According to Sam Altman (@sama), OpenAI has launched GPT-5.1 in the API, maintaining the same pricing as GPT-5. The release includes specialized models gpt-5.1-codex and gpt-5.1-codex-mini, designed for long-running coding tasks, which expands AI-driven software development capabilities. Additionally, prompt caching duration has been extended to 24 hours, significantly optimizing operational efficiency for businesses managing large-scale AI workflows. This update offers practical advantages for enterprise AI adoption, enabling more reliable automation and cost-effective coding solutions (Source: @sama, Nov 13, 2025).