Model comparison
Grok 4.5 vs o1-mini
Grok 4.5 is the stronger model overall, scoring 55.0 to 34.0 on the Noometry Index.
Last verified . 24 shared benchmarks.
Summary
- They share 24 benchmarks with published results for both. Grok 4.5 scores higher in 9 categories and o1-mini in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 8.8.
- The biggest single-benchmark swing is ARC-AGI-1: 87.2% for Grok 4.5 and 14% for o1-mini.
Side by side
| Grok 4.5 | o1-mini | |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 55.0 | 34.0 |
| Released | 2026-07-08 | 2024-09-12 |
| Weights | Proprietary | Proprietary |
| Context window | 500K | — |
| Max output | 500K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $6 | — |
| Results tracked | 52 | 39 |
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Category by category
Coding Grok 4.5 leads
Grok 4.5: 52.2 (#35), o1-mini: 35.5 (#224)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| WeirdML | 46.4% | 36.3% |
| LMArena Coding | 1474 | 1362 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1553 | — |
| SciCode | 54.1% | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 1,309 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use Grok 4.5 leads
Grok 4.5: 44.4 (#17), o1-mini: 24.6 (#118)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| APEX-Agents | 56.2% | — |
| τ²-bench Banking | 47.9% | — |
| Cybench | — | 10% |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| GDP.pdf | 14% | — |
| LMArena Search | 1213 | — |
| Vending-Bench 2 | 3,887 | — |
Reasoning Grok 4.5 leads
Grok 4.5: 56.1 (#25), o1-mini: 8.8 (#346)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| ARC-AGI-2 | 52.6% | 0.8% |
| SimpleBench | 70% | 18.1% |
| ARC-AGI-1 | 87.2% | 14% |
| LMArena Hard Prompts | 1462 | 1333 |
| Epoch Capabilities Index | 153.92 | 135.82 |
| Kagi LLM Benchmark | 83.5% | — |
| NYT Connections (extended) | 79.9% | — |
| CritPt | 15.4% | — |
| Chess Puzzles | 36% | — |
| LiveBench Reasoning | — | 72.3% |
| DTBench | 96.5% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 45.2% | — |
| Surface Evolver Bench | 74.4% | — |
| LiveBench | — | 57.8% |
Math Grok 4.5 leads
Grok 4.5: 60.9 (#35), o1-mini: 35.4 (#186)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 97.8% | 46.9% |
| LMArena Math | 1459 | 1358 |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| ProofBench | 31% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath (Feb 2025 set) | — | 1.7% |
Knowledge Grok 4.5 leads
Grok 4.5: 62.3 (#24), o1-mini: 34.9 (#192)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| GPQA Diamond | 93.4% | 62.4% |
| LMArena Expert | 1466 | 1316 |
| SimpleQA Verified | 48.3% | — |
| Confabulations | — | 18.6% |
Multimodal Not comparable
Grok 4.5: 37.6 (#72), o1-mini: —
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| LMArena Vision | 1288 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |
Multilingual Grok 4.5 leads
Grok 4.5: 54.4 (#42), o1-mini: 43.6 (#182)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| LMArena Non-English | 1440 | 1289 |
| LMArena Chinese | 1496 | 1314 |
| LMArena French | 1456 | 1293 |
| LMArena German | 1446 | 1278 |
| LMArena Japanese | 1428 | 1245 |
| LMArena Korean | 1404 | 1223 |
| LMArena Russian | 1448 | 1283 |
| LMArena Spanish | 1450 | 1303 |
Instruction Following Grok 4.5 leads
Grok 4.5: 76.0 (#48), o1-mini: 66.7 (#206)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1446 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
Long Context Grok 4.5 leads
Grok 4.5: 44.8 (#56), o1-mini: 40.1 (#161)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| LMArena Longer Query | 1463 | 1320 |
Writing & Preference Grok 4.5 leads
Grok 4.5: 65.8 (#42), o1-mini: 48.4 (#202)
| Benchmark | Grok 4.5 | o1-mini |
|---|---|---|
| LMArena Text | 1448 | 1317 |
| LMArena Creative Writing | 1442 | 1244 |
| LMArena Multi-Turn | 1456 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| EQ-Bench Creative Writing | 1579 | — |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is Grok 4.5 better than o1-mini?
Grok 4.5 is the stronger model overall, scoring 55.0 to 34.0 on the Noometry Index.
Is Grok 4.5 or o1-mini better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 35.5 in the Noometry coding category.
How many benchmarks do Grok 4.5 and o1-mini share?
24 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and o1-mini has 39.