Noometry

Model comparison

DeepSeek V4.1 Flash vs Grok 4.3

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 43.8 on the Noometry Index.

Last verified . 32 shared benchmarks.

DeepSeek V4.1 Flash DeepSeek

52.8

Rank #38 Confirmed

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Summary

  • They share 32 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 10 categories and Grok 4.3 in 0 categories; 10 gaps are clear of the uncertainty.
  • The widest gap is in math, where DeepSeek V4.1 Flash leads 66.7 to 46.0.
  • The biggest single-benchmark swing is ProofBench: 54% for DeepSeek V4.1 Flash and 11% for Grok 4.3.
  • DeepSeek V4.1 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.
  • DeepSeek V4.1 Flash has downloadable open weights; the other is API-only.

Side by side

DeepSeek V4.1 FlashGrok 4.3
ProviderDeepSeekxAI
Noometry Index52.843.8
Released2026-09-092026-04-17
WeightsOpenProprietary
Context window1M1M
Max output393K30K
Input $ / M tokens$0.15$1.25
Output $ / M tokens$0.60$2.50
Results tracked3740

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Category by category

Coding DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 52.9 (#32), Grok 4.3: 41.6 (#121)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena WebDev16191357
SciCode51.9%47.3%
LMArena Coding15061415
ALE-Bench1,092944.17
WeirdML—49.9%

Agentic & Tool Use DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 31.2 (#69), Grok 4.3: 27.7 (#99)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
GDP.pdf19.8%8%
APEX-Agents39.5%—
LMArena Search—1165
Vending-Bench 2—35.26

Reasoning DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 50.2 (#36), Grok 4.3: 35.9 (#68)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
NYT Connections (extended)89.6%55.2%
CritPt14.3%8%
LMArena Hard Prompts14831396
DTBench89.9%90.7%
LMCA47%38.3%
Epoch Capabilities Index154.9149.16
Chess Puzzles—25%
Mystery Game Puzzles43%—
Surface Evolver Bench46.3%—
ForecastBench—60.3

Math DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 66.7 (#25), Grok 4.3: 46.0 (#74)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
FrontierMath (Tiers 1-3)67.4%42.8%
FrontierMath Tier 426.8%14.6%
OTIS Mock AIME 2024-202598.3%93.3%
ProofBench54%11%
LMArena Math14771388

Knowledge DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 57.9 (#38), Grok 4.3: 52.5 (#62)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
GPQA Diamond89.8%88.8%
LMArena Expert15061385
SimpleQA Verified—33.2%

Multimodal DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 39.1 (#61), Grok 4.3: 31.6 (#104)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena Vision12771229
Blueprint-Bench 2—0%
Furniture Assembly34.2%—

Multilingual DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 55.0 (#35), Grok 4.3: 50.5 (#120)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena Non-English14481385
LMArena Chinese14971422
LMArena French14521412
LMArena German14841395
LMArena Japanese14121379
LMArena Korean14521356
LMArena Russian14711399
LMArena Spanish14591398

Instruction Following DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 77.3 (#26), Grok 4.3: 72.1 (#140)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena Instruction Following14741366

Long Context DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 45.2 (#47), Grok 4.3: 42.5 (#123)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena Longer Query14751393

Writing & Preference DeepSeek V4.1 Flash leads

DeepSeek V4.1 Flash: 65.4 (#48), Grok 4.3: 58.5 (#118)

BenchmarkDeepSeek V4.1 FlashGrok 4.3
LMArena Text14621397
LMArena Creative Writing14351380
LMArena Multi-Turn14571406
EQ-Bench Creative Writing1540—
EQ-Bench 4—1075

Frequently asked questions

Is DeepSeek V4.1 Flash better than Grok 4.3?

DeepSeek V4.1 Flash is the stronger model overall, scoring 52.8 to 43.8 on the Noometry Index.

Which is cheaper, DeepSeek V4.1 Flash or Grok 4.3?

DeepSeek V4.1 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Grok 4.3 lists at $1.25 and $2.50.

Is DeepSeek V4.1 Flash or Grok 4.3 better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.9 versus 41.6 in the Noometry coding category.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do DeepSeek V4.1 Flash and Grok 4.3 share?

32 benchmarks have published results for both models. DeepSeek V4.1 Flash has 37 scored results on Noometry and Grok 4.3 has 40.

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