Diplodocus

Open weights Meta AI,Massachusetts Institute of Technology (MIT) October 2022

No estimate

No hardware requirements for this model

This model's weights are open, but no parameter count has been published for it. Every memory and speed figure starts from that number, so we would rather show nothing than a fabricated estimate.

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
Meta AI,Massachusetts Institute of Technology (MIT)
Organisation type
Industry,Academia
Country
United States of America
Published
11 October 2022
Authors
Anton Bakhtin, David J Wu, Adam Lerer, Jonathan Gray, Athul Paul Jacob, Gabriele Farina, Alexander H Miller, Noam Brown

What it does

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

Domain
Games
Task
Diplomacy

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.

Training data
tokens

"we train the architecture described in Appendix F on a dataset of roughly 46000 online Diplomacy games provided by webdiplomacy.net." then self-play training

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
Open — downloadable
Model access
Open weights (non-commercial)
Training code
Open source

creative commons (non comm) for model weights, MIT for code https://github.com/facebookresearch/diplomacy_cicero?tab=readme-ov-file#license-for-model-weights

How it is classified

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

Why it is tracked
SOTA improvement

SOTA Improvement in no-press Diplomacy "In a 200-game no-press Diplomacy tournament involving 62 human participants spanning skill levels from beginner to expert, two Diplodocus agents both achieved a higher average score than all other participants who played more than two games, and ranked first and third according to an Elo ratings model. "

Record confidence
Unknown
Citations
65

Sources

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

Reference
Mastering the Game of No-Press Diplomacy via Human-Regularized Reinforcement Learning and Planning
Last updated
25 May 2026

What the numbers mean

Where it came from

Diplodocus was published by Meta AI,Massachusetts Institute of Technology (MIT), in United States of America, in October 2022. It comes out of industry,Academia.

It works in Games, and is recorded as doing diplomacy.

Published weights mean the model runs on your machine rather than someone else's, which is what makes the hardware question below answerable at all.

What went into building it

Its inclusion criterion is sOTA improvement.

Answers

Diplodocus — common questions

01

Is Diplodocus open source?

Its weights are published, so Diplodocus can be downloaded and run on your own hardware. Note that open weights is not the same as open source in the full sense — it says nothing about the training data, the training code, or the commercial terms attached.

02

How many parameters does Diplodocus have?

No parameter count has been published for Diplodocus, which is why no memory or speed figure appears on this page.

03

Who created Diplodocus?

Diplodocus was published by Meta AI,Massachusetts Institute of Technology (MIT), based in United States of America, categorised as industry,Academia.

04

When was Diplodocus released?

Diplodocus was published in October 2022. 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 Diplodocus used for?

Diplodocus works in Games, and is recorded as handling diplomacy. These are the areas it was designed around; they describe intent rather than a hard boundary.

06

Where can I download Diplodocus?

The weights for Diplodocus are published, though we do not hold a repository link for it. This site calculates hardware requirements rather than hosting model files.

07

What GPU do I need to run Diplodocus?

We cannot say. Diplodocus has open weights, but no parameter count has been published for it, and every memory and speed calculation starts from that number. We would rather show nothing than a fabricated estimate.

Source

Original publication

Record last updated 25 May 2026

The other direction

Looking at it from the other side?

This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.