Moonshot AI unveils Kimi K3.1 Pro and Highspeed variant

Moonshot AI lists a 1 million-token context window and 2.8 trillion total parameters for Pro and describes Highspeed as two to three times faster. Arena places Pro eighth in Code Arena: WebDev. According to Moonshot, as reported by SiliconANGLE, its engineers removed cybersecurity-related information from Pro’s post-training data to address safety risks. Moonshot says both versions are live on its services and API, with Pro’s weights planned for release by Nov. 4, 2026.