gpt-j-6b-parameters-eleutherai-2021

IN premise — summaries/2026/08/24/wiki-Generative_pre-trained_transformer-chunk-2.md

Created 2026-08-24T17:11:11+00:00

GPT-J is a 6-billion-parameter open-source model produced by EleutherAI in 2021, reproducing the GPT-3 architecture.

Summary

GPT-J is an independently built 6-billion-parameter language model that EleutherAI released as open source in 2021, using the same architectural design as OpenAI's GPT-3 rather than a proprietary alternative. This matters because it gives the system a concrete reference point for what a non-OpenAI, publicly available GPT-3-style model looked like at that point in time, including its size and the organization behind it.