Instructions to use microsoft/Fara1.5-4B with libraries, inference providers, notebooks, and local apps. Follow these links to get started.

Libraries

How to use microsoft/Fara1.5-4B with Transformers:

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

pipe = pipeline("image-text-to-text", model="microsoft/Fara1.5-4B")
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 AutoProcessor, AutoModelForMultimodalLM

processor = AutoProcessor.from_pretrained("microsoft/Fara1.5-4B")
model = AutoModelForMultimodalLM.from_pretrained("microsoft/Fara1.5-4B", device_map="auto")
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?"}
        ]
    },
]
inputs = processor.apply_chat_template(
	messages,
	add_generation_prompt=True,
	tokenize=True,
	return_dict=True,
	return_tensors="pt",
).to(model.device)

outputs = model.generate(**inputs, max_new_tokens=40)
print(processor.decode(outputs[0][inputs["input_ids"].shape[-1]:]))

Notebooks
Google Colab
Kaggle
Local Apps Settings

vLLM

How to use microsoft/Fara1.5-4B with vLLM:

Install from pip and serve model

# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "microsoft/Fara1.5-4B"
# Call the server using curl (OpenAI-compatible API):
curl -X POST "http://localhost:8000/v1/chat/completions" \
	-H "Content-Type: application/json" \
	--data '{
		"model": "microsoft/Fara1.5-4B",
		"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/microsoft/Fara1.5-4B

SGLang

How to use microsoft/Fara1.5-4B 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 "microsoft/Fara1.5-4B" \
    --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": "microsoft/Fara1.5-4B",
		"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 "microsoft/Fara1.5-4B" \
        --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": "microsoft/Fara1.5-4B",
		"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 microsoft/Fara1.5-4B with Docker Model Runner:
```
docker model run hf.co/microsoft/Fara1.5-4B
```

Update README.md

by hsseinmz - opened 3 days ago

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@@ -32,6 +32,8 @@ The model is vision-only at perception time: it sees the browser through screens
 Fara1.5-4B is supervised fine-tuned from Qwen3.5-4B on data generated by **FaraGen1.5**, our multi-agent pipeline that synthesizes web tasks, executes trajectories to solve them, and verifies the results before training.
 It's co-designed with **MagenticLite**, and that's the recommended deployment for both research and production.
 ## Highlights
@@ -133,6 +135,8 @@ The screen resolution Fara is most commonly trained with is **1440×900**. Match
 ### Minimal agent loop
 ```python
 # Pseudocode for a single-step interaction. Use vLLM's OpenAI-compatible
 # endpoint and pass the screenshot as an image content part.

 Fara1.5-4B is supervised fine-tuned from Qwen3.5-4B on data generated by **FaraGen1.5**, our multi-agent pipeline that synthesizes web tasks, executes trajectories to solve them, and verifies the results before training.
+Please use only with the harness developped in [Github/fara CLI](https://github.com/microsoft/fara) or [Magentic-Lite](https://github.com/microsoft/magentic-ui).
 It's co-designed with **MagenticLite**, and that's the recommended deployment for both research and production.
 ## Highlights
 ### Minimal agent loop
+Note: We strongly recommend to use only with the harness developped in [Github/fara](https://github.com/microsoft/fara) or [Magentic-Lite](https://github.com/microsoft/magentic-ui).
 ```python
 # Pseudocode for a single-step interaction. Use vLLM's OpenAI-compatible
 # endpoint and pass the screenshot as an image content part.