# Phi

[Microsoft's Phi](https://azure.microsoft.com/en-us/products/phi) are compact, high-capability language models designed to punch above their weight class. Phi-1.5 and Phi-2 use a standard transformer decoder architecture (`PhiForCausalLM`). For Phi-3 and Phi-4 see [Phi-3 / Phi-4](phi3.md).

:::{card}
| | |
|---|---|
| **Task** | Text Generation |
| **Architecture** | `PhiForCausalLM` |
| **Parameters** | 1.3B – 2.7B |
| **HF Org** | [microsoft](https://huggingface.co/microsoft) |
:::

## Available Models

- **Phi-2**: 2.7B
- **Phi-1.5**: 1.3B

## Architecture

- `PhiForCausalLM`

## Example HF Models

| Model | HF ID |
|---|---|
| Phi-2 | [`microsoft/phi-2`](https://huggingface.co/microsoft/phi-2) |
| Phi-1.5 | [`microsoft/phi-1_5`](https://huggingface.co/microsoft/phi-1_5) |

## Example Recipes

| Recipe | Description |
|---|---|
| {download}`phi_2_squad.yaml <../../../../examples/llm_finetune/phi/phi_2_squad.yaml>` | SFT — Phi-2 on SQuAD |
| {download}`phi_2_squad_peft.yaml <../../../../examples/llm_finetune/phi/phi_2_squad_peft.yaml>` | LoRA — Phi-2 on SQuAD |


## Try with NeMo AutoModel

**1. Install** ([full instructions](../../../guides/installation.md)):

```bash
pip install nemo-automodel
```

**2. Clone the repo** to get the example recipes:

```bash
git clone https://github.com/NVIDIA-NeMo/Automodel.git
cd Automodel
```

**3. Run the recipe** from inside the repo:

```bash
automodel --nproc-per-node=8 examples/llm_finetune/phi/phi_2_squad.yaml
```

:::{dropdown} Run with Docker
**1. Pull the container** and mount a checkpoint directory:

```bash
docker run --gpus all -it --rm \
  --shm-size=8g \
  -v $(pwd)/checkpoints:/opt/Automodel/checkpoints \
  nvcr.io/nvidia/nemo-automodel:26.02.00
```

**2.** Navigate to the AutoModel directory (where the recipes are):

```bash
cd /opt/Automodel
```

**3. Run the recipe**:

```bash
automodel --nproc-per-node=8 examples/llm_finetune/phi/phi_2_squad.yaml
```
:::

See the [Installation Guide](../../../guides/installation.md) and [LLM Fine-Tuning Guide](../../../guides/llm/finetune.md).

## Fine-Tuning

See the [LLM Fine-Tuning Guide](../../../guides/llm/finetune.md).

## Hugging Face Model Cards

- [microsoft/phi-2](https://huggingface.co/microsoft/phi-2)
- [microsoft/phi-1_5](https://huggingface.co/microsoft/phi-1_5)
