Noometry

Model comparison

Claude 3 Sonnet vs DeepSeek V4 Flash

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 29.0 on the Noometry Index.

Last verified . 22 shared benchmarks.

Claude 3 Sonnet Anthropic

29.0

Rank #319 Confirmed

DeepSeek V4 Flash DeepSeek

53.6

Rank #35 Confirmed

Summary

  • They share 22 benchmarks with published results for both. Claude 3 Sonnet scores higher in 0 categories and DeepSeek V4 Flash in 8 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 10.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 3 Sonnet and 94.4% for DeepSeek V4 Flash.
  • DeepSeek V4 Flash has downloadable open weights; the other is API-only.

Side by side

Claude 3 SonnetDeepSeek V4 Flash
ProviderAnthropicDeepSeek
Noometry Index29.053.6
Released2024-02-292026-04-24
WeightsProprietaryOpen
Context window—1M
Max output—393K
Input $ / M tokens—$0.15
Output $ / M tokens—$0.60
Results tracked3041

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Category by category

Coding DeepSeek V4 Flash leads

Claude 3 Sonnet: 29.6 (#302), DeepSeek V4 Flash: 47.9 (#59)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
WeirdML10.2%63%
LMArena Coding12231457
FrontierCode—18.8%
LMArena WebDev—1582
SciCode—49.9%
BigCodeBench Instruct42.7%—
BigCodeBench Complete53.8%—
ALE-Bench—1,306
HumanEval+64%—
MBPP+69.3%—

Reasoning DeepSeek V4 Flash leads

Claude 3 Sonnet: 20.5 (#237), DeepSeek V4 Flash: 53.7 (#30)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Hard Prompts11971444
DTBench53.6%90.9%
Epoch Capabilities Index120.7154.49
ARC-AGI-2—61.4%
SimpleBench—61.1%
Kagi LLM Benchmark—52.2%
NYT Connections (extended)—89.6%
ARC-AGI-1—89%
CritPt—16.6%
Chess Puzzles—33%
Mystery Game Puzzles—34%
LMCA—41.7%
WinoGrande75.1%—

Math DeepSeek V4 Flash leads

Claude 3 Sonnet: 10.7 (#310), DeepSeek V4 Flash: 60.3 (#37)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
OTIS Mock AIME 2024-20252.5%94.4%
LMArena Math12131427
FrontierMath (Tiers 1-3)—57.5%
FrontierMath Tier 4—24.4%
MathArena Final-Answer Competitions—76.5%
ProofBench—56%
MATH Level 518.2%—

Knowledge DeepSeek V4 Flash leads

Claude 3 Sonnet: 21.1 (#276), DeepSeek V4 Flash: 55.4 (#48)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
GPQA Diamond40.6%91%
LMArena Expert11731441
SimpleQA Verified—33.6%
MMLU75.9%—

Multimodal Not comparable

Claude 3 Sonnet: 25.2 (#125), DeepSeek V4 Flash: —

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Vision984—

Multilingual DeepSeek V4 Flash leads

Claude 3 Sonnet: 37.8 (#234), DeepSeek V4 Flash: 53.0 (#72)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Non-English12051420
LMArena Chinese11891468
LMArena French12291439
LMArena German12041418
LMArena Japanese11311406
LMArena Korean11281384
LMArena Russian12271428
LMArena Spanish12041436

Instruction Following DeepSeek V4 Flash leads

Claude 3 Sonnet: 62.8 (#235), DeepSeek V4 Flash: 74.9 (#81)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Instruction Following11991421

Long Context DeepSeek V4 Flash leads

Claude 3 Sonnet: 36.7 (#228), DeepSeek V4 Flash: 43.8 (#85)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Longer Query12111434

Writing & Preference DeepSeek V4 Flash leads

Claude 3 Sonnet: 42.1 (#238), DeepSeek V4 Flash: 63.8 (#61)

BenchmarkClaude 3 SonnetDeepSeek V4 Flash
LMArena Text12181432
LMArena Creative Writing11861403
LMArena Multi-Turn12271449
EQ-Bench Creative Writing—1559

Frequently asked questions

Is Claude 3 Sonnet better than DeepSeek V4 Flash?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 29.0 on the Noometry Index.

Is Claude 3 Sonnet or DeepSeek V4 Flash better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.9 versus 29.6 in the Noometry coding category.

How many benchmarks do Claude 3 Sonnet and DeepSeek V4 Flash share?

22 benchmarks have published results for both models. Claude 3 Sonnet has 30 scored results on Noometry and DeepSeek V4 Flash has 41.

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