DeepSeek plans to officially release V4.1 Flash around September 10, 2026 (Beijing time).
According to DeepSeek, extensive internal and external testing shows that V4.1 Flash has surpassed V4 Pro across all key metrics, including overall performance, operating cost, response speed, and task completion time.
Following the official launch of V4.1 Flash—and until V4.1 Pro becomes available—all requests sent to the Pro model will be automatically routed to V4.1 Flash and billed at the lower Flash pricing.
New DeepSeek V4.1 Flash pricing
The new pricing takes effect at 04:00 UTC on September 10, 2026.
| Usage | Off-peak price | Peak-hour price |
|---|---|---|
| 1M input tokens — cache hit | $0.003 | $0.006 |
| 1M input tokens — cache miss | $0.15 | $0.30 |
| 1M output tokens | $0.60 | $1.20 |
Peak hours in UTC: 01:00-04:00 and 06:00-10:00, Monday through Friday. All other times are billed at off-peak rates.
V4.1 Flash promises a stronger balance between quality, speed, and price, making it an interesting option for agents, development workflows, automation, and high-volume tasks.
You can try DeepSeek V4.1 Flash at opencheese.dev right now!