DeepSeek-V4-Flash-0731 is the official stable release of DeepSeek-V4-Flash launched by DeepSeek on July 31, 2026, replacing the former preview version. The model ID deepseek-v4-flash remains unchanged, allowing seamless API migration without modifying endpoint addresses. It retains the identical MoE architecture and parameter scale as the preview edition; all performance gains stem from comprehensive post-training alignment, drastically boosting agent workflows, code tool calling and multi-step automation tasks. It outperforms the preview version of DeepSeek-V4-Pro and competes with top-tier closed-source LLMs globally.