Model comparison
Grok 4.3 vs o1-pro
Grok 4.3 is the stronger model overall, scoring 43.6 to 31.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 29.3.
- Grok 4.3 is cheaper at $1.25 / $2.50 per million input/output tokens, against $150 / $600 for o1-pro.
- Grok 4.3 accepts more context: 1M tokens versus 200K.
Side by side
| Grok 4.3 | o1-pro | |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 43.6 | 31.2 |
| Released | 2026-04-17 | 2025-03-19 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 200K |
| Max output | 30K | 100K |
| Input $ / M tokens | $1.25 | $150 |
| Output $ / M tokens | $2.50 | $600 |
| Results tracked | 40 | 3 |
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Category by category
Coding Not comparable
Grok 4.3: 41.3 (#117), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena WebDev | 1357 | — |
| SciCode | 47.3% | — |
| WeirdML | 49.9% | — |
| LMArena Coding | 1415 | — |
| ALE-Bench | 944.17 | — |
Agentic & Tool Use Not comparable
Grok 4.3: 27.6 (#93), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| GDP.pdf | 8% | — |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |
Reasoning Grok 4.3 leads
Grok 4.3: 34.9 (#60), o1-pro: 20.2 (#223)
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| NYT Connections (extended) | 55.2% | — |
| ARC-AGI-1 | — | 23.3% |
| CritPt | 8% | — |
| Chess Puzzles | 25% | — |
| EnigmaEval | — | 6.1% |
| LMArena Hard Prompts | 1397 | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.13 | — |
| ForecastBench | 60.3 | — |
Math Not comparable
Grok 4.3: 45.8 (#60), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 11% | — |
| LMArena Math | 1388 | — |
Knowledge Grok 4.3 leads
Grok 4.3: 52.5 (#57), o1-pro: 29.3 (#227)
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| GPQA Diamond | 88.8% | — |
| Humanity's Last Exam | — | 8.1% |
| SimpleQA Verified | 33.2% | — |
| LMArena Expert | 1385 | — |
Multimodal Not comparable
Grok 4.3: 31.6 (#96), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena Vision | 1231 | — |
| Blueprint-Bench 2 | 0% | — |
Multilingual Not comparable
Grok 4.3: 50.7 (#114), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena Non-English | 1385 | — |
| LMArena Chinese | 1423 | — |
| LMArena French | 1412 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1379 | — |
| LMArena Korean | 1357 | — |
| LMArena Russian | 1399 | — |
| LMArena Spanish | 1402 | — |
Instruction Following Not comparable
Grok 4.3: 72.3 (#135), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena Instruction Following | 1366 | — |
Long Context Not comparable
Grok 4.3: 42.5 (#118), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena Longer Query | 1393 | — |
Writing & Preference Not comparable
Grok 4.3: 58.6 (#112), o1-pro: —
| Benchmark | Grok 4.3 | o1-pro |
|---|---|---|
| LMArena Text | 1397 | — |
| LMArena Creative Writing | 1380 | — |
| EQ-Bench 4 | 1075 | — |
| LMArena Multi-Turn | 1406 | — |
Frequently asked questions
Is Grok 4.3 better than o1-pro?
Grok 4.3 is the stronger model overall, scoring 43.6 to 31.2 on the Noometry Index.
Which is cheaper, Grok 4.3 or o1-pro?
Grok 4.3 is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; o1-pro lists at $150 and $600.
Which has the bigger context window?
Grok 4.3 does, with 1M tokens against 200K.
How many benchmarks do Grok 4.3 and o1-pro share?
0 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and o1-pro has 3.