Model comparison
Grok 4.3 vs Nova 2.0 Pro Preview
Grok 4.3 is the stronger model overall, scoring 43.8 to 33.4 on the Noometry Index.
Last verified . 3 shared benchmarks.
Summary
- They share 3 benchmarks with published results for both. Grok 4.3 scores higher in 3 categories and Nova 2.0 Pro Preview in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.3 leads 35.9 to 22.4.
- The biggest single-benchmark swing is CritPt: 8% for Grok 4.3 and 0% for Nova 2.0 Pro Preview.
Side by side
| Grok 4.3 | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | xAI | Amazon |
| Noometry Index | 43.8 | 33.4 |
| Released | 2026-04-17 | 2025-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | — |
| Max output | 30K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $2.50 | — |
| Results tracked | 40 | 3 |
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Category by category
Coding Too close to call
Grok 4.3: 41.6 (#121), Nova 2.0 Pro Preview: 40.8 (#133)
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | 47.3% | 42.7% |
| LMArena WebDev | 1357 | — |
| WeirdML | 49.9% | — |
| LMArena Coding | 1415 | — |
| ALE-Bench | 944.17 | — |
Agentic & Tool Use Grok 4.3 leads
Grok 4.3: 27.7 (#99), Nova 2.0 Pro Preview: 21.9 (#136)
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| GDP.pdf | 8% | 2% |
| LMArena Search | 1165 | — |
| Vending-Bench 2 | 35.26 | — |
Reasoning Grok 4.3 leads
Grok 4.3: 35.9 (#68), Nova 2.0 Pro Preview: 22.4 (#194)
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 8% | 0% |
| NYT Connections (extended) | 55.2% | — |
| Chess Puzzles | 25% | — |
| LMArena Hard Prompts | 1396 | — |
| DTBench | 90.7% | — |
| LMCA | 38.3% | — |
| Epoch Capabilities Index | 149.16 | — |
| ForecastBench | 60.3 | — |
Math Not comparable
Grok 4.3: 46.0 (#74), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 42.8% | — |
| FrontierMath Tier 4 | 14.6% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 11% | — |
| LMArena Math | 1388 | — |
Knowledge Not comparable
Grok 4.3: 52.5 (#62), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 88.8% | — |
| SimpleQA Verified | 33.2% | — |
| LMArena Expert | 1385 | — |
Multimodal Not comparable
Grok 4.3: 31.6 (#104), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Vision | 1229 | — |
| Blueprint-Bench 2 | 0% | — |
Multilingual Not comparable
Grok 4.3: 50.5 (#120), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1385 | — |
| LMArena Chinese | 1422 | — |
| LMArena French | 1412 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1379 | — |
| LMArena Korean | 1356 | — |
| LMArena Russian | 1399 | — |
| LMArena Spanish | 1398 | — |
Instruction Following Not comparable
Grok 4.3: 72.1 (#140), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Instruction Following | 1366 | — |
Long Context Not comparable
Grok 4.3: 42.5 (#123), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Longer Query | 1393 | — |
Writing & Preference Not comparable
Grok 4.3: 58.5 (#118), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.3 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1397 | — |
| LMArena Creative Writing | 1380 | — |
| EQ-Bench 4 | 1075 | — |
| LMArena Multi-Turn | 1406 | — |
Frequently asked questions
Is Grok 4.3 better than Nova 2.0 Pro Preview?
Grok 4.3 is the stronger model overall, scoring 43.8 to 33.4 on the Noometry Index.
Is Grok 4.3 or Nova 2.0 Pro Preview better for coding?
They score almost the same on coding (41.6 vs 40.8); test both on your own repository before choosing.
How many benchmarks do Grok 4.3 and Nova 2.0 Pro Preview share?
3 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Nova 2.0 Pro Preview has 3.