DeepSeek V4 Flash official release: big agent gains, cost advantage
数字生命卡兹克 · wechat · 2026-07-31
WeChat article by Kazike shares experience with DeepSeek V4 Flash official release. Model structure unchanged but post-training greatly improved, with scores rising on TerminalBench2.1, DeepSWE, DSBench-FullStack, and beating V4 Pro Preview on all nine agent tests. Native Responses API support. Author notes gap with top models like GPT-5.6 Sol in hardest coding tasks, but Flash is extremely cost-effective for high-volume routine tasks. His AIHOT consumes 1000 RMB/month in API costs; top models would cost 10x more.
Related event: DeepSeek V4-Flash: Agent Leap, Open Source, Ultra-Low Price(100 posts)→
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