by ExtropicUS
First thermodynamic chip with 269k pbits, proving thermal noise harness at scale. Early adopters got XTR-0 systems for research and workload development.
Shipped dozens of XTR-0 systems to early adopters in 2025. Demonstrated 269,000+ pbits in silicon.
Updated Q3 2025Checked 10 Oct0 updates this week
CMOS transistors oscillate from thermal energy. Instead of filtering noise, Extropic reads and steers oscillations into programmable distributions.
Pbits convert thermal randomness to samples. Groups interconnect to form Gibbs samplers without CPU overhead.
| Spec | X0 |
|---|---|
| Probabilistic bits | 269,000+R (reported) |
| Early systems shipped | DozensE (estimated) |
R reported by the company · E our estimate
Extropic
Thermodynamic computing, probabilistic bits, Z1 chip
Extropic builds thermodynamic sampling units—specialized processors that use the thermal noise of ordinary transistors to sample directly from probability distributions. The company aims to deliver orders-of-magnitude energy efficiency gains for AI workloads compared to GPUs.
