Recent surges in OpenRouter token volume stem primarily from rapid adoption of low-cost Chinese open-weight large language models and a new anonymous entrant, Space Bunny Alpha, which launched September 23 and quickly captured double-digit trillions in weekly usage through strong coding and inference performance. Programming workloads now account for roughly 59% of platform traffic, amplifying demand for efficient Flash variants from DeepSeek, Zhipu GLM, and Xiaomi MiMo that deliver competitive capabilities at fractions of proprietary pricing. This dynamic, combined with sustained 10-13% week-over-week platform growth and continued open-source iteration, underpins trader consensus clustering tightly in the 155-165T range for the week of September 28. Upcoming model releases or pricing shifts could still swing final totals.