# Hugging Face Transformers v5.12.0 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v5.12.0
- **Released:** Jun 12, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v5.12.0/

## Executive Summary (TL;DR)
Hugging Face Transformers v5.12.0. Source highlight: <img width="886" height="583" alt="image" src="https://github.com/user-attachments/assets/ae9dd96f-6877-4531-a06b-a756686f24e5" />

## New Features
- Add minimax m3vl (#46600) by @ArthurZucker in #46600
- RNN-T Decoder: Standard neural transducer:
- LSTM prediction network maintains language context across token predictions.
- Joint network combines encoder and decoder outputs.
- Greedy transducer decoding for inference: a blank emission advances the encoder frame by one, a non-blank emission stays on the same frame.
- Add Parakeet-RNNT (#46331)

## Bug Fixes
- [CI] don't export OTELs within the tests (#46602) by @tarekziade in [#46602]
- [CI] capture checkers output in OTEL (#46601) by @tarekziade in [#46601]
- Lfm2: thread `seq_idx` through ShortConv for packed/varlen inputs (#46588) by @ChangyiYang in [#46588]
- put output_hidden_states into filter_output_hidden_states (#46422) by @molbap in [#46422]
- a11 for checkers (#46599) by @tarekziade in [#46599]
- Fix stop string matching for byte-fragment tokens (#46530) by @Incheonkirin in [#46530]

## Upgrade Command
```bash
python -m pip install 'transformers==5.12.0'
```