DeepSeek has launched the official public beta of the DeepSeek-V4-Flash API, featuring significantly enhanced agent capabilities compared to the V4-Pro-Preview. The update involves re-post-training the model while maintaining its original architecture and size.
- 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
The API natively supports the Responses API format and is specifically adapted for Codex, with benchmark results tested using the DeepSeek Harness minimal mode framework.