AlphaSignal @AlphaSignalAI · 03 Sep 2026
Your 5-minute cache is already dead when you sit down. API models don't keep the thread. Every turn resends the whole history. A one-token tool result still pays that whole history. On Opus 5, 1 million uncached tokens are $5. A hit is $0.50. Cache-hit discounts are https://t.co/Ci1wzpoev1
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