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AI models

LongT5

Parameters
3B
Published
Dec 15, 2021

LongT5 is an AI model developed by Google Research (United States), first published in December 2021. It works in the language domain, on tasks such as text summarization.

Epoch AI has no training-compute estimate for this model. The model has 3,000,000,000 parameters. It was trained on roughly 524.3B datapoints. Training ran on 128 Google TPU v3.

Access: Open weights (unrestricted). Its weights are openly available. The reference paper has 400 citations. Epoch AI rates the confidence of this record as confident.

Full record
Organization
Google Research
Country of organization
United States
Domain
Language
Task
Text summarization
Parameters
3,000,000,000
Dataset size
524.3B
Training hardware
Google TPU v3
Chips used
128
Training power draw
116.0 kW
Model accessibility
Open weights (unrestricted)
Open weights
Yes
Citations
400
Epoch confidence
Confident
More from Google Research
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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