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Public story · 2026-08-04 · high
At Q3 it edges out Qwen3.6-27B on big coding jobs; drop to Q2 and Qwen wins, per a 189-upvote r/LocalLLaMA thread.
Why now: The thread is framed as reactions after the first weekend of hands-on use with the 0731 build, making this the earliest wide read on how it holds up quantized.
V4-Flash-0731 loses far more accuracy under quantization than DeepSeek's preview build, per a 189-upvote r/LocalLLaMA thread.
That matters because the model's standing against Qwen3.6-27B flips depending on the quant level someone actually runs.
Posters in the thread describe Q2 and Q3 builds as functionally different models, with reasoning traces shaped unlike the full-precision version's own.
The thresholds are specific. At Q3, V4-Flash-0731 finally out-codes Qwen3.6-27B on large repositories and in harnesses running system prompts past 30,000 tokens. Drop to Q2, and Qwen3.6-27B at Q8 wins outright.
Unsloth's KL-divergence charts posted in the thread back up the complaint. The preview build stayed close to its full-precision outputs even at aggressive quant levels. The 0731 release shows poor KL-divergence even at IQ4_XS, a milder quant level than the Q2 and Q3 builds drawing complaints.
The thread doesn't say whether DeepSeek changed its training process between the preview and 0731, only that the quantization behavior changed.
Each link below shares sources, entities, or timing with this story.
DeepSeek V4 uses Huawei / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (DeepSeek V4 uses Huawei); both cover Flash, LocalLLaMA; reported by the same outlet (reddit.com).
Linked by a graph relationship (DeepSeek V4 uses Huawei); both cover Flash, LocalLLaMA; reported by the same outlet (reddit.com).
DeepSeek released DeepSeek V4 / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (DeepSeek released DeepSeek V4); both cover Flash, LocalLLaMA; reported by the same outlet (reddit.com).
DeepSeek released DeepSeek V4 / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (DeepSeek released DeepSeek V4); both cover Flash, LocalLLaMA; overlapping topics (beat, deepseek).
Kimi K3 competes with DeepSeek V4 / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (Kimi K3 competes with DeepSeek V4); both cover LocalLLaMA, Qwen3; reported by the same outlet (reddit.com).
Shared entities / Same source domain / Shared topic / Earlier coverage / Tension
Both cover LocalLLaMA, Qwen3; reported by the same outlet (reddit.com); overlapping topics (beat, qwen3).
Google released Flash / Shared entities / Same source domain / Earlier coverage
Linked by a graph relationship (Google released Flash); both cover LocalLLaMA, Qwen3; reported by the same outlet (reddit.com).
DeepSeek released DeepSeek V4 / Shared entities / Earlier coverage / Tension
Linked by a graph relationship (DeepSeek released DeepSeek V4); both cover DeepSeek V4, Flash; earlier DeepSeek V4 coverage from 2026-06-15.