Is GPT-2 Open Source? What You Need to Know

From “Too Dangerous” to Open Source: The Untold Story and Legacy of GPT-2

When OpenAI introduced GPT-2 (Generative Pre-trained Transformer 2) in February 2019, it didn’t just spark a technical revolution—it ignited a massive industry-wide debate on AI safety, ethics, and open-source philosophy. Boasting 1.5 billion parameters trained on 8 million web pages, GPT-2 could generate strikingly coherent, contextually rich prose from simple text prompts.