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Data points: 144

On this page

Key TakeawaysComparison sheetBenchmark score comparisonAPI audit comparisonProvider examplesWhen to choose each modelFAQRelated compare reports

Key Takeaways

The readout for DeepSeek V4 Flash and Gemini 3.1 Pro, before the detailed comparison sheet.

Decision read

DeepSeek V4 Flash

DeepSeek V4 Flash currently has the stronger profile, with verified wins split 5 to 1.

Evidence depth

144 data points

Includes 27 benchmark rows, 5 audit samples, and 10 provider examples.

Selection signal

Start with DeepSeek V4 Flash

The charts below split 42 high-signal samples across speed, scores, and audit health.

Change comparison

Switch either side of this report to compare another model with the same LMSpeed data pipeline.

Select a different model to open a new comparison URL.

Model compare

DeepSeek V4 Flash vs Gemini 3.1 Pro

deepseek-v4-flash-vs-gemini-3-1-pro

Model A

DeepSeek

DeepSeek V4 Flash

Model B

Gemini

Gemini 3.1 Pro

Overall leaderLeadingContender
Verified metric wins5 wins1 wins
Where it leadsCheapest input price, First-token latency, Free providers, Provider coverage, Recent testsAverage speed
Model metadataDeepSeek V4 Flash exposes 1.0M tokens; notable signals: Text input, Text output, Tool calling, Structured outputs.Gemini 3.1 Pro exposes 1.0M tokens; notable signals: Text input, Image input, File input, Audio input.
DeveloperDeepSeekGoogle
Context window1.0M tokens1.0M tokens
Max output16.4K tokens65.5K tokens
ReleasedApr 2026Feb 2026
Modalities

Input

Text

Output

Text

Input

AudioFileImageTextvideo

Output

Text
Features
Text inputText outputTool callingStructured outputsJSON modeReasoning
Text inputImage inputFile inputAudio inputText outputTool callingStructured outputsJSON modeReasoning
ParametersNo dataNo data
TokenizerDeepSeekGemini
Knowledge cutoffNo dataNo data
OpenRouter IDdeepseek/deepseek-v4-flashgoogle/gemini-3.1-pro-preview
ReferencesNo dataNo data

Benchmark score comparison

Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.

Category performance

Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.

Model A coverage
7 / 8
Model B coverage
6 / 8
Shared
6 shared categories
DeepSeek V4 FlashGemini 3.1 Pro
Category performanceCompare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.AgentsCodingReasoningKnowledgeMathMultilingualMultimodalInstruction following

Avg. score

DeepSeek V4 Flash

68

Avg. score

Gemini 3.1 Pro

65.2

Selected category

Multimodal

DeepSeek V4 Flash leads by 21.7

Professional benchmark details

Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.

Aggregateverified

BenchLM overall score

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

70.0

Rank #23/82 · confidence 2 · eval date 2026-04-24

+18.0

Gemini 3.1 Pro

winner

88.0

Rank #5/82 · confidence 3 · eval date 2026-02-19

Pricingverified

Output price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.280/M

Rank #2/95 · confidence 4

+$11.72/M

Gemini 3.1 Pro

$12.00/M

Rank #73/95 · confidence 4

Pricingverified

Blended price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.175/M

Rank #6/95 · confidence 4

+$4.33/M

Gemini 3.1 Pro

$4.50/M

Rank #73/95 · confidence 4

Pricingverified

Input price

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

winner

$0.140/M

Rank #10/95 · confidence 4

+$1.86/M

Gemini 3.1 Pro

$2.00/M

Rank #72/95 · confidence 4

Reasoningverified

GPQA

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

86.7%

Rank #22/103 · confidence 4

+7.4%

Gemini 3.1 Pro

winner

94.1%

Rank #2/103 · confidence 4

Reasoningverified

CritPt

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

3.4

Rank #21/44 · confidence 2 · eval date 2026-04-24

+14.3

Gemini 3.1 Pro

winner

17.7

Rank #5/44 · confidence 3 · eval date 2026-02-19

Reasoningverified

HLE

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

27.8%

Rank #20/103 · confidence 4

+16.9%

Gemini 3.1 Pro

winner

44.7%

Rank #5/103 · confidence 4

Reasoningverified

AA-LCR

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

62.7

Rank #29/57 · confidence 2 · eval date 2026-04-24

+10.0

Gemini 3.1 Pro

winner

72.7

Rank #7/57 · confidence 3 · eval date 2026-02-19

Codingverified

AA Coding Index

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

39.8

Rank #24/61 · confidence 2 · eval date 2026-04-24

+29.1

Gemini 3.1 Pro

winner

68.8

Rank #1/61 · confidence 3 · eval date 2026-02-19

Codingverified

AA-SciCode

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

42.0

Rank #30/63 · confidence 2 · eval date 2026-04-24

+16.9

Gemini 3.1 Pro

winner

58.9

Rank #1/63 · confidence 3 · eval date 2026-02-19

Codingverified

SciCode

SourceDeepSeek V4 Flash (Reasoning, High Effort)

DeepSeek V4 Flash

42.0%

Rank #37/101 · confidence 4

+16.9%

Gemini 3.1 Pro

winner

58.9%

Rank #2/101 · confidence 4

Codingverified

BenchLM Coding score

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

81.6

Rank #14/69 · confidence 2 · eval date 2026-04-24

+11.6

Gemini 3.1 Pro

winner

93.2

Rank #4/69 · confidence 3 · eval date 2026-02-19

Codingverified

Terminal-Bench Hard

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

38.6

Rank #23/59 · confidence 2 · eval date 2026-04-24

+15.2

Gemini 3.1 Pro

winner

53.8

Rank #4/59 · confidence 3 · eval date 2026-02-19

Knowledgeverified

AA-GPQA Diamond

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

86.7

Rank #19/63 · confidence 2 · eval date 2026-04-24

+7.4

Gemini 3.1 Pro

winner

94.1

Rank #1/63 · confidence 3 · eval date 2026-02-19

Knowledgeverified

GPQA-D

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

87.4

Rank #10/13 · confidence 2 · eval date 2026-04-24

+6.9

Gemini 3.1 Pro

winner

94.3

Rank #1/13 · confidence 3 · eval date 2026-02-19

Knowledgeverified

AA-HLE

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

27.8

Rank #17/63 · confidence 2 · eval date 2026-04-24

+16.9

Gemini 3.1 Pro

winner

44.7

Rank #2/63 · confidence 3 · eval date 2026-02-19

Knowledgeverified

AA-Omniscience Accuracy

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

35.5

Rank #23/58 · confidence 2 · eval date 2026-04-24

+19.8

Gemini 3.1 Pro

winner

55.3

Rank #2/58 · confidence 3 · eval date 2026-02-19

Knowledgeverified

Artificial Analysis Intelligence Index

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

37.4

Rank #24/66 · confidence 2 · eval date 2026-04-24

+9.1

Gemini 3.1 Pro

winner

46.5

Rank #5/66 · confidence 3 · eval date 2026-02-19

Knowledgeverified

BenchLM Knowledge score

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

61.8

Rank #33/67 · confidence 2 · eval date 2026-04-24

+31.5

Gemini 3.1 Pro

winner

93.3

Rank #6/67 · confidence 3 · eval date 2026-02-19

Knowledgeverified

AA-Omniscience Hallucination Rate

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

winner

89.7

Rank #9/58 · confidence 2 · eval date 2026-04-24

+39.8

Gemini 3.1 Pro

49.9

Rank #46/58 · confidence 3 · eval date 2026-02-19

Multimodalverified

Design Arena Website

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

1254.0

Rank #20/46 · confidence 2 · eval date 2026-04-24

+40.0

Gemini 3.1 Pro

winner

1294.0

Rank #10/46 · confidence 3 · eval date 2026-02-19

Instruction followingverified

AA-IFBench

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

73.5

Rank #12/60 · confidence 2 · eval date 2026-04-24

+3.6

Gemini 3.1 Pro

winner

77.1

Rank #4/60 · confidence 3 · eval date 2026-02-19

Agentsverified

Tau2-Telecom

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

95.6

Rank #9/58 · confidence 2 · eval date 2026-04-24

0.0

Gemini 3.1 Pro

95.6

Rank #9/58 · confidence 3 · eval date 2026-02-19

Agentsverified

Claw-Eval

SourceDeepSeek V4 Flash

DeepSeek V4 Flash

57.8

Rank #10/21 · confidence 2 · eval date 2026-04-24

0.0

Gemini 3.1 Pro

57.8

Rank #10/21 · confidence 3 · eval date 2026-02-19

Agentsverified

Gert Labs

SourceDeepSeek V4 Flash

DeepSeek V4 Flash

54.4

Rank #13/36 · confidence 2 · eval date 2026-04-24

+2.5

Gemini 3.1 Pro

winner

56.9

Rank #11/36 · confidence 3 · eval date 2026-02-19

Agentsverified

AA Agentic Index

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

winner

62.3

Rank #12/57 · confidence 2 · eval date 2026-04-24

+40.9

Gemini 3.1 Pro

21.4

Rank #49/57 · confidence 3 · eval date 2026-02-19

Agentsverified

BenchLM Agentic score

SourceDeepSeek V4 Flash (High)

DeepSeek V4 Flash

60.6

Rank #24/69 · confidence 2 · eval date 2026-04-24

+6.3

Gemini 3.1 Pro

winner

66.9

Rank #21/69 · confidence 3 · eval date 2026-02-19

API audit comparison

Latest completed audits from shared providers, with four safety and integrity score groups plus report links.

Provider
DeepSeekDeepSeek V4 Flash
GeminiGemini 3.1 Pro
速创APIWinner: DeepSeek V4 Flash
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

Audit score

92

View report
10068100100
Gemini

Gemini 3.1 Pro

gemini-3.1-pro-preview

No audit yet

MyDamoxingWinner: DeepSeek V4 Flash
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

Audit score

84

View report
787584100
Gemini

Gemini 3.1 Pro

gemini-3.1-pro-20260219

No audit yet

小水管 APIWinner: DeepSeek V4 Flash
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

Audit score

83

View report
807280100
Gemini

Gemini 3.1 Pro

gemini-3.1-pro

No audit yet

VSLLMWinner: Gemini 3.1 Pro
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash-free

No audit yet

Gemini

Gemini 3.1 Pro

gemini-3.1-pro-preview

Audit score

79

View report
698463100
TokenessWinner: DeepSeek V4 Flash
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

Audit score

76

View report
538468100
Gemini

Gemini 3.1 Pro

gemini-3.1-pro

No audit yet

Provider examples

Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.

Provider
DeepSeekDeepSeek V4 Flash
GeminiGemini 3.1 Pro
OpenCode50 tests
DeepSeek

DeepSeek V4 Flash

speed / latency

57 tok/s / 30314ms

input / output

No data

Gemini

Gemini 3.1 Pro

speed / latency

N/A / N/A

input / output

No data

小水管 API30 tests
DeepSeek

DeepSeek V4 Flash

speed / latency

83 tok/s / 5114ms

input / output

No data

Gemini

Gemini 3.1 Pro

speed / latency

101 tok/s / 15025ms

input / output

No data

CatClaw API20 tests
DeepSeek

DeepSeek V4 Flash

speed / latency

42 tok/s / 3076ms

input / output

No data

Gemini

Gemini 3.1 Pro

speed / latency

121 tok/s / 11404ms

input / output

No data

9527 API10 tests
DeepSeek

DeepSeek V4 Flash

speed / latency

31 tok/s / 7293ms

input / output

No data

Gemini

Gemini 3.1 Pro

speed / latency

N/A / N/A

input / output

No data

Fengsili API10 tests
DeepSeek

DeepSeek V4 Flash

speed / latency

86 tok/s / 4077ms

input / output

No data

Gemini

Gemini 3.1 Pro

speed / latency

N/A / N/A

input / output

No data

91VIP API
DeepSeek

DeepSeek V4 Flash

deepseek-ai/deepseek-v4-flash

speed / latency

No data

input / output

$0/M / $0/M

Gemini

Gemini 3.1 Pro

gemini-3.1-pro

speed / latency

No data

input / output

$0.100/M / $0.100/M

Dibin84 API Hub
DeepSeek

DeepSeek V4 Flash

deepseek-ai/deepseek-v4-flash

speed / latency

No data

input / output

$0/M / $0/M

Gemini

Gemini 3.1 Pro

gemini-3.1-pro-preview

speed / latency

No data

input / output

$2.00/M / $12.00/M

Moyanjdc API
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

speed / latency

No data

input / output

$0/M / $0/M

Gemini

Gemini 3.1 Pro

gemini-3.1-pro-preview

speed / latency

No data

input / output

$0/M / $0/M

梦德 API
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash

speed / latency

No data

input / output

$0/M / $0/M

Gemini

Gemini 3.1 Pro

google/gemini-3.1-pro-preview

speed / latency

No data

input / output

$0/M / $0/M

VSLLM
DeepSeek

DeepSeek V4 Flash

deepseek-v4-flash-free

speed / latency

No data

input / output

$0.0007/M / $0.0007/M

Gemini

Gemini 3.1 Pro

gemini-3.1-pro-preview

speed / latency

No data

input / output

$1095.00/M / $4380.00/M

When to choose each model

This report only uses LMSpeed data for DeepSeek V4 Flash and Gemini 3.1 Pro: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.

Guidance
DeepSeekDeepSeek V4 Flash
GeminiGemini 3.1 Pro
When to choose each model

DeepSeek V4 Flash

DeepSeek V4 Flash is stronger when you prioritize Cheapest input price, First-token latency, Free providers, Provider coverage, Recent tests.

Gemini 3.1 Pro

Gemini 3.1 Pro is stronger when you prioritize Average speed.

FAQ

TL;DR: DeepSeek V4 Flash leads across 144 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.

Why is this comparison indexable?
It has 6 verifiable comparison points, and both models have pricing or benchmark data.
Are missing metrics invented?
No. Metrics without LMSpeed data are omitted from this report.

Related compare reports

Continue from DeepSeek V4 Flash vs Gemini 3.1 Pro into nearby model comparisons with enough verified LMSpeed data.

DeepSeekDeepSeek V4 Flash vs GPT 5 4deepseek-v4-flash-vs-gpt-5-4ClaudeClaude Opus 4 6 vs DeepSeek V4 Flashclaude-opus-4-6-vs-deepseek-v4-flashDeepSeekDeepSeek V4 Flash vs GPT 5deepseek-v4-flash-vs-gpt-5DeepSeekDeepSeek V4 Flash vs GPT 5 2deepseek-v4-flash-vs-gpt-5-2

Data as of Jul 3, 2026, 02:15 PM·Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.