Train a neural network optimized for generating Reddit subreddit posts
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Latest commit 0b0eeab Apr 20, 2018

Subreddit Generator

Train a neural network optimized for generating Reddit subreddit posts based off of any number of subreddits! Subreddit Generator automatically downloads as many Reddit submissions as you want from as many subreddits as you want. Blend wildly different subreddits for hilarity!

Subreddit Generator is based off of textgenrnn, and trains the network using context labels for better submission synthesis.


After installing the dependencies, open config.yml and at the top, add the project_id of a Google Compute Engine project owned by an account with access to BigQuery (free). Below that, specify the list of subreddit(s) you wish to retrieve. You can then change the time horizon of Reddit data to check using start_month and end_month (between December 2015 and December 2017), and change the number of top submissions retieved from each subreddit during that timeframe. You can also configure the num_epochs and whether to use the pretrained model or train a new_model. Then simply run:


On the first time running the script, the console will ask you to authenticate with Google; do so.

The script will automatically save the weights (+ config and vocab for if new_model) for the trained model, which can then be loaded into textgenrnn and used anywhere.

The included askreddit_weights.hdf5 file + relevant config info was trained on the top 50,000 /r/AskReddit submissions in 2017. You can load it and generate text from it simply with:

from textgenrnn import textgenrnn

You can view examples of the output at various temperatures in the /example_output folder.


Google BigQuery gives 1 TB of data processing for free, and it will only charge for the data processed. For the default time range of 2017, BigQuery will consume 8.68 GB worth of data (regardless of how many subreddits and how many submissions you retrieve), which gives you plenty of leeway. Adjusting the time frame consumes data proportionately.


  • textgenrnn
  • tensorflow (either CPU or GPU flavors)
  • pandas
  • pandas-gbq


Max Woolf (@minimaxir)

Max's open-source projects are supported by his Patreon. If you found this project helpful, any monetary contributions to the Patreon are appreciated and will be put to good creative use.




Jason Baumgartner for collecting the Reddit data, and Felipe Hoffa for putting it in BigQuery.