A side-by-side comparison of release history, capabilities, licensing and model sizes.
| Attribute |
 GPT-J
|
 OPT
|
|---|---|---|
| Developer | EleutherAI | Meta |
| Current generation | – | – |
| Initial release | 2021-06-09 | 2022-05-03 |
| Instruct tuned | Yes | No |
| Coding | No | No |
| Finetuning | Yes | Yes |
| Open source | Yes | Yes |
| License | Apache 2.0 | NA |
| Model sizes | 6B | 1.3B, 2.7B, 6.7B, 13B, 30B, 66B, 175B |
| Links |
GPT-J is a model released by EleutherAI shortly after its release of GPTNeo, with the aim of delveoping an open source model with capabilities similar to OpenAI's GPT-3 model. With a larger size than GPTNeo, GPT-J also performs better on various benchmarks.
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 It has since been superseded by models such as LLaMA, GPT-J, and Pythia.
