As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/m/phi-4/

# Phi-4 (14B)

Microsoft, Phi-4 family. Status: legacy. Type: language model. Released: 2024-12-12. Training cutoff: not published.

## How to call it

| Provider | Model id | Endpoint | Docs |
|---|---|---|---|
| Hugging Face |  |  | https://huggingface.co/microsoft/phi-4 |
| Azure AI Foundry | `Phi-4` |  | https://azure.microsoft.com/en-us/products/phi |
| OpenRouter | `microsoft/phi-4` |  | https://openrouter.ai/microsoft/phi-4 |

## Pricing

- Input: $0.07 per 1M tokens
- Output: $0.14 per 1M tokens
- Unit as published: per 1M tokens (USD) on OpenRouter; self-hosting free
- Source: https://openrouter.ai/microsoft/phi-4
- Last checked: 2026-09-29

## Specs

- Input: text
- Output: text
- Context window: 16,384 tokens
- Max output: not published
- Open weights: yes
- Licence: mit

## What it has not seen

- No published training cutoff. Counted from its release (2024-12-12): at least 2,045 AI events since (480 major, 93 historic), as of 2026-11-13.
- Everything since October 2024: https://postcutoff.com/since/2024-10/

## What stands out

- Synthetic-data small model: 14B dense model trained on 9.8T tokens heavy in curated synthetic data, prioritizing reasoning over scale (84.8 MMLU, 80.4 MATH). Source: https://huggingface.co/microsoft/phi-4
- Reasoning derivatives (found after launch): Base for Phi-4-reasoning, Phi-4-reasoning-plus, Phi-4-mini(-reasoning/-flash-reasoning) and Phi-4-multimodal-instruct open models. Source: https://huggingface.co/microsoft

## Notes

No Phi-5 found on Hugging Face as of 2026-09-29 (microsoft org). Foundry model name not re-verified today. Siblings: microsoft/Phi-4-mini-instruct, microsoft/Phi-4-reasoning-plus, microsoft/Phi-4-multimodal-instruct.

Small open model for local/edge reasoning, math and English text tasks.

```python
from transformers import pipeline
pipe = pipeline("text-generation", model="microsoft/phi-4", device_map="auto")
print(pipe([{"role":"user","content":"Solve 2x+3=11"}], max_new_tokens=128))
```

Sources: https://huggingface.co/microsoft/phi-4 , https://azure.microsoft.com/en-us/products/phi

Model page: https://postcutoff.com/m/phi-4/