FastChat vs. Qwen

Overview

FastChat is the open platform for training, serving, and evaluating LLM chatbots developed and maintained by LMSYS.

FastChat is an open-source library for training, serving, and evaluating LLM chat systems from LMSYS. It includes training and evaluation code, a model serving system, a Web GUI, and a finetuning pipeline, and is the de facto system for Vicuna as well as FastChat-T5. FastChat also includes the Chatbot Arena for benchmarking LLMs.

Initial release: 2023-04-28

Reference

https://github.com/lm-sys/FastChat

Further Reading

• https://chat.lmsys.org/
• https://lmsys.org/projects/

Overview

Qwen is Alibaba Cloud's family of large language models, including chat models, code models, and multimodal variants. Qwen 3 and QwQ are the latest releases, with strong reasoning capabilities.

Qwen (formerly Tongyi Qianwen) is a comprehensive family of large language models developed by Alibaba Cloud. The series includes base models, chat models, code-specific variants (CodeQwen), and multimodal models (Qwen-VL). Qwen models excel at multilingual tasks and have become particularly popular in Asia. The latest releases include Qwen 3 and QwQ (focused on reasoning), competing effectively with Western counterparts while offering strong Chinese language support.

Initial release: 2023-09-13

Reference

https://qwenlm.github.io/

Further Reading

• https://arxiv.org/abs/2309.16609
• https://huggingface.co/Qwen