DeepSeek V4 Flash Tested: Choosing the Wrong Harness Burns Millions of Tokens
teortaxesTex · x · 2026-08-03
Developers have found that the DeepSeek V4 Flash model is highly sensitive to the testing harness. If an incompatible toolchain is used, the model's performance drops significantly, even frequently burning over a million tokens. However, with the right harness, the model delivers excellent cost-effectiveness, with some placing its capabilities around the GPT-5.6 tier.
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