Mixture-of-Depths

Closed weights Google DeepMind,McGill University,Mila - Quebec AI (originally Montreal Institute for Learning Algorithms) 3B parameters April 2024

No estimate

No hardware requirements for this model

The weights for this model have not been published, so it cannot be downloaded or run on your own hardware at any size. It is reachable only through its provider, and no graphics card changes that.

On record

Full specification

Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.

Origin

Who built this model, where, and when it was published.

Organisation
Google DeepMind,McGill University,Mila - Quebec AI (originally Montreal Institute for Learning Algorithms)
Organisation type
Industry,Academia,Academia
Country
United States of America, Canada
Published
2 April 2024
Authors
David Raposo, Sam Ritter, Blake Richards, Timothy Lillicrap, Peter Conway Humphreys, Adam Santoro

What it does

The problem areas the model was built for. A model can carry several of each.

Domain
Language
Task
Language modeling/generation

Size

How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.

Parameters
3B

Figure 4: "We used the 12.5% capacity MoD variant to perform an isoFLOP analysis for 6e18, 2e19, and 1e20 FLOPs, training models varying in size from 60M to 3B parameters"

Training data
tokens

Training compute

The arithmetic performed to train the model, measured in floating-point operations. It is a measure of what the training run cost, not of how fast the finished model answers you.

Training compute
1 × 10²⁰ FLOP

Figure 4: "We used the 12.5% capacity MoD variant to perform an isoFLOP analysis for 6e18, 2e19, and 1e20 FLOPs, training models varying in size from 60M to 3B parameters"

How it was established
Reported

Availability

Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.

Weights
Closed — provider access only
Model access
Unreleased
Training code
Unreleased

How it is classified

Labels the source dataset applies when tracking notable models, and how confident it is in the entry.

Record confidence
Confident
Citations
187

Sources

Where this record came from and when it was last checked.

Reference
Mixture-of-Depths: Dynamically allocating compute in transformer-based language models
Last updated
25 May 2026

What the numbers mean

Background

Mixture-of-Depths was published by Google DeepMind,McGill University,Mila - Quebec AI (originally Montreal Institute for Learning Algorithms), in United States of America, in April 2024. It comes out of industry,Academia,Academia.

It works in Language, and is recorded as doing language modeling/generation.

Because the weights are not available, none of the hardware figures elsewhere on this site apply to it.

How it was trained

Training it took roughly 1 × 10²⁰ FLOP of computation — a measure of what producing the model cost, not of how fast it answers.

Answers

Mixture-of-Depths — common questions

01

Is Mixture-of-Depths open source?

No. Mixture-of-Depths has not had its weights published, so it exists only as a service controlled by its owner.

02

How many parameters does Mixture-of-Depths have?

Mixture-of-Depths has 3B parameters. Figure 4: "We used the 12.5% capacity MoD variant to perform an isoFLOP analysis for 6e18, 2e19, and 1e20 FLOPs, training models varying in size from 60M to 3B parameters". That figure is the total, and it is what decides how much memory the model needs — roughly half a gigabyte per billion at the compression most people use.

03

Who created Mixture-of-Depths?

Mixture-of-Depths was published by Google DeepMind,McGill University,Mila - Quebec AI (originally Montreal Institute for Learning Algorithms), based in United States of America, categorised as industry,Academia,Academia.

04

When was Mixture-of-Depths released?

Mixture-of-Depths was published in April 2024. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.

05

What is Mixture-of-Depths used for?

Mixture-of-Depths works in Language, and is recorded as handling language modeling/generation. A model can carry several of each, so these are the areas it was built for rather than a limit on what it will attempt.

06

How much compute was used to train Mixture-of-Depths?

Around 1 × 10²⁰ FLOP. That measures what producing the model cost and says nothing about how quickly it answers once trained — inference speed comes from memory bandwidth, not from the training budget.

07

What GPU do I need to run Mixture-of-Depths?

None. Mixture-of-Depths is a closed model — its weights were never published, so it cannot be downloaded or run on your own hardware at any price. It is reachable only through its provider.

Source

Original publication

Record last updated 25 May 2026

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