Date: 2026-07-31 ​

DeepSeek-V4-Flash Update ​

The official release of the DeepSeek-V4-Flash API is now in public beta. The API calling method remains unchanged — simply set the model name to deepseek-v4-flash to use the latest version.

Significantly enhanced agent capabilities, with benchmark results far exceeding V4-Pro-Preview:

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

Note 1: For the Code Agent tasks in the public benchmark sets, the official DeepSeek-V4-Flash was tested using the DeepSeek Harness minimal mode (to be released soon) as the framework, with the max effort level, topp=0.95, and temperature=1.0

Note 2: DSBench-FullStack is an internal full-stack development test set, and DSBench-Hard is an internal Coding Agent hard-problem test set

The official V4-Flash natively supports the Responses API format and is specifically adapted for…