LLM Releases

Lab release history

Last updated Jun 2, 2026

Microsoft model releases

Ships the small, efficient Phi family of open models. This page collects the lab's model releases, lifecycle events, source links, and model metadata in one crawlable record.

9
Models
1
Labs
7
Open
4
Recent

9 models

MAI-Thinking-1

Available
MicrosoftFrontierProprietary

Microsoft's first in-house frontier reasoning model, unveiled at Build 2026. A sparse MoE (~35B active, 256K context) trained entirely on commercially licensed data without third-party distillation. Microsoft reports 97.0% on AIME 2025 and coding parity with Claude Opus 4.6 on SWE-bench Pro.

MoEUndisc.256K ctxJun 2, 2026

MAI-Code-1-Flash

Available
MicrosoftProprietary

An inference-efficient agentic coding model from Microsoft (~5B active parameters), trained from the ground up on clean, traceable, enterprise-grade data without third-party distillation. Rolling out in GitHub Copilot; Microsoft reports a +16-point SWE-bench Pro lead over Claude Haiku 4.5.

Undisc. ctxJun 2, 2026

Phi-4 Reasoning

Available
MicrosoftOpen weights

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

Dense14B ctxApr 30, 2025

Phi-4

Available
MicrosoftOpen source

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

Dense14B16K ctxDec 12, 2024

Phi-3.5 MoE

Available
MicrosoftOpen weights

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

MoE42B128K ctxAug 20, 2024

Phi-3 Mini

Available
MicrosoftOpen weights

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

Dense3.8B128K ctxApr 23, 2024

WizardLM-2 8x22B

Available
MicrosoftOpen weights

Microsoft's WizardLM-2 MoE chat model, widely mirrored and run locally after its model-card release.

MoE141B66K ctxApr 15, 2024

Phi-2

Available
MicrosoftOpen weights

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

Dense2.7B ctxDec 12, 2023

Phi-1

Available
MicrosoftOpen weights

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

Dense1.3B ctxJun 21, 2023