DeepSeek V4 Flash 0731 and GPT-5.6 Luna: The Routing Table Just Moved
The most useful model news of the week is not a leaderboard victory. It is a routing event. On July 30, OpenAI cut GPT-5.6 Luna to \$0.20 per millio…
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Model Selection for Weibull Series Systems: When Simpler Models Suffice
When can you safely use a simpler model for a series system? I ran extensive simulation studies with likelihood ratio tests to get a quantitative an…