# Claude Haiku 4.5 vs Grok 3

> Claude Haiku 4.5 and Grok 3 score almost the same on the Noometry Index (39.3 vs 39.6), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/claude-haiku-4-5-vs-grok-3
- Last updated: 2026-10-10
- Shared benchmarks: 33

## Summary

- They share 33 benchmarks with published results for both. Claude Haiku 4.5 scores higher in 6 categories and Grok 3 in 3 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 3 leads 46.0 to 37.6.
- The biggest single-benchmark swing is ARC-AGI-1: 47.7% for Claude Haiku 4.5 and 5.5% for Grok 3.

## Snapshot

| | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 39.3 | 39.6 |
| Rank | 155 | 150 |
| Context | 200K | — |
| Input $/M | $1 | — |
| Output $/M | $5 | — |
| Weights | Proprietary | Proprietary |

## Coding

- Claude Haiku 4.5: 43.9 (#71)
- Grok 3: 41.5 (#113)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| WeirdML | 45.4% | 37.2% |
| LMArena Coding | 1454 | 1432 |
| SWE-bench Verified (bash only) | 66.6% | — |
| Aider Polyglot | — | 53.3% |
| LMArena WebDev | 1330 | — |
| SWE-bench Multilingual | 64.7% | — |
| SciCode | 43.3% | — |
| ALE-Bench | 653.48 | — |

## Agentic & Tool Use

- Claude Haiku 4.5: 33.5 (#50)
- Grok 3: 30.2 (#69)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| BALROG | 31.2% | 29.5% |
| Terminal-Bench | 35.5% | — |
| Berkeley Function Calling Leaderboard | 68.7% | — |
| DeepResearch Bench | 45.5% | — |
| ExploitBench | 13.7% | — |
| Vending-Bench 2 | 458.89 | — |

## Reasoning

- Claude Haiku 4.5: 15.1 (#310)
- Grok 3: 13.8 (#322)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 4% | 0% |
| ARC-AGI-1 | 47.7% | 5.5% |
| LMArena Hard Prompts | 1420 | 1433 |
| Epoch Capabilities Index | 142.42 | 138.34 |
| SimpleBench | — | 36.1% |
| Kagi LLM Benchmark | — | 61.3% |
| NYT Connections (extended) | 14.3% | — |
| CritPt | 0% | — |
| Chess Puzzles | 8% | — |
| DTBench | 73.6% | — |
| LMCA | 30.9% | — |
| ForecastBench | 61.4 | — |

## Math

- Claude Haiku 4.5: 43.0 (#69)
- Grok 3: 36.2 (#122)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 66.7% | 55.6% |
| Omni-MATH | 56.1% | 46.4% |
| LMArena Math | 1395 | 1390 |
| MATH Level 5 | 96.4% | 88.7% |
| FrontierMath (Feb 2025 set) | 5.9% | 3.8% |
| FrontierMath Tier 4 (v1) | 2.1% | 0% |

## Knowledge

- Claude Haiku 4.5: 37.6 (#146)
- Grok 3: 46.0 (#76)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| GPQA Diamond | 71.2% | 75.8% |
| MMLU-Pro | 77.7% | 78.8% |
| Vectara Hallucination Rate | 9.8% | 5.8% |
| GPQA (HELM) | 60.5% | 65% |
| LMArena Expert | 1443 | 1420 |
| SimpleQA Verified | 13.2% | — |
| Confabulations | — | 14.2% |

## Multimodal

- Claude Haiku 4.5: 27.0 (#111)
- Grok 3: —

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |

## Multilingual

- Claude Haiku 4.5: 50.1 (#124)
- Grok 3: 52.5 (#81)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1376 | 1411 |
| LMArena Chinese | 1415 | 1448 |
| LMArena French | 1408 | 1460 |
| LMArena German | 1377 | 1431 |
| LMArena Japanese | 1339 | 1389 |
| LMArena Korean | 1346 | 1374 |
| LMArena Russian | 1380 | 1416 |
| LMArena Spanish | 1420 | 1417 |

## Instruction Following

- Claude Haiku 4.5: 71.6 (#144)
- Grok 3: 75.2 (#69)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| IFEval | 80.1% | 88.4% |
| LMArena Instruction Following | 1414 | 1409 |

## Long Context

- Claude Haiku 4.5: 43.6 (#86)
- Grok 3: 38.7 (#187)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1427 | 1439 |
| Fiction.LiveBench | — | 58.3% |

## Writing & Preference

- Claude Haiku 4.5: 58.1 (#119)
- Grok 3: 56.0 (#136)

| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Text | 1396 | 1426 |
| LMArena Creative Writing | 1371 | 1414 |
| WildBench | 83.9% | 84.9% |
| LMArena Multi-Turn | 1409 | 1424 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| EQ-Bench 4 | 1064 | — |

## FAQ

### Is Claude Haiku 4.5 better than Grok 3?

Claude Haiku 4.5 and Grok 3 score almost the same on the Noometry Index (39.3 vs 39.6), so choose on price, context window or the category you care about most.

### Is Claude Haiku 4.5 or Grok 3 better for coding?

Claude Haiku 4.5 scores higher on coding benchmarks: 43.9 versus 41.5 in the Noometry coding category.

### How many benchmarks do Claude Haiku 4.5 and Grok 3 share?

33 benchmarks have published results for both models. Claude Haiku 4.5 has 53 scored results on Noometry and Grok 3 has 40.