Model index
OpenAI·GPT

GPT-2

Demonstrated broad task transfer from unsupervised language modeling and introduced a staged-weight release.

LegacyLanguageOpen weights
MODEL NUMBER001
Release date
2019-02-14
Organization
OpenAI
Family
GPT
01

Specifications

Only published specifications are shown.

Total parameters
1.5B
Architecture
Dense
Context
1K
Input modalities
Text
Open weights
Yes
License
Modified MIT
Status
Legacy
02

Overview

Overview

Demonstrated broad task transfer from unsupervised language modeling and introduced a staged-weight release.

Why it mattered

GPT-2 brought the scale-driven emergence of general language behavior into public view—and made release governance part of the model story.

03

Architecture & capabilities

Key capabilities

Text generationFew-shot learning
04

Release history

Announcement

OpenAI announced GPT-2 and began a staged release.

View source
Open weights

The full 1.5B GPT-2 weights were released.

View source
05

Related models

Select a card to view the related model.

06

Sources