OpenAI Launches GPT-5.5 — Agentic Multi-Step Model With Doubled API Price, Now in GitHub Copilot
OpenAI’s latest flagship model landed on April 23, 2026, and the company is not being subtle about who it’s for: GPT-5.5 is built for agentic workloads. The model plans, uses tools, checks its own work, navigates ambiguity, and keeps going. The price tag — double its predecessor — signals that OpenAI views this as infrastructure for serious production deployments, not a consumer curiosity. What GPT-5.5 Actually Does The official framing is “smartest and most intuitive to use model yet,” which is the kind of thing every model release says. But the specifics here are more concrete than usual. ...