OpenAI's GPT-5.5 is here, and it's no potato: narrowly beats Anthropic's Claude Mythos Preview on Terminal-Bench 2.0
OpenAI has launched GPT-5.5, a new large language model that outperforms its predecessor and competitors in various benchmarks, particularly excelling in coding and complex tasks with increased efficiency and autonomy. The model is available to select subscription users and is designed to handle intricate workflows with less guidance, though it comes at a higher cost compared to previous versions.
The key insight for you is that OpenAI's newly launched GPT-5.5 model stands out for its ability to handle complex tasks autonomously, particularly in coding, computer use, and scientific research, enhancing productivity with fewer tokens and increased speed. It surpasses competitors on several benchmarks, suggesting a significant advantage in agentic work and economic knowledge tasks. This positions GPT-5.5 as a pivotal tool for professionals needing advanced AI capabilities in high-stakes environments, although access is currently limited to certain subscription tiers and API access is forthcoming.