DeepSeek
·Released on Sep 10, 2026

DeepSeek V4.1 Flash API Benchmarks, Pricing & Provider Data

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DeepSeek V4.1 Flash benchmark, API pricing, and provider data cover undefined API provider} other undefined API providers}}, with prices starting at $0.036/request. DeepSeek V4.1 Flash free API options are available from undefined provider} other undefined providers}}.

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the cost-efficient tier of the V4.1 family. DeepSeek reports that it exceeds V4 Pro on performance, speed, and task...

Cost
#55of 186
$0.036/ 1M · 8:1 in:out
$0.0058 in · $0.031 out

Category Performance

Observed-capability estimates with uncertainty reported separately from independent benchmark families.

Coverage
2 / 8
Methodology
V3.0
Category PerformanceObserved-capability estimates with uncertainty reported separately from independent benchmark families.Agents-Coding57.6Reasoning56.9Knowledge-Math-Multilingual-Multimodal-Instruction following-
#1Coding57.6Provisional1/4 Measured dimensions
80% interval: 41.673.6
code generation57.6
scicode · scicode
repository engineeringPrior only
debugging testingPrior only
tooling qualityPrior only
#2Reasoning56.9Provisional1/4 Measured dimensions
80% interval: 40.972.9
abstract logicPrior only
scientific causal56.9
hle · hle
multistep constraintsPrior only
evidence verificationPrior only
No data:AgentsKnowledgeMathMultilingualMultimodalInstruction following

Specifications

Input and output token limits for this model, plus how it ranks on long-context understanding.

INPUT
1.0Mtokens
1.3K pages of text
OUTPUT
384Ktokens
8K128K1M4M
1.0M

Features

Technical Details

Input
Output
Released
Sep 2026
Tokenizer
DeepSeek
Architecture
text+image->text
Moderated
No
Supported parameters
frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p

Rankings

Excels at

Detailed scores

Updated: Sep 11, 2026

Speed & latency

undefined metric} other undefined metrics}}

Output speed267.1 tok/s#9 / 81Time to first token0.90 s#25 / 81
Output speed
LMSpeed rank#9
Score267.1 tok/s
UpdatedSep 11, 2026
Confidence4
Time to first token
LMSpeed rank#25
Score0.90 s
UpdatedSep 11, 2026
Confidence4

Pricing

undefined metric} other undefined metrics}}

Input price$0.300/M#55 / 186Output price$1.20/M#50 / 186
Input price
LMSpeed rank#55
Score$0.300/M
UpdatedSep 11, 2026
Confidence4
Output price
LMSpeed rank#50
Score$1.20/M
UpdatedSep 11, 2026
Confidence4

Agents

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Planning & decompositionPrior only
Tool usePrior only
Environment & long-horizon executionPrior only
Recovery & completion reliabilityPrior only

Coding

V3.0

undefined metric} other undefined metrics}} · Provisional

Score57.680% interval41.6–73.61/4 Measured dimensionsSciCode51.9%#26 / 89
Dimensions and evidence
Code generation57.6
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
scicode · scicode · z 0.85 · q 1.00
Repository engineeringPrior only
Debugging & testingPrior only
Tool-assisted development & qualityPrior only
SciCodeV3 evidence
LMSpeed rank#26
Score51.9%
UpdatedSep 11, 2026
Confidence4

Reasoning

V3.0

undefined metric} other undefined metrics}} · Provisional

Score56.980% interval40.9–72.91/4 Measured dimensionsHLE39.2%#32 / 216
Dimensions and evidence
Abstract logicPrior only
Scientific & causal reasoning56.9
undefined family} other undefined families}} · undefined metric} other undefined metrics}}
hle · hle · z 0.84 · q 1.00
Multi-step constraintsPrior only
Evidence integration & verificationPrior only
HLEV3 evidence
LMSpeed rank#32
Score39.2%
UpdatedSep 11, 2026
Confidence4

Knowledge

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Broad knowledgePrior only
Professional knowledgePrior only
FactualityPrior only
Retrieval & open-book usePrior only

Math

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Foundational mathPrior only
Competition mathPrior only
Advanced proofsPrior only
Applied & tool-assisted mathPrior only

Multilingual

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Cross-language understandingPrior only
Multilingual generationPrior only
Reasoning transferPrior only
Low-resource robustnessPrior only

Multimodal

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Perception & OCRPrior only
Document & spatial understandingPrior only
Visual reasoningPrior only
Video & grounded actionPrior only

Instruction following

V3.0

undefined metric} other undefined metrics}} · No data

No data80% interval30.8–69.20/4 Measured dimensions
Dimensions and evidence
Constraint followingPrior only
Structured outputPrior only
Novel-instruction generalizationPrior only
Multi-turn & long instructionsPrior only

Pricing Comparison

Compare DeepSeek V4.1 Flash API pricing across 48 providers. Prices range from $0.036/request to $97.50/M. VSLLM offers the lowest rate at $0.036/request. 3 providers offer free API credits or a free tier.

ProviderHealthModel VariantGroupInput ($/M)Output ($/M)Speed (t/s)First tokenAudit
L1
100%
deepseek-v4.1-flash
deepseek
$0.500/M
$2.00/M
L1
100%
deepseek-v4.1-flash
国模折扣
-49%$0.154/M
Cache read$0.0031/M
-49%$0.614/M
L1
100%
deepseek-v4.1-flash
default
$0.036/request
-
L1
100%
deepseek-v4.1-flash
default
-54%$0.137/M
Cache read$0.0027/M
-54%$0.548/M
L1
100%
deepseek-v4.1-flash
default
$2.00/M
Cache read$0.040/M
$8.00/M
L1
100%
[hm]q|满血/deepseek-v4.1-flash
default
$15.00/request
-
L1
100%
deepseek-v4.1-flash
deepseek-official
$71.25/M
$71.25/M
L1
100%
[次]deepseek-v4.1-flash
default
$0.080/request
-
L1
99%
deepseek-v4.1-flash
default
-69%$0.094/M
Cache read$0.019/M
-84%$0.187/M
L1
100%
L2
100%
deepseek-v4.1-flash
OpenModels
-67%$0.100/M
Cache read$0.0020/M
-67%$0.400/M
L1
100%
L2
0%
deepseek-v4.1-flash
DeepSeek 原生官方
-55%$0.134/M
Cache read$0.0027/M
-55%$0.537/M
L1
100%
deepseek-v4.1-flash
deepseek
$1.20/M
Cache read$0.024/M
$4.80/M
L1
100%
deepseek-v4.1-flash-0910
deepseek
$1.20/M
Cache read$0.024/M
$4.80/M
L1
100%
deepseek-v4.1-flash
Deepseek
-9%$0.274/M
Cache read$0.0055/M
-9%$1.10/M
L1
99%
deepseek-v4.1-flash
default
Free
Free
L1
100%
按次-deepseek-v4.1-flash
按次计费
$0.065/request
-
L1
100%
[按次]deepseek-v4.1-flash
default
$0.274/request
-
L1
100%
deepseek-v4.1-flash
Self-Deployed-2
-85%$0.044/M
Cache read$0.0009/M
-85%$0.178/M
L1
99%
deepseek-v4.1-flash
china_modal_hight
-40%$0.180/M
Cache read$0.0036/M
-40%$0.720/M
L1
100%
deepseek-v4.1-flash
default
-9%$0.274/M
Cache read$0.0055/M
-9%$1.10/M
Showing 20 model IDs of 33.

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Frequently Asked Questions

What benchmark data does DeepSeek V4.1 Flash include?
LMSpeed shows DeepSeek V4.1 Flash benchmark context, API price, output speed, first-token latency, and provider data across 51 providers when those signals are available.
What is the DeepSeek V4.1 Flash API price?
DeepSeek V4.1 Flash has pricing from undefined provider} other undefined providers}}, ranging from $0.036/request to $97.50/M. VSLLM has the lowest listed price.
What does the DeepSeek V4.1 Flash API pricing table include?
The DeepSeek V4.1 Flash API pricing table compares 51 providers by input price, output price, free tier status, speed, first-token latency, and recent health data when available.
Which provider has the cheapest DeepSeek V4.1 Flash API pricing?
VSLLM currently has the lowest listed DeepSeek V4.1 Flash price at $0.036/request across undefined provider} other undefined providers}}.
Is DeepSeek V4.1 Flash API free?
Yes, DeepSeek V4.1 Flash free API options are available through 3 providerundefined other undefined} on LMSpeed, including 兔子API, 兔子API, 兔子API. These providers offer free API credits or a free tier with no per-token charges.
Where can I get DeepSeek V4.1 Flash free API access?
LMSpeed currently lists 3 free API providerundefined other undefined} for DeepSeek V4.1 Flash: 兔子API, 兔子API, 兔子API. Check each provider row before using it because free tier limits can change.

Also known as

[hm]q|满血/deepseek-v4.1-flash[按次]deepseek-v4.1-flash[次]deepseek-v4.1-flashdeepseek-v4.1-flashdeepseek-v4.1-flash-0910

Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.Artificial AnalysisStandard benchmark data may include BenchLM and other public sources.

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