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FastChat vs. FLAN-UL2

LLM Comparison


FastChat

FastChat

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

FLAN-UL2

FLAN-UL2

Overview

Similar to FLAN-T5, FLAN-UL2 is a model based on Google's popular T5 architecture with an upgraded pre-training procedure dubbed UL2. On most NLU benchmarks, FLAN-UL2 outperforms FLAN-T5 by a significant margin.



Initial release: 2023-03-03

Looking for an LLM API/SDK that works out of the box? No prompts or ad hoc guardrails.

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FastChat

FLAN-UL2

Products & Features
Instruct Models
Coding Capability
Customization
Finetuning
Open Source
License Apache 2.0 Apache 2.0
Model Sizes 3B 20B