DeepSeek V4 Flash 0731: 82.7 on Terminal Bench, at a Third of Pro's Output Price
DeepSeek's re-post-trained DeepSeek-V4-Flash-0731 scores 82.7 on Terminal Bench 2.1 — reportedly beating its own near-6x larger V4-Pro-Preview — and now speaks the Responses API natively for Codex-style harnesses. What actually shipped, how to split high vs max effort, and the verbosity caveat that quietly resets the per-task math.