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Bibliographic Details
Main Authors: Lyngkhoi, R E Zera Marveen, Chawla, Chirag, Seth, Pratinav, Avaiya, Utsav, Bhattacharjee, Soham, Khandoga, Mykola, Yuan, Rui, Sankarapu, Vinay Kumar
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2602.09621
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Table of Contents:
  • Post-training alignment is central to deploying large language models (LLMs), yet practical workflows remain split across backend-specific tools and ad-hoc glue code, making experiments hard to reproduce. We identify backend interference, reward fragmentation, and irreproducible pipelines as key obstacles in alignment research. We introduce AlignTune, a modular toolkit exposing a unified interface for supervised fine-tuning (SFT) and RLHF-style optimization with interchangeable TRL and Unsloth backends. AlignTune standardizes configuration, provides an extensible reward layer (rule-based and learned), and integrates evaluation over standard benchmarks and custom tasks. By isolating backend-specific logic behind a single factory boundary, AlignTune enables controlled comparisons and reproducible alignment experiments.