OpenAI launches GPT-5.5, its first fully retrained base model since GPT-4.5, targeting enterprise with agentic coding, computer use, and knowledge work ...

OpenAI Releases GPT-5.5, a Fully Retrained Agentic Model That Scores 82.7% on Terminal-Bench 2.0 and 84.9% on GDPval ...

OpenAI GPT-5.5 rollout sees enhanced benchmarks and pricing, offering state-of-the-art intelligence with increased efficiency ...