When we reset the lineup, the Xenon family went with it. That did not sit right with us, and judging by the messages we got, it did not sit right with you either. So we went back to work, and today Xenon 9 returns to the top of the picker.
What is new
Everything under the hood is new. Xenon 9 reasons deeper, answers faster, and holds dramatically more of your conversation in view at once. Long chats no longer lose the thread, and hard problems get the patience they deserve. The personality you remember is intact: the same directives, the same judgment, the same feel, now carried by a much stronger core.
The family
- Xenon 9 is the flagship. Full general use, deep reasoning, the one you pick when the answer matters.
- Xenon 9 Code is the engineer. Agentic coding, refactors, reviews, and long tool-driven runs.
- Xenon 9s is the quick one. Small, fast, and ideal for everyday questions and rapid loops.
Where it sits
Xenon 9 takes the top of the model picker. CORe EX2 remains right below it as the fastest CORe model available, and the EX1 line rounds out the lineup. Everything else about the platform, including streaming, thinking summaries, tools, and the API, works exactly as it did.
Welcome back, Xenon.