ChatGPT Pulse delivers morning updates based on your chat history (arstechnica.com)

OpenAI launched ChatGPT Pulse, a Pro-only mobile preview that turns ChatGPT from a reactive chatbot into a proactive assistant by delivering personalized daily “cards” of updates each morning. Pulse performs “asynchronous research” overnight by analyzing your chat history, saved preferences and — if you opt in — Gmail and Google Calendar data to surface short, illustrated summaries on topics it deems relevant (project follow-ups, travel tips, dinner ideas, meeting agendas, etc.). Updates arrive once per day, disappear after 24 hours unless saved or expanded into a normal chat, and let users rate items or request specific topics via a “curate” button. The feature signals a shift toward assistants that push useful context without user prompting, enabling lightweight automation (draft agendas, reminders, recommendations) tied to calendar and email. Key technical and product implications: Pulse depends on LLM-driven query/response generation run asynchronously, so relevance and accuracy vary by topic and by how explicitly users signal preferences — OpenAI’s tests found usefulness improves when users tell the model what to surface. Privacy and control are addressed by opt-in integrations and toggle settings, but the usual risks of personalization via LLMs remain (variable reliability, potential hallucination). For teams and power users, Pulse could streamline daily workflows; for researchers and privacy-conscious users, it raises trade-offs between convenience and control over data-driven suggestions.