Impact Score: 5/10
Hugging Face Transformers: Patch release 4.55.1
Source available — automated, not human-reviewed
Component: transformers · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
Hugging Face Transformers v4.55.1. Source highlight: Patch release 4.55.1:
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
🔧 Bug Fixes & Patches (6)
- Idefics2, Idefics3, SmolVLM – Fix tensor device issue (#39975)
- Merge conflicts – Fix merge conflicts from previous changes
- MXFP4 / CPU device_map – Default to dequantize when CPU is in device_map (#39993)
- GPT Big Code – Fix attention scaling (#40041)
- Windows compatibility – Resolve Triton version check compatibility (#39986) by @Tsumugii24 @MekkCyber
- Gemma3n model – Add missing None default values for get_placeholder_mask (#39991, #40024)
📄 View Raw Release Notes (Original Developer Log)
# Patch release 4.55.1:
Mostly focused around stabalizing the Mxfp4 for GPTOSS model!
## Bug Fixes & Improvements
- Idefics2, Idefics3, SmolVLM – Fix tensor device issue (#39975) by @qgallouedec
- Merge conflicts – Fix merge conflicts from previous changes by @vasqu
- MXFP4 / CPU device_map – Default to dequantize when CPU is in device_map (#39993) by @MekkCyber
- GPT Big Code – Fix attention scaling (#40041) by @vasqu
- Windows compatibility – Resolve Triton version check compatibility (#39986) by @Tsumugii24 @MekkCyber
- Gemma3n model – Add missing None default values for get_placeholder_mask (#39991, #40024) by @Znerual
- Fuyu model – Fix broken image inference (#39915) by @Isotr0py
- PerceptionLM – Fix missing video inputs (#39971) by @shuminghu
- Idefics – Fix device mismatch (#39981) by @zucchini-nlp
- Triton kernels – Remove triton_kernels dependency in favor of included kernels (#39926) by @SunMarc
- GPT-OSS MXFP4 – Enable on older hardware (sm75+) (#39940) by @matthewdouglas @SunMarc
- MXFP4 quantizer – Allow CPU inference with dequantize option (#39953) by @returnL
## CI & Build
- CI stability – Post-GPT-OSS fixes for green CI (#39929) by @gante @LysandreJik