Before it
K2 had reached a trillion parameters, text only.
The problem
Open models still trailed closed ones on multimodal and agentic work at the largest scale.
What it introduced
A multi-trillion-parameter open multimodal agentic model.
Why it matters
Open weights at a scale previously seen only in closed labs, with multimodality included.
What modern models inherit
The largest openly available models being multimodal and agentic.
What came next
Continued escalation at the open frontier.