6 of 9 published DeepSeek billing plugins bill the weekend at double — the harness that measures it, runnable in 30s. Dated peak/off-peak boundary vectors plus a reference implementation in Python and JS. Peak: Beijing 09:00-12:00 / 14:00-18:00 Mon-Fri = 01:00-04:00 / 06:00-10:00 UTC; weekends off-peak all day since 2026-08-23. CC0.
timezone utc billing cost-optimization weekday conformance-tests test-vectors pricing-data deepseek llm-pricing llm-cost deepseek-api api-pricing time-of-use deepseek-v4 token-costs beijing-time off-peak peak-off-peak weekend-pricing
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Aug 24, 2026 - JavaScript