Sapling Logo

FastChat vs. OPT

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

OPT

OPT

Overview

Open Pre-trained Transformer Language Models (OPT) is part of the family of open source models designed to replicate GPT-3, with similar decoder-only architecture. It has since been superseded by models such as LLaMA, GPT-J, and Pythia.



Initial release: 2022-05-03

Further Reading

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

Sapling API
More Comparisons

FastChat

OPT
Products & Features
Instruct Models
Coding Capability
Customization
Finetuning
Open Source
License Apache 2.0 NA
Model Sizes 3B 1.3B, 2.7B, 6.7B, 13B, 30B, 66B, 175B

Other FastChat Comparisons

FastChat vs. Alpaca FastChat vs. Cerebras-GPT FastChat vs. Dolly FastChat vs. Falcon FastChat vs. FLAN-T5 FastChat vs. FLAN-UL2 FastChat vs. Gemma FastChat vs. Gemma 2 FastChat vs. GPT-J FastChat vs. GPT4All FastChat vs. GPTNeo FastChat vs. Grok FastChat vs. Guanaco FastChat vs. Koala FastChat vs. LLaMA FastChat vs. Llama 2 FastChat vs. Llama 3 FastChat vs. Mistral FastChat vs. MPT FastChat vs. OpenAssistant FastChat vs. OpenLLaMA FastChat vs. OPT FastChat vs. Orca FastChat vs. Phi FastChat vs. Pythia FastChat vs. RedPajama-INCITE FastChat vs. StableLM FastChat vs. StableVicuna FastChat vs. Vicuna FastChat vs. WizardLM

Other OPT Comparisons

OPT vs. Alpaca OPT vs. Cerebras-GPT OPT vs. Dolly OPT vs. Falcon OPT vs. FastChat OPT vs. FLAN-T5 OPT vs. FLAN-UL2 OPT vs. Gemma OPT vs. Gemma 2 OPT vs. GPT-J OPT vs. GPT4All OPT vs. GPTNeo OPT vs. Grok OPT vs. Guanaco OPT vs. Koala OPT vs. LLaMA OPT vs. Llama 2 OPT vs. Llama 3 OPT vs. Mistral OPT vs. MPT OPT vs. OpenAssistant OPT vs. OpenLLaMA OPT vs. Orca OPT vs. Phi OPT vs. Pythia OPT vs. RedPajama-INCITE OPT vs. StableLM OPT vs. StableVicuna OPT vs. Vicuna OPT vs. WizardLM

Undecided?

Get Advice