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GPT-2 (124M)

Training compute
7.9×10²⁰ FLOP
Parameters
124M
Published
Feb 14, 2019

GPT-2 (124M) is an AI model developed by OpenAI (United States), first published in February 2019. It works in the language domain, on tasks such as language modeling/generation.

Training it took an estimated 7.9×10²⁰ FLOP of compute (estimation method: operation counting). The model has 124,000,000 parameters. It was trained on roughly 10.7B datapoints.

Access: Open weights (unrestricted). Its weights are openly available. The reference paper has 26,463 citations. Epoch AI rates the confidence of this record as speculative.

Full record
Organization
OpenAI
Country of organization
United States
Domain
Language
Task
Language modeling/generation
Training compute
7.9×10²⁰ FLOP
Compute estimation method
Operation counting
Parameters
124,000,000
Dataset size
10.7B
Model accessibility
Open weights (unrestricted)
Open weights
Yes
Citations
26,463
Epoch confidence
Speculative
More from OpenAI
SourceEpoch AI, 'AI Models'. Published online at epoch.ai. Retrieved 2026-07-29 from https://epoch.ai/data/ai-models. Licensed under CC BY 4.0.
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