DeepSeek-V4-Flash Update

2026-07-31 | original

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Why This Matters

The release of DeepSeek-V4-Flash API marks a significant advancement in AI capabilities, offering enhanced performance across various benchmarks and supporting integration via multiple interfaces. The transition to new model names and the discontinuation of legacy models highlight a strategic upgrade aimed at improving AI efficiency and developer flexibility, with a clear timeline for phased deprecation.

Key Takeaways

DeepSeek-V4-Flash API is now in public beta, supporting OpenAI and Anthropic interfaces.
Legacy models deepseek-chat and deepseek-reasoner will be discontinued in July 2026, replaced by upgraded V3.2 versions.
New models offer improved benchmark scores and are accessible via existing endpoints with minimal changes.

Change Log

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.

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

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Explore topics: deepseek-v4-flash openai chatcompletions anthropic deepseek-api dsbench