The AI Museum
AI Analytics1,072 recordsRecounted 23 September 2026

Closed-weight models from United Kingdom

Weightsopenclosedunknownfrontier only
Year20262025202420232022202120202019201820172016
2 filters active, showing 44 of 1,072 recordsClear all

44

Models

7 organisations

0%

Open weights

0 open, 44 closed

5

Frontier

By Epoch's flag

280B

Largest traceable

Gopher (280B)

2015–2024

Span

19 with a traceable size

Releases

by year
2015201620172018201920202021202220232024

Organisation

Country

Domain

Records

44
Closed-weight models from United Kingdom, newest first. Each row links to the source Epoch AI records for it.
ModelOrganisationReleasedParametersWeights
Stable Diffusion 3Stability AI2024-028BClosed
DreamerV3DeepMind2023-01200M *Closed
CaLMUniversity of Oxford2022-1286M *Closed
DeepNashDeepMind2022-12—Closed
TranceptEveUniversity of Oxford2022-12—Closed
Mogrifier RLSTM (WT2)DeepMind2022-1135MClosed
AlphaTensorDeepMind2022-10—Closed
PhenakiUniversity College London (UCL)2022-102B *Closed
GatoDeepMind2022-051BClosed
FlamingoDeepMind2022-0480BClosed
ChinchillaDeepMind2022-0370BClosed
AlphaCodeDeepMind2022-0241BClosed
RETRO-7BDeepMind2022-028BClosed
Gopher (280B)DeepMind2021-12280BClosed
Student of GamesDeepMind2021-12—Closed
GOATDeepMind2021-073M *Closed
top-down frozen classifierUniversity of Edinburgh2021-02—Closed
Agent57DeepMind2020-03—Closed
Perceiver IO (optical flow)DeepMind2020-0228MClosed
AlphaFoldDeepMind2020-0116M *Closed
MuZeroDeepMind2019-1137M *Closed
AlphaStarDeepMind2019-10139MClosed
Mogrifier (d2, MoS2, MC) + dynamic evalDeepMind2019-0935MClosed
CPC v2DeepMind2019-05303M *Closed
Transformer-XL + RMS dynamic evalUniversity of Edinburgh2019-04257MClosed
Hanabi 4 playerDeepMind2019-02764,000Closed
FTW (For The Win)DeepMind2018-07126M *Closed
Relational Memory CoreDeepMind2018-06—Closed
aLSTM(depth-2)+RecurrentPolicy (WT2)University of Manchester2018-0532MClosed
IMPALADeepMind2018-022MClosed
AlphaZeroDeepMind2017-12—Closed
VQ-VAEDeepMind2017-11—Closed
AlphaGo MasterDeepMind2017-10—Closed
AlphaGo ZeroDeepMind2017-1046MClosed
Rainbow DQNDeepMind2017-10—Closed
LSTM + dynamic evalUniversity of Edinburgh2017-0950M *Closed
AWD-LSTMDeepMind2017-0724MClosed
NoisyNet-DuelingDeepMind2017-06—Closed
Segmental RNNUniversity of Edinburgh2016-06—Closed
Template AdaptationUniversity of Oxford2016-03138M *Closed
AlphaGo LeeDeepMind2016-01—Closed
Variational (untied weights, MC) LSTM (Large)University of Cambridge2015-1266MClosed
AlphaGo FanDeepMind2015-108M *Closed
VGG-FaceUniversity of Oxford2015-01138MClosed

An asterisk marks a parameter figure the source does not consider traceable to the people who built the model. That judgement is the source’s and it has false negatives: Kimi K3 is marked speculative at 2.8T while Moonshot’s own model card states the figure. Why that distinction carries the whole exhibit.

Counts are of models Epoch AI records as notable, not of every model released. The most recent month is always incomplete, because a model enters the dataset when it is reviewed rather than when it ships.

Epoch AI, 'Data on AI Models'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/data/ai-models-documentation' Used under CC BY 4.0.

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