# GPT-1: AI model fact sheet

- **Provider:** openai
- **Released:** 2018-06-11
- **Context window:** 512 tokens
- **Parameters:** 117M
- **Capabilities:** conversation, summarization

The first large-scale transformer-based language model released by OpenAI, trained on the BooksCorpus dataset. This version is accessed via the Hugging Face model hub (`openai-community/openai-gpt`).

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/openai-gpt