DeepSeek V4 Flash GA ties Sonnet 5, Grok 4.5 on DeepSWE

DeepSeek's official X account claims V4 Flash GA ranks alongside Sonnet 5 and Grok 4.5 atop the DeepSWE leaderboard (deepswe.datacurve.ai). The claim is not yet verified by DeepSWE itself.
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