LLMOpen weights
GPT-2
OpenAI
Updated May 21, 2026 · Benchmarks via Artificial Analysis, specs & pricing via OpenRouter · Methodology · Report an error
Superseded by GPT-3
Specifications
- Type
- LLM
- Access
- Open weights
- Released
- February 14, 2019
- Parameters
- 1.5B
- Context window
- 1,024 tokens
- Input
- Text
- Output
- Text
Our take
Scaled up GPT to surprisingly fluent open-ended text and zero-shot task ability — notorious for OpenAI’s staged release over misuse fears.