DeepSeek

DeepSeek: DeepSeek V4.1 Flash 1017

deepseek/deepseek-v4.1-flash-1017

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

393,216 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	0.00000015	$0.150
completion	0.0000006	$0.600
input_cache_read	0.000000003	$0.003
overrides	[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]	—

Supported parameters(22)

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_completion_tokensmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

OpenRouter page Hugging Face

Rounds

34 answersin this database. A round opens every model's answer to the same prompt.

Oct 27, 2026CodingThe spec that can't be built30badin a video round answer
Oct 26, 2026CodingTablecloth Yank Trick30badin a video round answer
Oct 26, 2026CodingStadium Exit Gate Bottleneck30badin a video round answer
Oct 26, 2026CodingDropped Garden Hose Whip70goodin a video round answer
Oct 26, 2026CodingTablecloth Yank Trickround answer
Oct 19, 2026CodingNeon Unicorn Frappuccino10very badin a video round answer
Oct 19, 2026CodingBird Breakdance Animation10very badin a video round answer
Oct 19, 2026CodingUmbrella In High Wind85very goodin a video round answer
Oct 19, 2026CodingEscalator Reversal Disaster70goodin a video round answer
Oct 19, 2026CodingSpinning cat memein a video round answer
Oct 18, 2026Model FingerprintsPick Ten Random Thingsin a video round answer
Oct 18, 2026Model FingerprintsName Ten Story Charactersin a video round answer
Oct 18, 2026Model FingerprintsTen Canvas Animation Ideasin a video round answer
Oct 17, 2026Vision & PerceptionCount the Park Catsround answer
Oct 17, 2026Vision & PerceptionCount the Park Catsin a video round answer
Oct 17, 2026KnowledgeName 100 Womenin a video round answer
Oct 17, 2026Psychology & Business AcumenThe email you don't want to sendin a video round answer
Oct 17, 2026Psychology & Business AcumenThe Labubu PR nightmarein a video round answer
Oct 17, 2026MedicineThe Worried Patient Replyin a video round answer
Oct 17, 2026MedicineIt's Never Lupusin a video round answer
Oct 17, 2026Speed & AccuracyVendor booth lead cleanupin a video round answer
Oct 17, 2026Speed & AccuracyTrade show support repliesin a video round answer
Oct 17, 2026Speed & AccuracyHomeowner help center batchin a video round answer
Oct 17, 2026Speed & AccuracyBeach drone action registerin a video round answer
Oct 17, 2026Vision & PerceptionThe scroll testin a video round answer
Oct 17, 2026Vision & PerceptionCar Identificationin a video round answer
Oct 17, 2026CodingTwo kilobytes95excellentin a video round answer
Oct 17, 2026CodingThe same soldierin a video round answer
Oct 17, 2026CodingShip it in 1998in a video round answer
Oct 17, 2026CodingPage two, againin a video round answer
Oct 17, 2026CodingLast one standingin a video round answer
Oct 17, 2026CodingDrop the slinky95excellentin a video round answer
Oct 17, 2026CodingThe Cybertruck rally10very badin a video round answer
Oct 17, 2026CodingA hundred thousand of themin a video round answer