xTuring

xTuring is an open-source AI personalization library that allows users to build, customize, and control their own Large Language Models (LLMs). It provides tools for data pre-processing and fine-tuning of open-source LLMs. The platform aims to make AI models work exactly the way users want them to.

xTuring allows users to build, customize, and control their own LLMs, which aligns with the 'Fine-Tuning & Custom Models' feature. The website content explicitly mentions data pre-processing and fine-tuning of open-source LLMs.