DeepSeek V4.1 Flash

DeepSeek · released 10 Sept 2026

Input$0.3per 1M tokens

Output$1.2per 1M tokens

Context1,049Ktokens

WeightsOpen

context on a 1K–2M scale

About

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

Details

Lab: DeepSeekopenrouter.ai · 3 Oct 2026
Context: 1,049Kopenrouter.ai · 3 Oct 2026
Input price: $0.3 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $1.2 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 943,718 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, imageopenrouter.ai · 3 Oct 2026
Open weights: Yesopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/deepseek/deepseek-v4.1-flash· checked 3 Oct 2026