DeepSeek

DeepSeek: DeepSeek V4.1 Flash 1017 (batch)

deepseek/deepseek-v4.1-flash-1017:batch

canonical: deepseek/deepseek-v4.1-flash-20261017

Descriptionfrom OpenRouter

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the deepseek-flash API model name. V4.1 Flash is a sparse mixture-of-experts model...

Context length

1,048,576 tok

Max completion

384,000 tok

Knowledge cutoff

—

Expires

—

Added to OpenRouter

10/17/2026

Cache last refreshed

11/12/2026

Primary modality

text+image->text

Source

OpenRouter

Input modalities

textimage

Output modalities

text

Pricing

Field	Per token (USD)	Per million
prompt	0.00000005	$0.050
completion	0.00000015	$0.150
input_cache_read	0.000000004	$0.004

Supported parameters(11)

frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortseedstoptemperaturetop_ktop_p

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