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Contriever

Training compute
1.6×10²⁰ FLOP
Parameters
110M
Published
Dec 16, 2021

Contriever is an AI model developed by Meta AI, University College London (UCL), PSL University and Université Grenoble Alpes (United States, United Kingdom and France), first published in December 2021. It works in the language domain, on tasks such as language modeling.

Training it took an estimated 1.6×10²⁰ FLOP of compute (estimation method: operation counting). The model has 110,000,000 parameters. It was trained on roughly 262.1B datapoints.

Access: Open weights (non-commercial). Its weights are openly available. It is built on top of BERT-Large. The reference paper has 1,477 citations. Epoch AI rates the confidence of this record as likely.

Full record
Organization
Meta AI, University College London (UCL), PSL University, Université Grenoble Alpes
Country of organization
United States, United Kingdom, France
Domain
Language
Task
Language modeling
Training compute
1.6×10²⁰ FLOP
Compute estimation method
Operation counting
Parameters
110,000,000
Dataset size
262.1B
Model accessibility
Open weights (non-commercial)
Open weights
Yes
Base model
BERT-Large
Citations
1,477
Epoch confidence
Likely
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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