Model comparison
Claude Haiku 4.5 vs Grok 3
Claude Haiku 4.5 and Grok 3 score almost the same on the Noometry Index (39.5 vs 39.9), so choose on price, context window or the category you care about most.
Last verified . 33 shared benchmarks.
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 46.2 to 37.7.
- The biggest single-benchmark swing is ARC-AGI-1: 47.7% for Claude Haiku 4.5 and 5.5% for Grok 3.
Side by side
| Claude Haiku 4.5 | Grok 3 | |
|---|---|---|
| Provider | Anthropic | xAI |
| Noometry Index | 39.5 | 39.9 |
| Released | 2025-10-15 | 2025-04-09 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $5 | — |
| Results tracked | 53 | 40 |
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Category by category
Coding Claude Haiku 4.5 leads
Claude Haiku 4.5: 44.0 (#78), Grok 3: 41.9 (#115)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| WeirdML | 45.4% | 37.2% |
| LMArena Coding | 1453 | 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 leads
Claude Haiku 4.5: 33.6 (#52), Grok 3: 30.5 (#76)
| 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 leads
Claude Haiku 4.5: 15.1 (#320), Grok 3: 13.7 (#333)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| ARC-AGI-2 | 4% | 0% |
| ARC-AGI-1 | 47.7% | 5.5% |
| LMArena Hard Prompts | 1420 | 1434 |
| Epoch Capabilities Index | 142.41 | 138.33 |
| 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 leads
Claude Haiku 4.5: 44.9 (#78), Grok 3: 38.0 (#145)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 66.7% | 55.6% |
| Omni-MATH | 56.1% | 46.4% |
| LMArena Math | 1396 | 1391 |
| MATH Level 5 | 96.4% | 88.7% |
| FrontierMath (Feb 2025 set) | 5.9% | 3.8% |
| FrontierMath Tier 4 (v1) | 2.1% | 0% |
Knowledge Grok 3 leads
Claude Haiku 4.5: 37.7 (#153), Grok 3: 46.2 (#82)
| 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 | 1442 | 1421 |
| SimpleQA Verified | 13.2% | — |
| Confabulations | — | 14.2% |
Multimodal Not comparable
Claude Haiku 4.5: 26.8 (#118), Grok 3: —
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1420 | — |
Multilingual Grok 3 leads
Claude Haiku 4.5: 49.9 (#129), Grok 3: 52.3 (#87)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Non-English | 1377 | 1410 |
| LMArena Chinese | 1417 | 1448 |
| LMArena French | 1408 | 1460 |
| LMArena German | 1375 | 1431 |
| LMArena Japanese | 1339 | 1387 |
| LMArena Korean | 1347 | 1373 |
| LMArena Russian | 1381 | 1416 |
| LMArena Spanish | 1420 | 1417 |
Instruction Following Grok 3 leads
Claude Haiku 4.5: 71.4 (#149), Grok 3: 75.0 (#73)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| IFEval | 80.1% | 88.4% |
| LMArena Instruction Following | 1414 | 1409 |
Long Context Claude Haiku 4.5 leads
Claude Haiku 4.5: 43.6 (#92), Grok 3: 38.7 (#192)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Longer Query | 1427 | 1439 |
| Fiction.LiveBench | — | 58.3% |
Writing & Preference Claude Haiku 4.5 leads
Claude Haiku 4.5: 57.9 (#123), Grok 3: 55.8 (#141)
| Benchmark | Claude Haiku 4.5 | Grok 3 |
|---|---|---|
| LMArena Text | 1396 | 1426 |
| LMArena Creative Writing | 1372 | 1414 |
| WildBench | 83.9% | 84.9% |
| LMArena Multi-Turn | 1409 | 1425 |
| Short-Story Creative Writing | — | 76.4% |
| EQ-Bench Creative Writing | — | 1186 |
| EQ-Bench 4 | 1064 | — |
Frequently asked questions
Is Claude Haiku 4.5 better than Grok 3?
Claude Haiku 4.5 and Grok 3 score almost the same on the Noometry Index (39.5 vs 39.9), 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: 44.0 versus 41.9 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.