Mixpanel founder Suhail launches Particle with a model that claims 45% token savings

Particle-1, a post-trained version of DeepSeek V4.1 Flash, says it matches accuracy while using roughly 45% fewer output tokens Suhail, the founder and former CEO of Mixpanel, has a new company. It is called Particle, and its pitch fits in one sentence: same answers, fewer words. On October 28, 2026, Suhail announced the San Francisco-based AI startup alongside its first model, Particle-1. The company says the model uses about 45% fewer output tokens on average during evaluations while keeping its accuracy intact.