# GPT-2: AI model fact sheet

- **Provider:** openai
- **Released:** 2019-11-05
- **Context window:** 1,024 tokens
- **Parameters:** 1.5B
- **Capabilities:** conversation, summarization, analysis

A direct scale-up of GPT-1 with 1.5 billion parameters, trained on 8 million web pages. Known for its ability to generate coherent text, sometimes indistinguishable from humans, but could be repetitive.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gpt-2