Particle is public: an inference layer for open weight models. The site says it is fast, low cost and reliable, and that developers use the API for apps and agents. The homepage lists three models: DeepSeek V4.1 Flash, GLM 5.3 Flash and Particle-1.
The about page is dated october 26 2026 and places the company in San Francisco. It says the mission is to make intelligence as accessible and abundant as electricity, and that the first step is cutting the cost of intelligence for developers. The site also says zero data retention.
who posted it
@Suhail lists himself as founder of Particle, and previously CEO and founder of Mixpanel (@mixpanel). On october 27 2026 he wrote: "New quest. New company. New model. It's time to ship this week."
Frontrun posted the site the next day. Our post on X. The about page and the two posts do not say how long the company was quiet before the site went up.
the same week in inference
General Compute announced a $100M Series A on october 27 for an inference cloud on alternative chips. Flapping Airplanes posted a $1B Series A on october 21, for new GPU primitives. Particle is the one that put a developer API on the public web. More of the category is on AI startups and infrastructure startups. Companies still quiet, with no site yet, are on founders building in stealth.
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