Why OpenAI Shipped GPT-5.5 Just 6 Weeks After 5.4

Six weeks. That's the gap between GPT-5.4 and GPT-5.5 (codename Spud, per Axios). Until this year, frontier labs measured release cycles in quarters, not weeks. GPT-5.5 is OpenAI's latest flagship language model, codenamed Spud, released April 23, 20...