention_heads": 64,
	"num_experts_per_tok": 4,
	"num_hidden_layers": 24,
	"num_key_value_heads": 8,
	"num_local_experts": 32,
	"output_router_logits": false,
	"pad_token_id": 199999,
	"rms_norm_eps": 1e-05,
	"rope_scaling": {
	"beta_fast": 32.0,
	"beta_slow": 1.0,
	"factor": 32.0,
	"original_max_position_embeddings": 4096,
	"rope_type": "yarn",
	"truncate": false
	},
	"rope_theta": 150000,
	"router_aux_loss_coef": 0.9,
	"sliding_window": 128,
	"swiglu_limit": 7.0,
	"use_cache": false,
	"vocab_size": 200028
	},
	"max_dynamic_patch": 12,
	"min_dynamic_patch": 1,
	"model_type": "internvl_chat",
	"output_attentions": false,
	"output_router_logits": false,
	"pad2square": false,
	"ps_version": "v2",
	"router_aux_loss_coef": 0.9,
	"select_layer": -1,
	"template": "internvl3_5_gpt_oss",
	"tie_word_embeddings": false,
	"torch_dtype": "bfloat16",
	"transformers_version": null,
	"use_backbone_lora": 0,
	"use_llm_lora": 0,
	"use_thumbnail": true,
	"vision_config": {
	"architectures": [
	"InternVisionModel"
	],
	"attention_dropout": 0.0,
	"auto_map": {
	"AutoConfig": "configuration_intern_vit.InternVisionConfig",
	"AutoModel": "modeling_intern_vit.InternVisionModel"
	},
	"drop_path_rate": 0.1,
	"dropout": 0.0,
	"hidden_act": "gelu",
	"hidden_size": 1024,
	"image_size": 448,
	"initializer_factor": 1.0,
	"initializer_range": 0.02,
	"intermediate_size": 4096,
	"layer_norm_eps": 1e-06,
	"model_type": "intern_vit_6b",
	"norm_type": "layer_norm",
	"num_attention_heads": 16,
	"num_channels": 3,
	"num_hidden_layers": 24,
	"patch_size": 14,
	"qk_normalization": false,
	"qkv_bias": true,
	"torch_dtype": "bfloat16",
	"use_flash_attn": true
	}
	}