DeepSeek launches v4.1 flash, postpones v4 Pro discontinuation

DeepSeek released its V4.1 Flash model on September 10, 2026 Beijing Time and postponed the discontinuation of its V4 Pro service to 12:00 Beijing Time on September 14, 2026, after which all V4 Pro requests will route to V4.1 Flash and be billed at Flash's price. DeepSeek said V4.1 Flash surpassed V4 Pro across all key metrics, including performance, cost, speed, and task completion time, while V4 Pro's price remains unchanged during its remaining service period. V4.1 Flash pricing took effect at 4:00 UTC on September 10, 2026, with peak hours set at 1:00–4:00 AM and 6:00–10:00 AM UTC Monday through Friday.

DeepSeek has officially released the V4.1 Flash model on September 10, 2026 Beijing Time . In the meanwhile, we plan to postpone the discontinuation of the V4 Pro service to 12:00 Beijing Time on September 14, 2026. At that time, all requests to the Pro model will be routed to V4.1 Flash and billed at Flash's price. After extensive internal and external testing, V4.1 Flash has comprehensively surpassed V4 Pro across all key metrics, including performance, cost, speed, and task completion time. If you encounter any issues during your comparative testing between V4 Pro and V4.1 Flash, please do not hesitate to reach out to us with your feedback. The price of V4 Pro remains unchanged during the service period. The price of V4.1 Flash will take effect at 4:00 UTC, September 10, 2026. Peak hours in UTC : 1:00–4:00 AM and 6:00–10:00 AM, Monday to Friday. All other hours are off-peak If you continue to use our services after the billing adjustment, you will be deemed to have accepted the adjusted billing terms. If you do not agree, you may choose to cancel your service and apply for a refund. Should you have any questions or require further information, please do not hesitate to contact us. Comments URL: https://news.ycombinator.com/item?id=49638687 https://news.ycombinator.com/item?id=49638687 Points: 1 Comments: 0