ParlAI is set up into several main directories:

• core: contains the primary code for the framework
• agents: contains agents which can interact with the different tasks (e.g. machine learning models)
• scripts: contains examples of different loops (building dictionary, train/eval, displaying data)
• tasks: contains code for the different tasks/datasets available from within ParlAI
• zoo: contains code to directly download and use pretrained models from our model zoo
• mturk: contains code for setting up Mechanical Turk, as well as sample MTurk tasks
• chat_service: contains code for interfacing with chat services, such as Facebook Messenger

See the top level README for more information (one directory above).