Decoder-Only Language Models · 2019

Language Models are Unsupervised Multitask Learners (GPT-2)

Alec Radford, Jeffrey Wu, Rewon Child, David Luan, Dario Amodei, Ilya Sutskever

Demonstrated that scaling a decoder-only language model and its training corpus lets it perform many NLP tasks with no gradient updates, purely by conditioning on a prompt.

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Plain-language summary

GPT-2 trains a 1.5B-parameter Transformer on WebText, a large corpus scraped from outbound Reddit links, using the same next-token objective as GPT-1. The paper shows the model handles reading comprehension, translation, summarization, and question answering in a zero-shot setting when the task is phrased as text, without any task-specific training. This reframed NLP tasks as special cases of language modeling and gave early evidence that capability scales with model and data size.

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Record ID
P-011
Record created
2026-07-13
Last reviewed
2026-07-14
Record version
2

Citation caveat: Citation metadata is approximate and marked unverified in the source dataset.