调用 deepseek-flash 的用户现在将收到来自更新后的后端模型（DeepSeek-V4.1-Flash-1017）的响应，具备更强的能力，但 API 调用方式保持不变。
证据
−The legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp are still accepted, but the corresponding models have been retired, their requests are served by the DeepSeek-V4.1-Flash model and billed at the Flash price.
+It is now served by DeepSeek-V4.1-Flash-1017, and the calling method remains unchanged. The legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp are still accepted, but the corresponding models have been retired; their requests are served by DeepSeek-V4.1-Flash-1017 and billed at the Flash price.
−The expense = number of tokens × price. The corresponding fees will be directly deducted from your topped-up balance or granted balance, with a preference for using the granted balance first when both balances are available.
+For model usage, the expense = number of tokens × price. Search and Fetch are charged per successful request at the rates above. The corresponding fees will be directly deducted from your topped-up balance or granted balance, with a preference for using the granted balance first when both balances are available.
+Search & Fetch Pricing
Search and Fetch are standalone APIs billed per request.
API
Unit
Price
Search
Per 1,000 successful requests
$0.75
Fetch
Per 1,000 successful requests
$0.75
+Use deepseek-flash as the model name. The legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp are still accepted, but the corresponding models have been retired, their requests are served by the DeepSeek-V4.1-Flash model and billed at the Flash price.
开发者现在可以使用新的 deepseek-v4-flash-vision-exp 模型处理图像和文本，实现多模态 AI 能力。
证据
+The newly released deepseek-v4-flash-vision-exp is an experimental model that additionally accepts image input; set the model name to deepseek-v4-flash-vision-exp to use it, and see Vision for details.
−We plan to raise the overall pricing for DeepSeek API services in the near future, with a significant increase expected. Please plan your usage accordingly. The specific pricing plan will be subject to official notice.
+DeepSeek API pricing will be updated to peak / off-peak billing, with off-peak rates at half the peak rates. Peak hours are 01:00 - 04:00 and 06:00 - 10:00 UTC (all other hours are off-peak). The new prices take effect at 16:00 UTC on August 16, 2026
−The Responses API currently only supports the deepseek-v4-flash model, and does not yet support the deepseek-v4-pro model. We will add support for the deepseek-v4-pro model in early August 2026.
−The deepseek-v4-flash model has been updated to DeepSeek-V4-Flash-0731. The calling method remains unchanged — simply use deepseek-v4-flash to access the latest version.
+The deepseek-v4-flash model has been updated to DeepSeek-V4-Flash-0731, and the deepseek-v4-pro model has been updated to DeepSeek-V4-Pro-0813. The calling method remains unchanged — simply use deepseek-v4-flash or deepseek-v4-pro to access the latest version.
API 定价在高峰时段（北京时间 9:00–12:00 和 14:00–18:00，UTC+8）每天增加 2 倍。影响所有计费项目。生效日期待官方公告。
证据
+(2) The DeepSeek API service will soon adopt a peak/off-peak pricing policy. During peak hours, prices will be 2x the regular prices, applicable to all billing items. The effective date will be subject to the official announcement. [Peak hours: 9:00–12:00 and 14:00–18:00 (Beijing Time, UTC+8) daily]
使用 deepseek-v4-flash 的开发者将自动获得最新模型版本 (0731)，无需更改 API 调用或代码。
证据
−model
+model(1)
(1) The deepseek-v4-flash model has been updated to DeepSeek-V4-Flash-0731. The calling method remains unchanged — simply use deepseek-v4-flash to access the latest version.
使用这些旧版模型名称的 API 用户必须在弃用日期前迁移至 deepseek-v4-flash，以避免服务中断。
证据
−deepseek-chat (to be deprecated on 2026/07/24)
deepseek-reasoner (to be deprecated on 2026/07/24)
* The model names deepseek-chat and deepseek-reasoner will be deprecated on 2026/07/24 15:59 UTC. For compatibility, they correspond to the non-thinking mode and thinking mode of deepseek-v4-flash, respectively.