OpenAI launches GPT‑5.5 Instant with higher factuality and Subquadratic unveils 12‑M token context window
OpenAI updated its default ChatGPT model to GPT‑5.5 Instant, delivering better factual accuracy, lower hallucination rates, and stronger personalization using user context. Subquadratic announced a new model with a 12‑million‑token context window that claims to break the quadratic attention cost, with a 50‑million‑token version planned. The newsletter also highlights that only 15% of organizations are ready for agentic AI at scale, emphasizing data quality and governance as major blockers.