GPT-5.5 Is Not Just a Better Model. It Is a Deployment Story.

On April 23, 2026, OpenAI introduced GPT-5.5 . The obvious story is performance: better coding, stronger tool use, more persistence, fewer tokens, and GPT-5.4-class latency. But the more important story is what came with it. OpenAI did not just ship a benchmark table. It shipped a system card , a long deployment-safety write-up on misalignment and internal deployment , and a public Bio Bug Bounty…