# Hugging Face Transformers v5.20.1 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v5.20.1
- **Released:** Oct 16, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v5.20.1/

## Executive Summary (TL;DR)
Hugging Face Transformers v5.20.1. Source highlight: Special surprise including the new model Beam from Reflection AI :partying_face:

## Bug Fixes
- Fix small bug in auto mappings (#49664) by @yonigozlan in #49664
- Fix HunYuan-VL image assignment during batched generation (#49557)
- Fix DeepGEMM Mega MoE under expert parallelism(#49428)
- Fix from_pretrained on torch 2.7: require torch>=2.8 for distributed checkpointing (#49652)
- Make DtensorShardOperation work on torch 2.6 and 2.7 (#49657)

## Upgrade Command
```bash
python -m pip install 'transformers==5.20.1'
```