OpenAI Launches GPT-5.5 Agentic Model
OpenAI released GPT-5.5 on April 23, its newest frontier model and the company’s most capable agentic system to date, designed to accept a messy multi-part task and plan, execute, and complete it without requiring step-by-step human guidance. Summary OpenAI released GPT-5.5 on April 23, 2026, positioning it as a new class of agentic intelligence built
