According to @OpenAI, eight chat styles are now available in the ChatGPT personalization tab, listed as Default, Professional, Candid, Quirky, Friendly formerly Listener, Efficient formerly Robot, Nerdy, and Cynical, source: OpenAI on X, Nov 12, 2025. The post frames this strictly as a user tone and style customization update and discloses no details on pricing, API changes, enterprise rollout, or regional availability, source: OpenAI on X, Nov 12, 2025. For trading relevance, the announcement contains no references to cryptocurrencies, tokens, or blockchain integrations, indicating no direct crypto catalyst from this update, source: OpenAI on X, Nov 12, 2025. Traders in AI equities and AI-related crypto tokens can monitor official follow-ups for monetization or platform changes, as none were included in this post, source: OpenAI on X, Nov 12, 2025.