---
license: other
license_name: impact-license-medium-risk
license_link: https://allenai.org/licenses/impact-mr
viewer: false
task_categories:
- text-generation
language:
- en
tags:
- language-modeling
- casual-lm
- llm
pretty_name: Dolma
size_categories:
- n>1T
extra_gated_prompt: "Access to this dataset is automatically granted upon accepting the [**AI2 ImpACT License - Medium Risk Artifacts (“MR Agreement”)**](https://allenai.org/licenses/impact-mr) and completing all fields below."
extra_gated_fields:
 Your full name: text
 Organization or entity you are affiliated with: text
 State or country you are located in: text
 Contact email: text
 Please describe your intended use of the medium risk artifact(s): text
 I AGREE to the terms and conditions of the MR Agreement above: checkbox
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 I CERTIFY that the information I have provided is true and accurate: checkbox
---

# Dolma

<img alt="Dolma's official logo. It's dolma written in yellow, round lowercase letters over a blue background." src="https://raw.githubusercontent.com/allenai/dolma/main/docs/assets/AI2_Blog_1400x685_2x.webp" width="100%">

Dolma is a dataset of 3 trillion tokens from a diverse mix of web content, academic publications, code, books, and encyclopedic materials. It is openly released under AI2’s ImpACT license as a medium risk artifact.


More information:

<https://github.com/allenai/dolma/blob/main/docs/assets/dolma-datasheet-v0.1.pdf>
- Read Dolma **manuscript** and its **Data Sheet** [on ArXiv](https://github.com/allenai/dolma/blob/soldni/paper/docs/assets/dolma-v1_6-20240131.pdf);
- Review Dolma's [**ImpACT license** for medium risk artifacts](https://allenai.org/licenses/impact-mr);
- Explore the [**open source tools**](https://github.com/allenai/dolma) we created to curate Dolma.
- Want to request removal of personal data? Use [this form](https://forms.gle/q4BNUUxUxKwKkfdT6) to notify us of documents containing PII about a specific user.


To learn more about the toolkit used to create Dolma, including how to replicate this dataset, head over our [GitHub project page](https://github.com/allenai/dolma/tree/main/docs)!


## Versions

At the moment, there are five versions of Dolma available:

| **Version** | **Default?** | **Release Date** | **Size** (gzip) | **Description** |
|--|:--:|--|--|--|
| `v1_6` | ✅ | 2024-01-31 | 5.4 TB | The latest version of Dolma, with 3 trillion tokens from a diverse mix of web content, academic publications, code, books, and encyclopedic materials. |
| `v1_6-sample` | | 2024-01-31 | 16.4 GB | A smaller sample of Dolma, with roughly 10 billion tokens. Useful for data exploration. |
| `v1_5` | | 2023-10-31 | 6.4 TB | The version of Dolma used to train [OLMo-1B](https://huggingface.co/allenai/OLMo-1B). Roughly 3 trillion tokens. |
| `v1_5-sample` | | 2023-10-31 | 2.9 TB | A sample of roughly 1.9 trillion tokens used to train [OLMo-7B](https://huggingface.co/allenai/OLMo-7B) |
| `v1` | | 2023-08-18 | 6.0 TB | The first version of Dolma. |

(Size difference between `v1_6` and previous version is due to different set of metadata included in files: we removed redundant metadata in `v1_6`.)

## Summary Statistics (v1.6)


| **Source** | **Doc Type** | **UTF-8 bytes** (GB) | **Documents** (millions) | **Unicode words** (billions) | **Llama tokens** (billions) |
|--|--|--|--|--|--|
| Common Crawl | web pages | 9,022 | 3,370 | 1,775 | 2,281 |
| The Stack | code| 1,043| 210 | 260| 411 |
| C4 | web pages | 790 | 364 | 153| 198 |
| Reddit| social media| 339 | 377| 72| 89 |
| PeS2o | STEM papers| 268 | 38.8| 50| 70 |
| Project Gutenberg | books | 20.4 | 0.056 | 4.0 | 6.0 |
| Wikipedia, Wikibooks | encyclopedic | 16.2 | 6.2 | 3.7 | 4.3 |
| **Total** | | **11,519** | **4,367** | **2,318** | **3,059** |



## Download

The fastest way to download Dolma is to clone this repository and use the files in the `url` directory.
We recommend using wget in parallel mode to download the files. For example:

```bash
DATA_DIR="<path_to_your_data_directory>"
PARALLEL_DOWNLOADS="<number_of_parallel_downloads>"
DOLMA_VERSION="<version_of_dolma_to_download>"

git clone https://huggingface.co/datasets/allenai/dolma
mkdir -p "${DATA_DIR}"


cat "dolma/urls/${DOLMA_VERSION}.txt" | xargs -n 1 -P "${PARALLEL_DOWNLOADS}" wget -q -P "$DATA_DIR"
```

Then, to load this data using HuggingFace's `datasets` library, you can use the following code:

```python
import os
from datasets import load_dataset

os.environ["DATA_DIR"] = "<path_to_your_data_directory>"
dataset = load_dataset("allenai/dolma", split="train")
```

## Bibtex

If you use our dataset or tooling, please cite us at:

```bibtex
@article{dolma,
  title = {{Dolma: An Open Corpus of Three Trillion Tokens for Language Model Pretraining Research}},
  author = {
    Luca Soldaini and Rodney Kinney and Akshita Bhagia and Dustin Schwenk and David Atkinson and
    Russell Authur and Ben Bogin and Khyathi Chandu and Jennifer Dumas and Yanai Elazar and
    Valentin Hofmann and Ananya Harsh Jha and Sachin Kumar and Li Lucy and Xinxi Lyu and Ian Magnusson and
    Jacob Morrison and Niklas Muennighoff and Aakanksha Naik and Crystal Nam and Matthew E. Peters and
    Abhilasha Ravichander and Kyle Richardson and Zejiang Shen and Emma Strubell and Nishant Subramani and
    Oyvind Tafjord and Evan Pete Walsh and Hannaneh Hajishirzi and Noah A. Smith and Luke Zettlemoyer and
    Iz Beltagy and Dirk Groeneveld and Jesse Dodge and Kyle Lo
},
  year = {2024},
  journal={arXiv preprint},
}
```