The speaker says models began handling long-running tasks around December and describes Opus 5.5 as capable of doing a large amount of work.

“I think basically if you think of December as the like Opus four five moment.”

“where the models really started to take on these long running tasks to today we're back to Opus, but Opus 5.5. I mean, that's just a magnificent model that can really do a ton of work.”