Datasets:

validname
/

reddit-ai-detection

language: en
license: other
task_categories:
  - text-classification
tags:
  - ai-detection
  - reddit
  - human-written
  - nlp
size_categories:
  - 10K<n<100K
configs:
  - config_name: default
    data_files:
      - split: pre_2022
        path: data/pre_2022-*
      - split: post_2022
        path: data/post_2022-*
dataset_info:
  features:
    - name: text
      dtype: large_string
    - name: subreddit
      dtype: large_string
    - name: domain
      dtype: large_string
    - name: post_type
      dtype: large_string
    - name: year
      dtype: int64
    - name: word_count
      dtype: int64
    - name: length_bin
      dtype: large_string
    - name: score
      dtype: int64
    - name: created_utc
      dtype: int64
    - name: id
      dtype: large_string
  splits:
    - name: pre_2022
      num_bytes: 14860525
      num_examples: 19960
    - name: post_2022
      num_bytes: 13977964
      num_examples: 19985
  download_size: 16462550
  dataset_size: 28838489

Reddit AI-Detection Dataset

Human-written Reddit posts and comments collected for AI-generated text detection research (CSCI 544 – Who Wrote This?).

All records in the pre-2022 split pre-date widespread LLM deployment and can be treated as ground-truth human-authored text for detector calibration.

Splits

File	Records	Period
`data/reddit_pre_2022.zip`	2,257	2005 – 2021
`data/reddit_post_2022.zip`	79	2022 – 2026
`data/reddit_combined.zip`	2,336	2005 – 2026

Schema

Column	Type	Description
`text`	str	Post / comment body
`subreddit`	str	Source subreddit
`domain`	str	technology · news · science · finance · entertainment
`post_type`	str	`submission` or `comment`
`year`	int	UTC year of posting
`word_count`	int	Approximate word count
`length_bin`	str	short / medium / long / very_long
`score`	int	Reddit score at collection time
`created_utc`	int	Unix timestamp
`id`	str	Reddit post ID

Citation

Data originally collected by Pushshift / u/raiderbdev, packaged by u/Watchful1.