Models / DeepSeek
DeepSeek V4.1 Flash 1017
by DeepSeek ·
deepseek/deepseek-v4.1-flash-1017DeepSeek 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...
reasoningtool-usevisionreleased 2026-10-17
Legal score · raw
-
not yet benchmarked
Context
1.05M
max output 393K
Input
$0.19
per 1M tokens
Output
$0.75
per 1M tokens
Suite cost
-
no run recorded
Prompt caching
Grounded answers re-send the same retrieved authority every turn, so a cached read is what a long matter actually costs. Prices are per 1M tokens, from the provider’s own catalog.
Cache read
$0.0037
50x cheaper than uncached
Uncached input
$0.19
per 1M tokens
Capabilities
Modalities
in textimage
out text
Request parameters it accepts
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_completion_tokensmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
Benchmark results
This model has not been run through the suite yet. See Humanity's Last Lawsuit for the benchmark models are ranked on.