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$\infty$-former (SM)

Training compute
1.2×10²² FLOP
Parameters
124M
Published
Sep 1, 2021

$\infty$-former (SM) is an AI model developed by Universidade de Lisboa (ULisboa) and DeepMind (Portugal and United Kingdom), first published in September 2021. It works in the language domain, on tasks such as language modeling/generation.

Training it took an estimated 1.2×10²² FLOP of compute (estimation method: operation counting). The model has 124,000,000 parameters. It was trained on roughly 200M datapoints. Training ran on 1 NVIDIA GeForce RTX 2080 Ti 11GB.

Access: Unreleased. Its weights are not openly released. It is built on top of GPT-2 (124M). The reference paper has 31 citations. Epoch AI rates the confidence of this record as speculative.

Full record
Organization
Universidade de Lisboa (ULisboa), DeepMind
Country of organization
Portugal, United Kingdom
Domain
Language
Task
Language modeling/generation
Training compute
1.2×10²² FLOP
Compute estimation method
Operation counting
Parameters
124,000,000
Dataset size
200M
Training hardware
NVIDIA GeForce RTX 2080 Ti 11GB
Chips used
1
Training power draw
277 W
Model accessibility
Unreleased
Open weights
No
Base model
GPT-2 (124M)
Citations
31
Epoch confidence
Speculative
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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