Model comparison
Grok 4 vs o3-pro
Grok 4 is the stronger model overall, scoring 48.1 to 42.9 on the Noometry Index.
Last verified . 9 shared benchmarks.
Summary
- They share 9 benchmarks with published results for both. Grok 4 scores higher in 3 categories and o3-pro in 2 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 4 leads 53.8 to 29.5.
- The biggest single-benchmark swing is WeirdML: 45.7% for Grok 4 and 58.2% for o3-pro.
Side by side
| Grok 4 | o3-pro | |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 48.1 | 42.9 |
| Released | 2025-07-09 | 2025-06-10 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 48 | 12 |
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Category by category
Coding o3-pro leads
Grok 4: 50.3 (#46), o3-pro: 55.5 (#24)
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| Aider Polyglot | 79.6% | 84.9% |
| WeirdML | 45.7% | 58.2% |
| LMArena Coding | 1408 | — |
Agentic & Tool Use Not comparable
Grok 4: 32.3 (#68), o3-pro: —
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| Terminal-Bench | 27.2% | — |
| Berkeley Function Calling Leaderboard | 63% | — |
| GDPval | 21.1% | — |
| Cybench | 43% | — |
| DeepResearch Bench | 47.3% | — |
| BALROG | 43.6% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 66.6% | — |
Reasoning Grok 4 leads
Grok 4: 36.7 (#65), o3-pro: 23.8 (#171)
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| ARC-AGI-2 | 16% | 4.9% |
| Kagi LLM Benchmark | 73.6% | 72.1% |
| ARC-AGI-1 | 66.7% | 59.3% |
| Epoch Capabilities Index | 146.44 | 147.42 |
| SimpleBench | 60.5% | — |
| Chess Puzzles | 28% | — |
| LMArena Hard Prompts | 1409 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| ForecastBench | 60.9 | — |
Math Not comparable
Grok 4: 48.4 (#64), o3-pro: —
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 84% | — |
| Omni-MATH | 60.3% | — |
| LMArena Math | 1422 | — |
| FrontierMath (Feb 2025 set) | 19.7% | — |
| FrontierMath Tier 4 (v1) | 2.1% | — |
Knowledge Grok 4 leads
Grok 4: 53.8 (#55), o3-pro: 29.5 (#238)
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| Confabulations | 12.4% | 14.2% |
| GPQA Diamond | 87% | — |
| MMLU-Pro | 85.1% | — |
| Vectara Hallucination Rate | — | 23.3% |
| GPQA (HELM) | 72.7% | — |
| LMArena Expert | 1415 | — |
Multimodal Not comparable
Grok 4: 33.7 (#94), o3-pro: —
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| LMArena Vision | 1210 | — |
| GeoBench | 45% | — |
Multilingual Not comparable
Grok 4: 51.8 (#103), o3-pro: —
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| LMArena Non-English | 1403 | — |
| LMArena Chinese | 1427 | — |
| LMArena French | 1418 | — |
| LMArena German | 1429 | — |
| LMArena Japanese | 1394 | — |
| LMArena Korean | 1377 | — |
| LMArena Russian | 1410 | — |
| LMArena Spanish | 1420 | — |
Instruction Following Not comparable
Grok 4: 79.2 (#5), o3-pro: —
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| IFEval | 94.9% | — |
| LMArena Instruction Following | 1387 | — |
Long Context o3-pro leads
Grok 4: 63.1 (#4), o3-pro: 72.2 (#1)
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| Fiction.LiveBench | 94.4% | 97.2% |
| LMArena Longer Query | 1409 | — |
Writing & Preference Grok 4 leads
Grok 4: 58.5 (#116), o3-pro: 57.1 (#133)
| Benchmark | Grok 4 | o3-pro |
|---|---|---|
| Short-Story Creative Writing | 76.9% | 84.4% |
| LMArena Text | 1411 | — |
| LMArena Creative Writing | 1397 | — |
| WildBench | 79.7% | — |
| LMArena Multi-Turn | 1416 | — |
Frequently asked questions
Is Grok 4 better than o3-pro?
Grok 4 is the stronger model overall, scoring 48.1 to 42.9 on the Noometry Index.
Is Grok 4 or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 50.3 in the Noometry coding category.
How many benchmarks do Grok 4 and o3-pro share?
9 benchmarks have published results for both models. Grok 4 has 48 scored results on Noometry and o3-pro has 12.