Noometry

Model comparison

Claude Haiku 4.5 vs Grok 4.1

Grok 4.1 is the stronger model overall, scoring 41.5 to 39.5 on the Noometry Index.

Last verified . 18 shared benchmarks.

Claude Haiku 4.5 Anthropic

39.5

Rank #165 Confirmed

Grok 4.1 xAI

41.5

Rank #134 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 3 categories and Grok 4.1 in 6 categories; 7 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Grok 4.1 leads 29.5 to 15.1.

Side by side

Claude Haiku 4.5Grok 4.1
ProviderAnthropicxAI
Noometry Index39.541.5
Released2025-10-152025-11-17
WeightsProprietaryProprietary
Context window200K—
Max output64K—
Input $ / M tokens$1—
Output $ / M tokens$5—
Results tracked5319

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Category by category

Coding Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.0 (#78), Grok 4.1: 33.7 (#253)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena WebDev13301214
LMArena Coding14531445
SWE-bench Verified (bash only)66.6%—
SWE-bench Multilingual64.7%—
SciCode43.3%—
WeirdML45.4%—
ALE-Bench653.48—

Agentic & Tool Use Too close to call

Claude Haiku 4.5: 33.6 (#52), Grok 4.1: 34.1 (#49)

BenchmarkClaude Haiku 4.5Grok 4.1
Terminal-Bench35.5%—
Berkeley Function Calling Leaderboard68.7%—
Cybench—39%
DeepResearch Bench45.5%—
BALROG31.2%—
ExploitBench13.7%—
Vending-Bench 2458.89—

Reasoning Grok 4.1 leads

Claude Haiku 4.5: 15.1 (#320), Grok 4.1: 29.5 (#91)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Hard Prompts14201435
ARC-AGI-24%—
NYT Connections (extended)14.3%—
ARC-AGI-147.7%—
CritPt0%—
Chess Puzzles8%—
DTBench73.6%—
LMCA30.9%—
Epoch Capabilities Index142.41—
ForecastBench61.4—

Math Claude Haiku 4.5 leads

Claude Haiku 4.5: 44.9 (#78), Grok 4.1: 38.9 (#120)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Math13961422
OTIS Mock AIME 2024-202566.7%—
Omni-MATH56.1%—
MATH Level 596.4%—
FrontierMath (Feb 2025 set)5.9%—
FrontierMath Tier 4 (v1)2.1%—

Knowledge Grok 4.1 leads

Claude Haiku 4.5: 37.7 (#153), Grok 4.1: 39.5 (#133)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Expert14421417
GPQA Diamond71.2%—
SimpleQA Verified13.2%—
MMLU-Pro77.7%—
Vectara Hallucination Rate9.8%—
GPQA (HELM)60.5%—

Multimodal Not comparable

Claude Haiku 4.5: 26.8 (#118), Grok 4.1: —

BenchmarkClaude Haiku 4.5Grok 4.1
Blueprint-Bench 20%—
LMArena Document1420—

Multilingual Grok 4.1 leads

Claude Haiku 4.5: 49.9 (#129), Grok 4.1: 53.4 (#68)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Non-English13771425
LMArena Chinese14171465
LMArena French14081448
LMArena German13751446
LMArena Japanese13391397
LMArena Korean13471407
LMArena Russian13811434
LMArena Spanish14201438

Instruction Following Grok 4.1 leads

Claude Haiku 4.5: 71.4 (#149), Grok 4.1: 73.8 (#111)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Instruction Following14141400
IFEval80.1%—

Long Context Too close to call

Claude Haiku 4.5: 43.6 (#92), Grok 4.1: 43.2 (#100)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Longer Query14271416

Writing & Preference Grok 4.1 leads

Claude Haiku 4.5: 57.9 (#123), Grok 4.1: 62.4 (#75)

BenchmarkClaude Haiku 4.5Grok 4.1
LMArena Text13961437
LMArena Creative Writing13721411
LMArena Multi-Turn14091437
WildBench83.9%—
EQ-Bench 41064—

Frequently asked questions

Is Claude Haiku 4.5 better than Grok 4.1?

Grok 4.1 is the stronger model overall, scoring 41.5 to 39.5 on the Noometry Index.

Is Claude Haiku 4.5 or Grok 4.1 better for coding?

Claude Haiku 4.5 scores higher on coding benchmarks: 44.0 versus 33.7 in the Noometry coding category.

How many benchmarks do Claude Haiku 4.5 and Grok 4.1 share?

18 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Grok 4.1 has 19.

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