datasets
Training and evaluation data, with the modality, task and licence stated up front. Listed live from the Hugging Face Hub.
AutoMathText-V2
🚀 AutoMathText-V2: A 2.46 Trillion Token AI-Curated STEM Pretraining Dataset
🎉 AutoMathText-v2 has surpassed 1.5 million downloads! We'd love to know how you're using it. Please take 1 minute to fill out our use case survey. Your feedback will directly shape the future roadmap of this dataset.👉 Share your use case here
📊 AutoMathText-V2 consists of 2.46 trillion tokens of high-quality, deduplicated text spanning web content, mathematics, code, reasoning, and… See the full description on the dataset page: https://huggingface.co/datasets/OpenSQZ/AutoMathText-V2.UltraData-Code
UltraData-Code
📦 UltraData Collection |
🌐 UltraData |
🤗 MiniCPM5 Series |
📖 Tech Report (Coming Soon) |
🤗 UltraData-Code-L2 Classifier
English | 中文
📚 Introduction
UltraData-Code is a complete implementation of the UltraData L0-L4 tiered data management framework. It covers four code data states from L0 through L3, with each level corresponding to a distinct construction stage. The pipeline starts from approximately 192 million public GitHub… See the full description on the dataset page: https://huggingface.co/datasets/openbmb/UltraData-Code.flores_plus
Dataset Card for FLORES+
FLORES+ is an evaluation benchmark dataset for multilingual machine translation.
Dataset Details
Dataset Description
FLORES+ is a multilingual machine translation benchmark released under CC BY-SA 4.0. This dataset was originally released by FAIR researchers at Meta under the name FLORES. Further information about these initial releases can be found in Dataset Sources below. The data is now being managed by OLDI, the Open… See the full description on the dataset page: https://huggingface.co/datasets/openlanguagedata/flores_plus.SlimPajama-Meta-rater
Annotated SlimPajama Dataset
Dataset Description
This dataset contains the first fully annotated SlimPajama dataset with comprehensive quality metrics for data-centric large language model research. The dataset includes approximately 580 billion tokens from the training set of the original SlimPajama dataset, annotated across 25 different quality dimensions.
Note: This dataset contains only the training set portion of the original SlimPajama dataset, which is why the… See the full description on the dataset page: https://huggingface.co/datasets/opendatalab/SlimPajama-Meta-rater.chinese-fineweb-edu-v2
This version is deprecated. We recommend you to use the newest version Fineweb-edu-chinese-v2.1 !
Chinese Fineweb Edu Dataset V2 [中文] [English]
[OpenCSG Community] [👾github] [wechat] [Twitter]
📖Technical Report
Chinese Fineweb Edu Dataset V2 is a comprehensive upgrade of the original Chinese Fineweb Edu, designed and optimized for natural language processing (NLP) tasks in the education sector. This high-quality Chinese pretraining dataset has… See the full description on the dataset page: https://huggingface.co/datasets/opencsg/chinese-fineweb-edu-v2.code-alchemy
CodeAlchemy
CodeAlchemy is a synthetic code dataset (~976.6B tokens, ~162M rows) designed for training and evaluating code language models. It consists of 5 training subsets covering a range of code-related tasks, and 2 evaluation subsets. All files are Parquet with zstd compression with on-disk size ~873 GB. Raw source files are not included due to ownership considerations and must be manually fetched as instructed below.
Dataset Statistics
Config… See the full description on the dataset page: https://huggingface.co/datasets/open-alchemy/code-alchemy.open_government
Open Government Dataset
Open Government is the largest agregation of governement text and data made available as part of open data programs.
In total, the dataset contains approximately 380B tokens. While Open Government aims to become a global resource, in its current state it mostly features open datasets from the US, France, European and international organizations.
The dataset comprises 16 collections curated through two different initiaties: Finance commons and Legal commons.… See the full description on the dataset page: https://huggingface.co/datasets/AgentPublic/open_government.Open-MOPD-Data
Open-MOPD Data
This repository contains the training and evaluation data released with
Open-MOPD, including mixed-domain supervised fine-tuning data, the shared
RL/OPD prompt mixture, and six evaluation benchmarks.
Dataset contents
Configuration
Description
Examples
rl_prompt_mix
Shared math, code, and instruction-following prompts for RL and OPD
86,931
sft_openr1_math_93k
Math SFT data in a unified think-tag format
93,733
sft_ocr_50k
Sampled… See the full description on the dataset page: https://huggingface.co/datasets/BytedTsinghua-SIA/Open-MOPD-Data.Salad-Data
Data Description
✊ How to use
from datasets import load_dataset
dataset = load_dataset("OpenSafetyLab/Salad-Data", name='base_set', split='train')
📊 Statistical Overview of Base Question
Type
Data Source
Nums
Self-instructed
Finetuned GPT-3.5
15,433
Open-Sourced
HH-harmless
4,184
HH-red-team
659
Advbench
359
Multilingual
230
Do-Not-Answer
189
ToxicChat
129
Do Anything Now
93
GPTFuzzer
42
Total
21,318… See the full description on the dataset page: https://huggingface.co/datasets/OpenSafetyLab/Salad-Data.smoltalk-chinese
Chinese SmolTalk Dataset [中文] [English]
[OpenCSG Community] [👾github] [wechat] [Twitter]
📖Technical Report
smoltalk-chinese is a Chinese fine-tuning dataset constructed with reference to the SmolTalk dataset. It aims to provide high-quality synthetic data support for training large language models (LLMs). The dataset consists entirely of synthetic data, comprising over 700,000 entries. It is specifically designed to enhance the performance of Chinese… See the full description on the dataset page: https://huggingface.co/datasets/opencsg/smoltalk-chinese.ccrawl-recrawl-domains
Common Crawl Domain Recrawl
Live fetches of the home page of every ranked domain in Common Crawl's web graph, rendered to Markdown as they are fetched
What is it?
Common Crawl's web graph ranks domains by how central they are, but it does not tell you what those domains actually serve today. This dataset walks that ranking from the top and fetches each domain's home page now, storing the response as one Parquet row with the body, the headers, the timing and the… See the full description on the dataset page: https://huggingface.co/datasets/open-index/ccrawl-recrawl-domains.moss-002-sft-data
Dataset Card for "moss-002-sft-data"
Dataset Summary
An open-source conversational dataset that was used to train MOSS-002. The user prompts are extended based on a small set of human-written seed prompts in a way similar to Self-Instruct. The AI responses are generated using text-davinci-003. The user prompts of en_harmlessness are from Anthropic red teaming data.
Data Splits
name
# samples
en_helpfulness.json
419049
en_honesty.json
112580… See the full description on the dataset page: https://huggingface.co/datasets/OpenMOSS-Team/moss-002-sft-data.open-github
OpenGitHub
What is it?
This dataset contains every public event on GitHub: every push, pull request, issue, star, fork, code review, release, and discussion across all public repositories. GitHub is the world's largest software development platform, home to over 200 million repositories and the daily work of tens of millions of developers, from individual open-source contributors to the engineering teams behind the most widely used software on earth.
The archive currently… See the full description on the dataset page: https://huggingface.co/datasets/open-index/open-github.opengloss-v1.3-definitions
See also OpenGloss v2.1 (2026-09-07): a deeper release of 109,633 of these headwords — sense-level ids, four reading levels, sense-tagged examples with spans, a judged relation graph, and retrieval supervision — published as a 16-dataset family. v1.3 remains the broader headword list.
OpenGloss Dictionary v1.3 (Definition-Level)
Dataset Summary
OpenGloss is a synthetic encyclopedic dictionary and semantic knowledge graph for English
that integrates lexicographic… See the full description on the dataset page: https://huggingface.co/datasets/mjbommar/opengloss-v1.3-definitions.OpenDebateEvidence-Anonymized
Dataset Card for OpenDebateEvidence (Anonymized)
A collection of evidence used in collegiate and high school debate competitions,
with all debater-identifying columns removed.
This is an anonymized redistribution of
Yusuf5/OpenCaselist. The
argumentative content is byte-for-byte unchanged. 26 of the original 45 columns
have been dropped. See Anonymization for exactly what was
removed and why.
Dataset Details
Dataset Description
This dataset is a… See the full description on the dataset page: https://huggingface.co/datasets/Hellisotherpeople/OpenDebateEvidence-Anonymized.opengloss-v1.3-dictionary
See also OpenGloss v2.1 (2026-09-07): a deeper release of 109,633 of these headwords — sense-level ids, four reading levels, sense-tagged examples with spans, a judged relation graph, and retrieval supervision — published as a 16-dataset family. v1.3 remains the broader headword list.
OpenGloss Dictionary v1.3 (Word-Level)
Dataset Summary
OpenGloss is a synthetic encyclopedic dictionary and semantic knowledge graph for English
that integrates lexicographic… See the full description on the dataset page: https://huggingface.co/datasets/mjbommar/opengloss-v1.3-dictionary.Dolci-Think-SFT-translated
Dolci-Think-SFT-translated
Machine translations of the Dolci-Think-SFT-32B dataset, produced with gemma-4-31B-it. The samples selected for translation are those where content_quality == "excellent" according to the propella annotations.
Columns
Each row is a translated conversation plus the result of a post-translation quality filter:
id — source record id.
messages — the translated conversation (list of {content, role}).
filter_pass — true if the row passed… See the full description on the dataset page: https://huggingface.co/datasets/openeurollm/Dolci-Think-SFT-translated.openvino-arc140v-lunarlake
OpenVINO local-inference on an Intel Arc 140V (Lunar Lake) iGPU
Reference performance data for running local models on a single Intel Core Ultra 7 258V
(Lunar Lake) laptop with the integrated Intel Arc 140V (Xe2) GPU, via OpenVINO. All
inference runs on the iGPU; the NPU stays idle throughout, confirmed by the telemetry here.
This is reference characterization shared by a non-expert contributor — careful measurements
on one machine, offered so others can compare and correct, not… See the full description on the dataset page: https://huggingface.co/datasets/blairducrayoppat/openvino-arc140v-lunarlake.openthoughts3-en-ar-midtrain
openthoughts3-en-ar-midtrain
Arabic translation of the OpenThoughts3_1.2M split of smoltalk2 (config Mid): long mathematical reasoning traces with <think> blocks, in a two-message user/assistant format. Translated with google/gemma-4-12B-it (bf16, greedy) on A100s. All 1,135,104 source rows are present, none dropped.
The pipeline segments each message into prose and verbatim blocks (code, LaTeX, tables, and inline non-translatables are masked and never sent to the model)… See the full description on the dataset page: https://huggingface.co/datasets/SultanR/openthoughts3-en-ar-midtrain.openthoughts4-code-9168-prompts-qwen3-30b-a3b-thinking-2507-n16-flattened-logprobs-k16
OpenThoughts-4 Code SDG: Qwen3-30B-A3B-Thinking-2507 (n=16, top-16 logprobs)
Synthetic generations from
Qwen/Qwen3-30B-A3B-Thinking-2507
on the Marin OpenThoughts-4 code SDG prompt
set.
Each prompt is sampled n=16 times, and for every generated token the dataset
stores the chosen-token log probability plus the top-16 log probabilities
over the vocabulary, enabling distillation, KL-style fine-tuning,
reranking, and uncertainty analysis.
Generation setup
Field… See the full description on the dataset page: https://huggingface.co/datasets/marin-community/openthoughts4-code-9168-prompts-qwen3-30b-a3b-thinking-2507-n16-flattened-logprobs-k16.ccrawl-recrawl-urls
Common Crawl URL Recrawl
Live refetches of pages from Common Crawl's URL index, with the body inline and the text already extracted
What is it?
Common Crawl publishes which URLs it saw and when, but the page bodies live in WARC archives that are awkward to query and are as old as the crawl that made them. This dataset takes the URL index for a single monthly crawl and fetches the pages again now, storing each response as one Parquet row with the body, the… See the full description on the dataset page: https://huggingface.co/datasets/open-index/ccrawl-recrawl-urls.snowball-replay-index
Snowball replay index
This dataset is a compact membership and ordering index for an approximate replay of Snowball's 10,372,343,704,053-token
data store. It contains no source text or token arrays. The 6,301 Parquet files contain three columns:
source_id: logical source key; join it to the source_id field in sources.json
document_id: the retained XXH3-128 content hash as 16 bytes
bucket_id: domain_cluster * 5 + quality_bucket
Document join contract
document_id… See the full description on the dataset page: https://huggingface.co/datasets/open-athena/snowball-replay-index.open-library
Open Library
The complete Open Library catalog in clean, analysis-ready Parquet. 150.0M+ records across 11 entity types, from ISBNs and author bios to reading logs and Wikidata links.
What is it?
Open Library is a complete snapshot of the Open Library database, an open project of the Internet Archive with the mission of creating "one web page for every book ever published." The catalog is community-edited and contains bibliographic records for millions of authors, works… See the full description on the dataset page: https://huggingface.co/datasets/open-index/open-library.openmath-reasoning-medley
OpenMath Reasoning Curated Dataset
This dataset contains curated math-solution generations for problems from
nvidia/OpenMathReasoning.
Overview
Source dataset: nvidia/OpenMathReasoning
Problems and expected answers: preserved from the source dataset
Solutions: generated during curation runs and stored in generated_solution
Per-example model tracking: stored in generation_model
Statistics
Split
Examples
Previously published
Added this upload… See the full description on the dataset page: https://huggingface.co/datasets/PursuitOfDataScience/openmath-reasoning-medley.ODA-Math-460k
ODA-Math-460k
ODA-Math-460k is a large-scale math reasoning dataset curated from top-performing open mathematics corpora (selected via the OpenDataArena leaderboard) and refined through deduplication, benchmark decontamination, LLM-based filtering, and verifier-backed response distillation.It targets a “learnable but challenging” difficulty band: non-trivial for smaller models yet solvable by stronger reasoning models.
🧠 Dataset Summary
Domain: Mathematics… See the full description on the dataset page: https://huggingface.co/datasets/OpenDataArena/ODA-Math-460k.openthoughts4-code-9168-prompts-qwen3-32b-n16-flattened-logprobs-k16
OpenThoughts-4 Code SDG: Qwen3-32B (n=16, top-16 logprobs)
Synthetic generations from
Qwen/Qwen3-32B
on the Marin OpenThoughts-4 code SDG prompt
set.
Each prompt is sampled n=16 times, and for every generated token the dataset
stores the chosen-token log probability plus the top-16 log probabilities
over the vocabulary, enabling distillation, KL-style fine-tuning,
reranking, and uncertainty analysis.
Generation setup
Field
Value
Generator model… See the full description on the dataset page: https://huggingface.co/datasets/marin-community/openthoughts4-code-9168-prompts-qwen3-32b-n16-flattened-logprobs-k16.recursive-task-synthesis-glm-5.3-rollouts
GLM 5.3 agentic rollouts on Recursive-Task-Synthesis
This dataset catalogs the full collection made from the pinned
Recursive-Task-Synthesis dataset revision
be44f96808d5a9b599d5cb024341ff00091adeb7. The repository includes approximately 260.5 GiB of trajectory payload tar shards.
Contents at a glance
Item
Count
Source tasks considered
37,284
Source candidates inspected
19,368
Converted tasks after source filters
18,600
Tasks passing gold… See the full description on the dataset page: https://huggingface.co/datasets/open-athena/recursive-task-synthesis-glm-5.3-rollouts.SlimPajama-Meta-rater-Readability-30B
Top 30B token SlimPajama Subset selected by the Readability rater
This repository contains the dataset described in the paper Meta-rater: A Multi-dimensional Data Selection Method for Pre-training Language Models.
Code: https://github.com/opendatalab/Meta-rater
Dataset Description
This dataset contains the top 30B tokens from the SlimPajama-627B corpus, selected using the Readability dimension of the PRRC (Professionalism, Readability, Reasoning, Cleanliness) framework.… See the full description on the dataset page: https://huggingface.co/datasets/opendatalab/SlimPajama-Meta-rater-Readability-30B.MathLake
MathLake: A Large-Scale Mathematics Dataset
MathLake is a massive collection of 8.3 million mathematical problems aggregated from over 50 open-source datasets. Unlike datasets focused on filtering for the highest quality solutions immediately, MathLake prioritizes query comprehensiveness, serving as a universal "raw ore" for researchers to curate, distill, or annotate further. The dataset provides annotations for Difficulty, Format, and Subject, covering diverse mathematical fields… See the full description on the dataset page: https://huggingface.co/datasets/OpenDataArena/MathLake.open-jobs-daily
Open Jobs Daily 🌍💼
Commercial vendors often charge upwards of $1,000/month for firehose access to global job market data. This dataset democratizes that access.
The main creator of this dataset is Reddit user OminousLatinWord. For convenience, I converted the dataset to Parquet files and uploaded it to Hugging Face.
Source Data & Attribution
Creator: Created and originally open-sourced by Reddit user OminousLatinWord under a CC0 license.
Source Release:… See the full description on the dataset page: https://huggingface.co/datasets/Yigit-Karaman/open-jobs-daily.