Noometry

Model comparison

Grok 4.3 vs Nemotron 4 340b Instruct

Grok 4.3 is the stronger model overall, scoring 43.6 to 35.3 on the Noometry Index.

Last verified . 17 shared benchmarks.

Grok 4.3 xAI

43.6

Rank #80 Confirmed

Nemotron 4 340b Instruct NVIDIA

35.3

Rank #218 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Grok 4.3 scores higher in 8 categories and Nemotron 4 340b Instruct in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 31.4.
  • Nemotron 4 340b Instruct has downloadable open weights; the other is API-only.

Side by side

Grok 4.3Nemotron 4 340b Instruct
ProviderxAINVIDIA
Noometry Index43.635.3
Released2026-04-172024-06-14
WeightsProprietaryOpen
Context window1M—
Max output30K—
Input $ / M tokens$1.25—
Output $ / M tokens$2.50—
Results tracked4017

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Category by category

Coding Grok 4.3 leads

Grok 4.3: 41.3 (#117), Nemotron 4 340b Instruct: 34.6 (#223)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Coding14151209
LMArena WebDev1357—
SciCode47.3%—
WeirdML49.9%—
ALE-Bench944.17—

Agentic & Tool Use Not comparable

Grok 4.3: 27.6 (#93), Nemotron 4 340b Instruct: —

BenchmarkGrok 4.3Nemotron 4 340b Instruct
GDP.pdf8%—
LMArena Search1165—
Vending-Bench 235.26—

Reasoning Grok 4.3 leads

Grok 4.3: 34.9 (#60), Nemotron 4 340b Instruct: 22.4 (#180)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Hard Prompts13971202
NYT Connections (extended)55.2%—
CritPt8%—
Chess Puzzles25%—
DTBench90.7%—
LMCA38.3%—
Epoch Capabilities Index149.13—
ForecastBench60.3—

Math Grok 4.3 leads

Grok 4.3: 45.8 (#60), Nemotron 4 340b Instruct: 31.7 (#193)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Math13881216
FrontierMath (Tiers 1-3)42.8%—
FrontierMath Tier 414.6%—
OTIS Mock AIME 2024-202593.3%—
ProofBench11%—

Knowledge Grok 4.3 leads

Grok 4.3: 52.5 (#57), Nemotron 4 340b Instruct: 31.4 (#212)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Expert13851171
GPQA Diamond88.8%—
SimpleQA Verified33.2%—

Multimodal Not comparable

Grok 4.3: 31.6 (#96), Nemotron 4 340b Instruct: —

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Vision1231—
Blueprint-Bench 20%—

Multilingual Grok 4.3 leads

Grok 4.3: 50.7 (#114), Nemotron 4 340b Instruct: 38.0 (#228)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Non-English13851206
LMArena Chinese14231214
LMArena French14121196
LMArena German13951192
LMArena Japanese13791128
LMArena Korean13571148
LMArena Russian13991219
LMArena Spanish14021195

Instruction Following Grok 4.3 leads

Grok 4.3: 72.3 (#135), Nemotron 4 340b Instruct: 63.3 (#227)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Instruction Following13661203

Long Context Grok 4.3 leads

Grok 4.3: 42.5 (#118), Nemotron 4 340b Instruct: 37.1 (#216)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Longer Query13931225

Writing & Preference Grok 4.3 leads

Grok 4.3: 58.6 (#112), Nemotron 4 340b Instruct: 42.9 (#229)

BenchmarkGrok 4.3Nemotron 4 340b Instruct
LMArena Text13971225
LMArena Creative Writing13801203
LMArena Multi-Turn14061214
EQ-Bench 41075—

Frequently asked questions

Is Grok 4.3 better than Nemotron 4 340b Instruct?

Grok 4.3 is the stronger model overall, scoring 43.6 to 35.3 on the Noometry Index.

Is Grok 4.3 or Nemotron 4 340b Instruct better for coding?

Grok 4.3 scores higher on coding benchmarks: 41.3 versus 34.6 in the Noometry coding category.

How many benchmarks do Grok 4.3 and Nemotron 4 340b Instruct share?

17 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Nemotron 4 340b Instruct has 17.

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