Phi model releases

Phi-4 reasoning-specialized model family for math, science, and chain-of-thought style tasks.

A 14B dense model that rivals far larger ones on math and reasoning, under a permissive MIT license.

Phi-3.5 mixture-of-experts model, scaling Microsoft's small-model line while preserving efficient active parameters.

3.8B-parameter Phi-3 model released as a phone-capable small model with 4K and 128K variants.

2.7B-parameter Phi model showing strong reasoning and language understanding at small scale.

Microsoft's first Phi small-language-model release, demonstrating strong code performance from textbook-quality synthetic data.