Noometry

Model comparison

Claude 2 vs Grok 4.5

Grok 4.5 is the stronger model overall, scoring 55.0 to 25.0 on the Noometry Index.

Last verified . 4 shared benchmarks.

Claude 2 Anthropic

25.0

Rank #346 Reported

Grok 4.5 xAI

55.0

Rank #25 Confirmed

Summary

  • They share 4 benchmarks with published results for both. Claude 2 scores higher in 0 categories and Grok 4.5 in 3 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in math, where Grok 4.5 leads 60.9 to 9.3.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 2.5% for Claude 2 and 97.8% for Grok 4.5.

Side by side

Claude 2Grok 4.5
ProviderAnthropicxAI
Noometry Index25.055.0
Released2023-07-112026-07-08
WeightsProprietaryProprietary
Context window—500K
Max output—500K
Input $ / M tokens—$2
Output $ / M tokens—$6
Results tracked852

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Category by category

Coding Not comparable

Claude 2: —, Grok 4.5: 52.2 (#35)

BenchmarkClaude 2Grok 4.5
DeepSWE—53.8%
FrontierCode—42.4%
LMArena WebDev—1553
SciCode—54.1%
WeirdML—46.4%
LMArena Coding—1474
ALE-Bench—1,309
HumanEval+61.6%—

Agentic & Tool Use Not comparable

Claude 2: —, Grok 4.5: 44.4 (#17)

BenchmarkClaude 2Grok 4.5
APEX-Agents—56.2%
τ²-bench Banking—47.9%
PostTrainBench—23.4%
GBAEval—65.4%
GDP.pdf—14%
LMArena Search—1213
Vending-Bench 2—3,887

Reasoning Grok 4.5 leads

Claude 2: 21.7 (#216), Grok 4.5: 56.1 (#25)

BenchmarkClaude 2Grok 4.5
DTBench51.9%96.5%
Epoch Capabilities Index120.13153.92
ARC-AGI-2—52.6%
SimpleBench—70%
Kagi LLM Benchmark—83.5%
NYT Connections (extended)—79.9%
ARC-AGI-1—87.2%
CritPt—15.4%
Chess Puzzles—36%
LMArena Hard Prompts—1462
LMCA—45.2%
Surface Evolver Bench—74.4%

Math Grok 4.5 leads

Claude 2: 9.3 (#320), Grok 4.5: 60.9 (#35)

BenchmarkClaude 2Grok 4.5
OTIS Mock AIME 2024-20252.5%97.8%
FrontierMath (Tiers 1-3)—57.2%
FrontierMath Tier 4—24.4%
ProofBench—31%
LMArena Math—1459
MATH Level 511.7%—

Knowledge Grok 4.5 leads

Claude 2: 16.9 (#287), Grok 4.5: 62.3 (#24)

BenchmarkClaude 2Grok 4.5
GPQA Diamond34.7%93.4%
SimpleQA Verified—48.3%
LMArena Expert—1466
MMLU78.5%—
TriviaQA87.5%—

Multimodal Not comparable

Claude 2: —, Grok 4.5: 37.6 (#72)

BenchmarkClaude 2Grok 4.5
LMArena Vision—1288
Blueprint-Bench 2—27.3%
Furniture Assembly—22.5%
LMArena Document—1452

Multilingual Not comparable

Claude 2: —, Grok 4.5: 54.4 (#42)

BenchmarkClaude 2Grok 4.5
LMArena Non-English—1440
LMArena Chinese—1496
LMArena French—1456
LMArena German—1446
LMArena Japanese—1428
LMArena Korean—1404
LMArena Russian—1448
LMArena Spanish—1450

Instruction Following Not comparable

Claude 2: —, Grok 4.5: 76.0 (#48)

BenchmarkClaude 2Grok 4.5
LMArena Instruction Following—1446

Long Context Not comparable

Claude 2: —, Grok 4.5: 44.8 (#56)

BenchmarkClaude 2Grok 4.5
LMArena Longer Query—1463

Writing & Preference Not comparable

Claude 2: —, Grok 4.5: 65.8 (#42)

BenchmarkClaude 2Grok 4.5
LMArena Text—1448
LMArena Creative Writing—1442
EQ-Bench Creative Writing—1579
LMArena Multi-Turn—1456

Frequently asked questions

Is Claude 2 better than Grok 4.5?

Grok 4.5 is the stronger model overall, scoring 55.0 to 25.0 on the Noometry Index.

How many benchmarks do Claude 2 and Grok 4.5 share?

4 benchmarks have published results for both models. Claude 2 has 8 scored results on Noometry and Grok 4.5 has 52.

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