Models / DeepSeek
DeepSeek V4.1 Flash
by DeepSeek ·
deepseek/deepseek-v4.1-flashDeepSeek 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...
reasoningtool-usevisionreleased 2026-09-10
Legal score · raw
-
not yet benchmarked
Context
1.05M
max output 944K
Input
$0.02
per 1M tokens
Output
$1.25
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
$0.02
1.3x cheaper than uncached
Uncached input
$0.02
per 1M tokens
Capabilities
Modalities
in textimage
out text
Request parameters it accepts
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_atop_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.