DeepSeek-V4-Flash Official API Released with Major Agent Upgrades
zainhas · x · 2026-07-31
DeepSeek's official changelog confirms that the DeepSeek-V4-Flash official API is now in public beta. The model architecture remains identical to the Preview version, but it has undergone new post-training and natively supports the Responses API format and Codex adaptation.
The official release highlights a massive enhancement in Agent capabilities, significantly outperforming V4-Pro-Preview across multiple benchmarks:
- Terminal Bench 2.1: 82.7
- NL2Repo: 54.2
- Cybergym: 76.7
- DeepSWE: 54.4
- Toolathlon verified: 70.3
- Agent Last Exam: 25.2
- Automation Bench (Public): 25.1
- DSBench-FullStack: 68.7
- DSBench-Hard: 59.6
Only the Flash API interface has been upgraded this time; the V4-Pro API and APP/WEB models remain unchanged, with the official V4-Pro release coming soon.
Related event: DeepSeek V4-Flash: Agent Leap, Open Source, Ultra-Low Price(100 posts)→
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