Stack RNN

Closed weights Facebook AI Research 2M parameters March 2015

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
Facebook AI Research
Organisation type
Industry
Country
United States of America, France
Published
3 March 2015
Authors
Armand Joulin, Tomas Mikolov

What it does

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

Domain
Language
Task
Language modeling

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
2M
Training data
tokens

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

repo but no PTB experiment code: https://github.com/facebookarchive/Stack-RNN

How it is classified

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

Citations
440
Benchmark data
Stack RNN

Sources

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

Reference
Inferring Algorithmic Patterns with Stack-Augmented Recurrent Nets
Last updated
28 November 2025

What the numbers mean

About this model

Stack RNN was published by Facebook AI Research, in United States of America, in March 2015. industry is the category the publisher falls under.

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

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

Answers

Stack RNN — common questions

01

Who created Stack RNN?

Stack RNN was published by Facebook AI Research, based in United States of America, categorised as industry.

02

When was Stack RNN released?

Stack RNN was published in March 2015. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.

03

What is Stack RNN used for?

Stack RNN works in Language, and is recorded as handling language modeling. Models frequently carry more than one of each, and the tags describe purpose rather than capability limits.

04

What GPU do I need to run Stack RNN?

None. Stack RNN 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.

05

Is Stack RNN open source?

No. Stack RNN has not had its weights published, so it exists only as a service controlled by its owner.

06

How many parameters does Stack RNN have?

Stack RNN has 2M 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.

Source

Original publication

Record last updated 28 November 2025

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.