Phi-mini-MoE

Available · Language

Phi-mini-MoE is an open-weights mixture-of-experts language model from Microsoft with 7.6 billion total and 2.4 billion active parameters, compressed from Phi-3.5-MoE with the SlimMoE method and published on Hugging Face in June 2025 under the MIT licence. It handles English text with a 4k-token context; the smaller Phi-tiny-MoE was released with it. [1] [2] Primary source

Timeline of Phi-mini-MoE →

Claims and evidence

  • Released The model cards state no release date; the date is that of the SlimMoE paper, whose abstract says the models are publicly available and links both repositories. Primary source[1]Abstract (models made publicly available); v1 submission date
  • Status AvailableWeights remain downloadable from Microsoft's Hugging Face organisation (checked 2026-10-01). Primary source[2]weights and licence (MIT)
  • Derived from (distillation) Phi-3.5Compressed from Phi-3.5-MoE (an inline variant of the Phi-3.5 record) with the SlimMoE method of expert slimming and staged distillation, then post-trained with supervised fine-tuning and direct preference optimization. The model card says the starting point is the base model shared by Phi-3.5-MoE and GRIN-MoE. Primary source[1]Abstract [2]Model Summary
  • Change · Size Compressed to 7.6B total and 2.4B active parameters, from 41.9B total and 6.6B active in Phi-3.5-MoE.Compared with Phi-3.5 Primary source[1]
  • Change · Architecture Experts slimmed with the SlimMoE compression framework, with knowledge transferred through staged distillation.Compared with Phi-3.5 Primary source[1]Abstract
  • Input text Primary source[2]Training, Model: Inputs
  • Output text Primary source[2]Training, Model: Outputs
  • Open weights Yes Primary source[2]licence: MIT [1]Abstract
  • Context window 4k tokens Primary source[2]Training, Model: Context length
  • Parameters 7.6B total, 2.4B active Primary source[2]Model Summary; Training, Model: Architecture [1]Abstract
  • Access Open-weights download Primary source[2]Usage: Loading the model locally

Lineage

Predecessors

No known predecessor.

Successors

No known successor.

Based on

  • Phi-3.5 · August 2024 · derived (distillation)

Variants and derived

None recorded.

Siblings

None recorded.

All ancestors

All descendants

None.

Variants

Phi-tiny-MoE

Same dates as Phi-mini-MoE.

  • Variant Inline variant in this record.Smaller model of the same SlimMoE release; the paper presents both as compressed versions of Phi-3.5-MoE. Same 4k context. Primary source[3]Model Summary [1]Abstract

Also known as: Phi-tiny-MoE-instruct

Differs in:

  • Parameters: 3.8B total, 1.1B active Evidence not assessed [3]Model Summary [1]Abstract

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