OpenAI Launches GPT-5.5 Alongside AWS Deployment…SORA Sunset on 4/26

OpenAI deployed GPT-5.5 (codename Spud) to ChatGPT Plus, Pro, Business, and Enterprise tiers as well as the Codex assistant on April 30, simultaneously announcing official AWS marketplace availability for OpenAI models, Codex, and Managed Agents. The SORA video tool reached end-of-service on April 26, with computational resources redirected toward inference-optimized GPT-5.5 and expanded workspace agents.