Azure OpenAI Hidden Costs: Why Your Invoice Lands 40% Higher Than the Calculator Predicted

Token pricing is identical between Azure OpenAI and the direct OpenAI API — GPT-4o costs $2.50/$10.00 per million tokens on both platforms. But that first enterprise invoice on Azure? It arrives 15-40% higher, thanks to fine-tune hosting fees ($1.70-$3.00/hour, even when idle), Log Analytics ingestion (~$2.30/GB), data egress ($0.087/GB after 100GB free), and mandatory support

GPT-5.6 Luna Blended Cost: Why the 80% Price Cut Means Something Different for Every Workload

Everyone’s comparing GPT-5.6 Luna’s new $0.20 input price to Claude Sonnet 5’s $2/M introductory rate and calling it a clear win for OpenAI. That comparison is broken: it ignores that the GPT-5.6 Luna blended cost depends entirely on your input:output ratio and whether the API can cache your prompts. At 80/20 input-heavy workloads, Luna runs