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 It has since been superseded by models such as LLaMA, GPT-J, and Pythia.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
The most recent (as of May 2023) effort from EleutherAI, Pythia is a set of LLMs trained on The Pile. While it appears to outperform OPT and GPTNeo, its performance against GPT-J is unclear. Versions of Pythia have also been instruct-tuned by the team at Together.
Initial release: 2023-02-13
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|Products & Features|
|Model Sizes||1.3B, 2.7B, 6.7B, 13B, 30B, 66B, 175B||1B, 1.4B, 2.8B, 6.9B, 12B|