According to OpenAI, GPT-5.1 upgrades GPT-5 with a smarter, more conversational ChatGPT and easier customization, with the rollout starting today for everyone, beginning with paid users. Source: OpenAI. Based on OpenAI’s confirmed timeline and staged deployment, traders can align event-driven monitoring around this release window for AI-related market narratives in crypto without inferring price impact. Source: OpenAI.