Introducing GPT-5.5
OpenAI released GPT-5.5, its most capable model yet, optimized for agentic coding, computer use, and long-context scientific research with improved autonomy.
Excerpt
Introducing GPT-5.5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.
Read at source: https://openai.com/index/introducing-gpt-5-5