Noometry

Model comparison

Claude Opus 5.5 vs Nemotron 4 340b Instruct

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 35.3 on the Noometry Index.

Last verified . 11 shared benchmarks.

Claude Opus 5.5 Anthropic

68.5

Rank #3 Confirmed

Nemotron 4 340b Instruct NVIDIA

35.3

Rank #218 Confirmed

Summary

  • They share 11 benchmarks with published results for both. Claude Opus 5.5 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 math, where Claude Opus 5.5 leads 92.4 to 31.7.
  • Nemotron 4 340b Instruct has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Nemotron 4 340b Instruct
ProviderAnthropicNVIDIA
Noometry Index68.535.3
Released2026-09-222024-06-14
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked3517

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.4 (#1), Nemotron 4 340b Instruct: 34.6 (#223)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Coding15451209
FrontierCode54.4%—
CursorBench57.8%—
LMArena WebDev1820—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#13), Nemotron 4 340b Instruct: —

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
APEX-Agents73.5%—
GDP.pdf30.6%—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 79.5 (#2), Nemotron 4 340b Instruct: 22.4 (#180)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Hard Prompts15451202
ARC-AGI-292.5%—
NYT Connections (extended)88.5%—
ARC-AGI-197.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 92.4 (#2), Nemotron 4 340b Instruct: 31.7 (#193)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math—1216

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.6 (#9), Nemotron 4 340b Instruct: 31.4 (#212)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Expert15641171
GPQA Diamond90.6%—
SimpleQA Verified72.2%—

Multimodal Not comparable

Claude Opus 5.5: 56.5 (#2), Nemotron 4 340b Instruct: —

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.8 (#1), Nemotron 4 340b Instruct: 38.0 (#228)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Non-English15131206
LMArena Chinese15721214
LMArena Russian15321219
LMArena French—1196
LMArena German—1192
LMArena Japanese—1128
LMArena Korean—1148
LMArena Spanish—1195

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.1 (#2), Nemotron 4 340b Instruct: 63.3 (#227)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Instruction Following15351203

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.3 (#18), Nemotron 4 340b Instruct: 37.1 (#216)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Longer Query15401225

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.7 (#3), Nemotron 4 340b Instruct: 42.9 (#229)

BenchmarkClaude Opus 5.5Nemotron 4 340b Instruct
LMArena Text15181225
LMArena Creative Writing15381203
LMArena Multi-Turn15201214
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than Nemotron 4 340b Instruct?

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 35.3 on the Noometry Index.

Is Claude Opus 5.5 or Nemotron 4 340b Instruct better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.4 versus 34.6 in the Noometry coding category.

How many benchmarks do Claude Opus 5.5 and Nemotron 4 340b Instruct share?

11 benchmarks have published results for both models. Claude Opus 5.5 has 35 scored results on Noometry and Nemotron 4 340b Instruct has 17.

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