DeepSeek Flash Hits 80% of GPT 5.6 Luna Quality at 1/6 the Cost

pbaylies · x · 2026-08-07

A developer conducted a deep dive comparing DeepSeek-V4 Flash 0731 and GPT 5.6 Luna on software engineering tasks. Data shows DeepSeek Flash costs only 1/6th of Luna per task while delivering 80% of the quality, offering insane value for money. Furthermore, a routing or cascading strategy combining both models beats using Luna alone on both cost and quality.

Related event: DeepSeek-V4 Flash Matches GPT-5.6 Luna at 1/6 Cost in SWE Benchmark(12 posts)→

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