The article discusses the release of DeepSeek V4-Flash 0731, a post-training model update that has improved its performance and is now on the Pareto frontier with GPT-5.6 Luna, with a cost per task of $0.28 and 98% cache-hit discount. The update is available as open weights and has been integrated into existing coding stacks, highlighting the importance of harness choices in engineering workflows. AI summary
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