DeepSeek cuts V4-Flash API prices Sept 10, inputs back to pre-hike levels as V4.1 test model appears
机器之心 · wechat · 2026-09-09
DeepSeek announced V4-Flash API price cuts effective Sept 10 at 12:00 Beijing time: off-peak rates of ¥0.02/M tokens (cache hit), ¥1 (cache miss), and ¥4 (output), with peak hours (weekdays 9:00–12:00, 14:00–18:00) at 2x. V4-Pro pricing unchanged.
- Compared to pre-hike prices (Aug 17: 0.02/1/2), inputs return to original levels while output remains 2x; at peak hours it's 2x/2x/4x vs the old flat rate.
- Real-world impact depends on cache hit rate, input/output ratio, and off-peak flexibility — long-context, fixed-system-prompt, and agent-loop workloads benefit most.
- Separately, DeepSeek released a test model deepseek-v4.1-flash-expires-on-0910 at the same billing, native multimodal, faster inference, and lower costs via architecture upgrades — it auto-expires Sept 10, the same day pricing takes effect, hinting at an imminent V4.1 release.
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