According to CoinMeta, Polymarket announced on November 13 the launch of a sandbox test for NEX, which is a trading system rewritten using Rust. The engineering team stated that it can process 100,000 instructions per second and plans to conduct a conditional launch in mid-December. Polymarket's Vice President of Engineering, Josh Stevens, mentioned that NEX has been running in parallel with the existing exchanges over the past week to allow engineers to compare response times, load stability, and matching accuracy. The existing central limit order book (CLOB) can process 10,000 instructions under stable load, while NEX supports 100,000 and 150,000 instructions. With further optimization, Stevens expects the system to reach 200,000 instructions per second, and potentially 250,000 instructions in a short period. The startup time for NEX has been reduced from five minutes to 15 seconds. Stevens also noted that NEX is designed to eliminate competitive conditions and inconsistent behaviors found in the old system.