How to use from
vLLM
Install from pip and serve model
# Install vLLM from pip:
pip install vllm
# Start the vLLM server:
vllm serve "NbAiLab/borealis-27b-instruct-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": "NbAiLab/borealis-27b-instruct-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/NbAiLab/borealis-27b-instruct-preview
Quick Links

Borealis 27B Instruct (Preview)

Release: Jan 21st, 2026.

Model summary

NbAiLab/borealis-27b-instruct-preview is a 27B-parameter instruction-tuned preview model intended for early testing and feedback. It is an experiment and should be treated as pre-release quality.

This model is based on google/gemma-3-27b-it, and fine-tuned on textual instructions only.

Training data

Supervised fine-tuning (SFT) uses NbAiLab/aurora-sft-2512 (not released yet).

⚠️ Safety / alignment disclaimer (important)

This is a preview experiment and has not been safety-aligned yet. The model may produce harmful, biased, or insensitive outputs (including content that is offensive, unsafe, or inappropriate). Do not use it for safety-critical or high-stakes applications, and add your own safety mitigations if deploying.

Intended use

  • Norwegian-centric assistant-style tasks (e.g., drafting, summarization, Q&A, light reasoning).
  • Assesstment of Norwegian writing style and quality.
  • Early evaluation of behavior, language coverage (Norwegian / Bokmål / Nynorsk), and quality.

Limitations

  • Preview quality; outputs may be unstable and may hallucinate.
  • Not aligned for safety; may follow harmful instructions or generate problematic content (see disclaimer above).

Weights & formats

Transformers (original)

  • NbAiLab/borealis-27b-instruct-preview (safetensors).

GGUF quantizations

Available in NbAiLab/borealis-27b-instruct-preview-gguf:

  • model-q8_0.gguf
  • model-f16.gguf
  • model-bf16.gguf

Use:

ollama run hf.co/NbAiLab/borealis-27b-instruct-preview-gguf:BF16

MLX (Apple Silicon)

Available in NbAiLab/borealis-27b-instruct-preview-mlx and quantized to 8 bits.

Use:

# Install MLX LM
uv tool install mlx-lm

# Interactive chat REPL
mlx_lm.chat --model "NbAiLab/borealis-27b-instruct-preview-mlx"

Acknowledgements

Thanks to the Gemma team at Google for releasing Gemma 3 and to everyone contributing feedback on this preview.

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