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metadata
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  - config_name: stack-edu-sql
    features:
      - name: score
        dtype: float64
      - name: text
        dtype: string
    splits:
      - name: train
        num_bytes: 6493180595
        num_examples: 812574
    download_size: 824524269
    dataset_size: 6493180595
  - config_name: stack-edu-swift
    features:
      - name: score
        dtype: float64
      - name: text
        dtype: string
    splits:
      - name: train
        num_bytes: 1752237693
        num_examples: 631836
    download_size: 596884487
    dataset_size: 1752237693
  - config_name: stack-edu-typescript
    features:
      - name: score
        dtype: float64
      - name: text
        dtype: string
    splits:
      - name: train
        num_bytes: 2285209604
        num_examples: 957147
    download_size: 808948259
    dataset_size: 2285209604
configs:
  - config_name: beta-code-short
    data_files:
      - split: train
        path: beta-code-short/train-*
  - config_name: dclm-edu-2k
    data_files:
      - split: train
        path: dclm-edu-2k/train-*
  - config_name: dclm-edu-s1
    data_files:
      - split: train
        path: dclm-edu-s1/train-*
  - config_name: dclm-edu-s10
    data_files:
      - split: train
        path: dclm-edu-s10/train-*
  - config_name: dclm-edu-s11
    data_files:
      - split: train
        path: dclm-edu-s11/train-*
  - config_name: dclm-edu-s12
    data_files:
      - split: train
        path: dclm-edu-s12/train-*
  - config_name: dclm-edu-s2
    data_files:
      - split: train
        path: dclm-edu-s2/train-*
  - config_name: dclm-edu-s3
    data_files:
      - split: train
        path: dclm-edu-s3/train-*
  - config_name: dclm-edu-s4
    data_files:
      - split: train
        path: dclm-edu-s4/train-*
  - config_name: dclm-edu-s5
    data_files:
      - split: train
        path: dclm-edu-s5/train-*
  - config_name: dclm-edu-s6
    data_files:
      - split: train
        path: dclm-edu-s6/train-*
  - config_name: dclm-edu-s7
    data_files:
      - split: train
        path: dclm-edu-s7/train-*
  - config_name: dclm-edu-s8
    data_files:
      - split: train
        path: dclm-edu-s8/train-*
  - config_name: dclm-edu-s9
    data_files:
      - split: train
        path: dclm-edu-s9/train-*
  - config_name: finemath-4plus
    data_files:
      - split: train
        path: finemath-4plus/train-*
  - config_name: finepdfs-edu-en-2k
    data_files:
      - split: train
        path: finepdfs-edu-en-2k/train-*
  - config_name: finepdfs-edu-en-sh5-0-1k
    data_files:
      - split: train
        path: finepdfs-edu-en-sh5-0-1k/train-*
  - config_name: finepdfs-edu-en-sh5-1-1k
    data_files:
      - split: train
        path: finepdfs-edu-en-sh5-1-1k/train-*
  - config_name: finepdfs-edu-en-sh5-2-1k
    data_files:
      - split: train
        path: finepdfs-edu-en-sh5-2-1k/train-*
  - config_name: finepdfs-edu-en-sh5-3-1k
    data_files:
      - split: train
        path: finepdfs-edu-en-sh5-3-1k/train-*
  - config_name: finepdfs-edu-en-sh5-4-1k
    data_files:
      - split: train
        path: finepdfs-edu-en-sh5-4-1k/train-*
  - config_name: finepdfs-edu-pl-2k
    data_files:
      - split: train
        path: finepdfs-edu-pl-2k/train-*
  - config_name: finepdfs-pl-1k
    data_files:
      - split: train
        path: finepdfs-pl-1k/train-*
  - config_name: finepdfs-pl-2k
    data_files:
      - split: train
        path: finepdfs-pl-2k/train-*
  - config_name: fineweb-edu-2025-08-2k
    data_files:
      - split: train
        path: fineweb-edu-2025-08-2k/train-*
  - config_name: fineweb-edu-2025-13-2k
    data_files:
      - split: train
        path: fineweb-edu-2025-13-2k/train-*
  - config_name: fineweb-edu-2025-18-1k
    data_files:
      - split: train
        path: fineweb-edu-2025-18-1k/train-*
  - config_name: fineweb-edu-2025-18-2k
    data_files:
      - split: train
        path: fineweb-edu-2025-18-2k/train-*
  - config_name: fineweb-edu-2025-18-4k
    data_files:
      - split: train
        path: fineweb-edu-2025-18-4k/train-*
  - config_name: fineweb-edu-2025-21-1k
    data_files:
      - split: train
        path: fineweb-edu-2025-21-1k/train-*
  - config_name: fineweb-edu-2025-21-2k
    data_files:
      - split: train
        path: fineweb-edu-2025-21-2k/train-*
  - config_name: fineweb-edu-2025-21-4k
    data_files:
      - split: train
        path: fineweb-edu-2025-21-4k/train-*
  - config_name: fineweb-edu-2025-26
    data_files:
      - split: train
        path: fineweb-edu-2025-26/train-*
  - config_name: fineweb-edu-s100
    data_files:
      - split: train
        path: fineweb-edu-s100/train-*
  - config_name: fineweb-edu-s100-sh3-1k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh3-1k/train-*
  - config_name: fineweb-edu-s100-sh3-2k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh3-2k/train-*
  - config_name: fineweb-edu-s100-sh3-4k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh3-4k/train-*
  - config_name: fineweb-edu-s100-sh4-1k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh4-1k/train-*
  - config_name: fineweb-edu-s100-sh4-2k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh4-2k/train-*
  - config_name: fineweb-edu-s100-sh4-4k
    data_files:
      - split: train
        path: fineweb-edu-s100-sh4-4k/train-*
  - config_name: fineweb-s10-2k
    data_files:
      - split: train
        path: fineweb-s10-2k/train-*
  - config_name: fineweb2-hq-pl
    data_files:
      - split: train
        path: fineweb2-hq-pl/train-*
  - config_name: fineweb2-pl-2k
    data_files:
      - split: train
        path: fineweb2-pl-2k/train-*
  - config_name: finewiki-en
    data_files:
      - split: train
        path: finewiki-en/train-*
  - config_name: finewiki-en-shuffled
    data_files:
      - split: train
        path: finewiki-en-shuffled/train-*
  - config_name: finewiki-pl
    data_files:
      - split: train
        path: finewiki-pl/train-*
  - config_name: finewiki-pl-shuffled
    data_files:
      - split: train
        path: finewiki-pl-shuffled/train-*
  - config_name: github-code-clean-small-2k
    data_files:
      - split: train
        path: github-code-clean-small-2k/train-*
  - config_name: github-jupyter
    data_files:
      - split: train
        path: github-jupyter/train-*
  - config_name: infiwebmath-4plus
    data_files:
      - split: train
        path: infiwebmath-4plus/train-*
  - config_name: kaggle
    data_files:
      - split: train
        path: kaggle/train-*
  - config_name: megamath-web-pro-2k
    data_files:
      - split: train
        path: megamath-web-pro-2k/train-*
  - config_name: megamath-web-pro-max-sh4-0
    data_files:
      - split: train
        path: megamath-web-pro-max-sh4-0/train-*
  - config_name: megamath-web-pro-max-sh4-1
    data_files:
      - split: train
        path: megamath-web-pro-max-sh4-1/train-*
  - config_name: megamath-web-pro-max-sh4-2
    data_files:
      - split: train
        path: megamath-web-pro-max-sh4-2/train-*
  - config_name: megamath-web-pro-max-sh4-3
    data_files:
      - split: train
        path: megamath-web-pro-max-sh4-3/train-*
  - config_name: notebooks-all
    data_files:
      - split: train
        path: notebooks-all/train-*
  - config_name: pp2-algebraic-stack
    data_files:
      - split: train
        path: pp2-algebraic-stack/train-*
  - config_name: pp2-arxiv
    data_files:
      - split: train
        path: pp2-arxiv/train-*
  - config_name: stack-edu-c
    data_files:
      - split: train
        path: stack-edu-c/train-*
  - config_name: stack-edu-cpp
    data_files:
      - split: train
        path: stack-edu-cpp/train-*
  - config_name: stack-edu-csharp
    data_files:
      - split: train
        path: stack-edu-csharp/train-*
  - config_name: stack-edu-go
    data_files:
      - split: train
        path: stack-edu-go/train-*
  - config_name: stack-edu-java
    data_files:
      - split: train
        path: stack-edu-java/train-*
  - config_name: stack-edu-javascript
    data_files:
      - split: train
        path: stack-edu-javascript/train-*
  - config_name: stack-edu-markdown
    data_files:
      - split: train
        path: stack-edu-markdown/train-*
  - config_name: stack-edu-php
    data_files:
      - split: train
        path: stack-edu-php/train-*
  - config_name: stack-edu-python
    data_files:
      - split: train
        path: stack-edu-python/train-*
  - config_name: stack-edu-ruby
    data_files:
      - split: train
        path: stack-edu-ruby/train-*
  - config_name: stack-edu-rust
    data_files:
      - split: train
        path: stack-edu-rust/train-*
  - config_name: stack-edu-shell
    data_files:
      - split: train
        path: stack-edu-shell/train-*
  - config_name: stack-edu-sql
    data_files:
      - split: train
        path: stack-edu-sql/train-*
  - config_name: stack-edu-swift
    data_files:
      - split: train
        path: stack-edu-swift/train-*
  - config_name: stack-edu-typescript
    data_files:
      - split: train
        path: stack-edu-typescript/train-*

Reactive AI / Beta Pre-Train Corpus

Pre-training corpus for RxT-Beta models, created from public & open datasets. Includes high-quality english and polish web crawl data, mathematic and scientific subsets, and code in different programming languages.

2k subsets are filtered for 1024-2048 tokens, except MegaMath Web Pro and GitHub Code subsets, that were filtered for 512-2048 tokens

Subsets & original datasets

  • FineWeb-Edu
    • fineweb-edu-s100 (51.3M examples) - 50% of 'sample-100BT' subset
    • fineweb-edu-s100-sh3-1k (18.3M examples)
    • fineweb-edu-s100-sh3-2k (4.69M examples) - third 25% of 'sample-100BT' subset filtered for 1024-2048 tokens examples
    • fineweb-edu-s100-sh3-4k (2.32M examples)
    • fineweb-edu-s100-sh4-1k (14.8M examples)
    • fineweb-edu-s100-sh4-2k (3.90M examples) - fourth 25% of 'sample-100BT' subset filtered for 1024-2048 tokens examples
    • fineweb-edu-s100-sh4-4k (1.86M examples)
    • fineweb-edu-2025-08-2k (3.77M examples) - CC-MAIN-2025-08 subset, filtered for 1024-2048 tokens examples
    • fineweb-edu-2025-13-2k (3.95M examples) - CC-MAIN-2025-13 subset, filtered for 1024-2048 tokens examples
    • fineweb-edu-2025-18-1k (11.3M examples)
    • fineweb-edu-2025-18-2k (4.13M examples) - CC-MAIN-2025-18 subset, filtered for 1024-2048 tokens examples
    • fineweb-edu-2025-18-4k (1.88M examples)
    • fineweb-edu-2025-21-1k (10.1M examples)
    • fineweb-edu-2025-21-2k (3.76M examples) - CC-MAIN-2025-21 subset, filtered for 1024-2048 tokens examples
    • fineweb-edu-2025-21-4k (1.73M examples)
    • fineweb-edu-2025-26 (14M examples) - CC-MAIN-2025-26 subset - latest crawl
  • FineWiki
    • finewiki-en (6.6M examples) - english wikipedia subset
    • finewiki-pl (1.5M examples) - polish wikipedia subset
  • FineWeb
    • fineweb-s10-2k (1.73M examples) - 'sample-10BT' subset, filtered for 1024-2048 tokens examples
  • FineWeb2-HQ
    • fineweb2-hq-pl (13.3M examples) - high-quality filtered polish web crawl
  • FineWeb-2
    • fineweb2-pl-2k (2.13M examples) - latest 30% of polish subset, filtered for 1024-2048 tokens examples
  • DCLM-Edu
    • dclm-edu-2k (3.59M examples) - examples filtered for 3 and higher educational score and 1024-2048 tokens
    • dclm-edu-s1 (1.91M examples)
    • dclm-edu-s2 (1.93M examples)
    • dclm-edu-s3 (1.90M examples)
    • dclm-edu-s4 (1.93M examples)
    • dclm-edu-s5 (1.92M examples)
    • dclm-edu-s6 (1.93M examples)
    • dclm-edu-s7 (1.92M examples)
    • dclm-edu-s8 (1.91M examples)
    • dclm-edu-s9 (1.92M examples)
  • FinePdfs-Edu
    • finepdfs-edu-en-2k (4.38M examples) - english subset filtered for 1024-2048 tokens
    • finepfds-edu-pl-2k (0.18M examples) - polish subset filtered for 1024-2048 tokens (not used, as it's duplicated in base finepdfs-pl-2k)
    • finepdfs-edu-en-sh5-0-1k (1.88M examples)
    • finepdfs-edu-en-sh5-1-1k (1.87M examples)
    • finepdfs-edu-en-sh5-2-1k (1.86M examples)
    • finepdfs-edu-en-sh5-3-1k (1.84M examples)
    • finepdfs-edu-en-sh5-4-1k (1.78M examples)
  • FinePdfs
    • finepfds-pl-2k (1.65M examples) - polish subset filtered for 1024-2048 tokens
    • finepdfs-pl-1k (4.6M examples)
  • FineMath
    • finemath-4plus (6.7M examples) - full subset with best math quality
    • infiwebmath-4plus (6.3M examples) - full subset with best math quality
  • MegaMath
    • megamath-web-pro-2k (5.38M examples) - filtered for 512-2048 tokens MegaMath Web Pro subset
  • MegaMath-Web-Pro-Max
    • megamath-web-pro-max-sh4-0 (6.26M examples)
    • megamath-web-pro-max-sh4-1 (5.98M examples)
    • megamath-web-pro-max-sh4-2 (5.69M examples)
    • megamath-web-pro-max-sh4-3 (5.77M examples)
  • ProofPile-2
    • pp2-arxiv (4M examples) - arXiv research papers
    • pp2-algebraic-stack (3.37M examples) - mathematic code examples
  • Notebooks:
  • Code:
    • beta-code-short (4.51M examples) - filtered and combined code from codeparrot/codeparrot-clean and codeparrot/github-code-clean
    • github-code-clean-small-2k (8.17M examples) - filtered for 512-2048 tokens code from loubnabnl/github-code-clean-small
    • Stack-Edu
      • stack-edu-c (1.38M examples)
      • stack-edu-cpp (1.9M examples)
      • stack-edu-csharp (1.7M examples)
      • stack-edu-go (0.77M examples)
      • stack-edu-java (3.99M examples)
      • stack-edu-javascript (2.71M examples)
      • stack-edu-php (1.67M examples)
      • stack-edu-python (5.6M examples)
      • stack-edu-ruby (0.96M examples)
      • stack-edu-rust (0.51M examples)
      • stack-edu-shell (1.3M examples)
      • stack-edu-sql (0.81M examples)
      • stack-edu-swift (0.63M examples)
      • stack-edu-typescript (0.96M examples)