DeepSeek-V4-Flash-0731 goes live on DeepSeek API

Per DeepSeek's API changelog, V4-Flash-0731 scores 82.7 on Terminal Bench 2.1, 70.3 on Toolathlon verified, and 25.1 on Automation Bench (Public). It keeps V4-Flash-Preview's architecture and size and was only re-post-trained; the V4-Pro API follows soon. A developer reports building a working game for $0.07 with it.