OpenAI has introduced GPT-5.1-Codex-Max, an improved version of its existing Codex model. This new model claims to be faster and more intelligent, making it suitable for large-scale coding projects with enhanced reasoning capabilities and increased token efficiency. --- Why it matters: This matters to AI researchers because the development of more efficient and capable agentic coding models like GPT-5.1-Codex-Max can accelerate progress in areas such as software development and potentially lead to breakthroughs in other domains. Source: https://openai.com/index/gpt-5-1-codex-max