I really liked this line from Matei's opening remarks at #RSS2026#: "Wait for your current conference buddies to become the big names in the field." Today's peers are tomorrow's leaders.

When I first started at X, this is one of the things I did a deep dive on because I felt it was critical to the integrity of the experienced. I tasked our Threat Disruption team to investigate a number of trends that seemed artificial. The findings: We could not find meaningful examples of foreign interference in US policy discussions, except people gaming rev share in developing countries. This is what motivated the release of the Country of Origin feature and significant changes to the rev share algorithm. The most deranged & divisive replies generally were from residential IPs in the United States—with no signs of using a VPN. Ultimately, X is a reflection of the internet. And that means you will see the full spectrum of human thought. And sometimes the most outrageous takes will catch fire. Having said all of this, there can still be cases of narratives being boosted but the origin of the initial post is almost always domestic and we have hardened our systems in the last 3 months to prevent this.

Yesterday, we made GPT-5.6 Sol Ultra generally available. Today, we're sharing that it produced a proof of the 50-year-old Cycle Double Cover Conjecture using 64 subagents in just under one hour. We're sharing the prompt and proof below. We're excited to see what you all do with Ultra!

this is a fun format! A lot harder than it looks on both the cooking and interviewing and responses side. Might unironically be a good AGI test for humanoid robots - entertain guests, predict the future, while cooking a meal. Specialization is for insects

Progress on NEO’s AI has been really fast of late. Here are some early clips of a generalist model we’re developing at @1x_tech. The following clips are 100% autonomous, running on a single set of neural network weights. First, a quiet little robot that picks up leaves and puts them in a bag.