According to @OpenAI, GPT-5.2 is part of ongoing model improvements focused on reducing over-refusals and latency, and GPT-5.1 in ChatGPT will remain available to paid users for three months as a legacy model, source: OpenAI on X, Dec 11, 2025. Measured from the Dec 11, 2025 announcement, the three-month window implies availability into approximately March 2026, providing a clear migration timeline for developers and enterprise users, source: OpenAI on X, Dec 11, 2025. The post did not disclose additional details such as API pricing, broader rollout cadence, or deprecation specifics beyond the stated window, source: OpenAI on X, Dec 11, 2025. For trading relevance, these time-bound milestones and performance targets offer concrete catalysts to track across AI infrastructure equities and AI-linked crypto tokens, with all timing cues derived from the official post, source: OpenAI on X, Dec 11, 2025.