PUBLIC REPOSITORIES

Code and models from NXAI

Source code, pretrained models and documentation for xLSTM and TiRex, released by NXAI GmbH, Linz, Austria. Each project links to its repository, paper and, where available, documentation and packages.

DOCUMENTATION AND RESOURCES

Documentation sites

REPOSITORIES

Projects

Time series forecasting

2 repositories

TiRex-2

NX-AI/tirex-2
161 GitHub stars 50,207 PyPI downloads, all time 23,322 Hugging Face model downloads, all time

Pretrained multivariate time series forecasting model with past and future-known covariates and quantile forecasts, released for zero-shot use.

NeurIPS 2026 · Oral Licence: Apache 2.0
pip install tirex-2

TiRex

NX-AI/tirex
308 GitHub stars 102,031 PyPI downloads, all time 3,939,838 Hugging Face model downloads, all time

Zero-shot univariate forecasting model for long and short horizons with enhanced in-context learning, based on xLSTM.

NeurIPS 2025 Licence: NXAI Community License
pip install tirex-ts

xLSTM architecture and models

4 repositories

xLSTM

NX-AI/xlstm
2,216 GitHub stars 368,071 PyPI downloads, all time 181,944 Hugging Face model downloads, all time

Official PyTorch implementation of the xLSTM architecture, including the xLSTM 7B language model.

NeurIPS 2024 Licence: Apache 2.0
pip install xlstm

xLSTM JAX

NX-AI/xlstm-jax
105 GitHub stars

Official JAX implementation of xLSTM with efficient training and inference code.

NeurIPS 2024 Licence: NXAI Community License

Vision-LSTM

NX-AI/vision-lstm
491 GitHub stars

Vision-LSTM (ViL) adapts xLSTM as a generic backbone for computer vision. Includes pretrained models and a full training pipeline.

ICLR 2025 Licence: MIT / Apache 2.0

xLSTM Scaling Laws

NX-AI/xlstm_scaling_laws
24 GitHub stars

Code and data for the scaling behaviour of xLSTM and Transformer models from 80M to 7B parameters.

ICLR 2026 Licence: Apache 2.0

Efficient training and inference

4 repositories

mLSTM Kernels

NX-AI/mlstm_kernels
96 GitHub stars 264,173 PyPI downloads, all time

Tiled Flash Linear Attention: kernel library for fast and efficient mLSTM training and inference.

NeurIPS 2025 Licence: NXAI Community License
pip install mlstm_kernels

FlashRNN

NX-AI/flashrnn
190 GitHub stars 76,239 PyPI downloads, all time

CUDA and Triton kernels for LSTM, GRU, Elman networks and sLSTM, optimised for modern GPU hardware.

ICLR 2025 Licence: Apache 2.0
pip install flashrnn

KronLSTM

NX-AI/KronLSTM
62 GitHub stars 355 Hugging Face model downloads, all time

Triton kernels and a PyTorch layer for KronLSTM, a Kronecker delta rule for long-context linear attention.

Preprint 2026 Licence: MIT

CoupledNorm

NX-AI/coupled-norm

Efficient normalisation via shared RMS statistics, reducing the number of operations on the critical path of each Transformer block.

ICML 2026 Workshop · AdaptFM Licence: Apache 2.0
USAGE

Statistics

3,653GitHub stars across 10 repositories
860,721PyPI downloads, all time131,143 in the last 30 days
4,145,459Hugging Face model downloads, all time147,694 in the last 30 days
Stars and all-time downloads per project, with downloads in the last 30 days below each total
ProjectGitHub starsPyPI downloadsHugging Face downloads
xLSTMNX-AI/xlstm 2,216 368,07128,196 last 30 days 181,9442,691 last 30 days
Vision-LSTMNX-AI/vision-lstm 491 – –
TiRexNX-AI/tirex 308 102,0318,904 last 30 days 3,939,838139,189 last 30 days
FlashRNNNX-AI/flashrnn 190 76,23930,577 last 30 days –
TiRex-2NX-AI/tirex-2 161 50,20725,051 last 30 days 23,3225,459 last 30 days
xLSTM JAXNX-AI/xlstm-jax 105 – –
mLSTM KernelsNX-AI/mlstm_kernels 96 264,17338,415 last 30 days –
KronLSTMNX-AI/KronLSTM 62 – 355355 last 30 days
xLSTM Scaling LawsNX-AI/xlstm_scaling_laws 24 – 00 last 30 days
CoupledNormNX-AI/coupled-norm 0 – –