DeepSeek

DeepSeek V4.1 Flash

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the cost-efficient tier of the V4.1 family. DeepSeek reports that it exceeds V4 Pro on performance, speed, and task...

deepseek-v4.1-flash

Pricing

~99.7%

Input: $0.000144 / 1,000,000 tokens
Output: $0.002736 / 1,000,000 tokens
Cache read: $0.000022 / 1,000,000 tokens
Cache write: $0.000144 / 1,000,000 tokens

How pricing works

Discount history

99.7%Nov 8, 03:56 AM UTC

Nov 7, 11:57 PMNov 8, 03:56 AM UTC

Model details

Input: text, image
Output: text
Context window: 1,048,576 tokens
Maximum output: 384,000 tokens
Availability: $6Uncapped capacity
Updated: 11/8/2026, 3:58:06 AM UTC

Capacity is reserved when your request is accepted.

Capabilities

ChatStreamingVisionTool callingReasoningJSON mode

Supported parameters

frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatstoptemperaturetool_choicetoolstop_logprobstop_p