Model comparison
Grok 4.5 vs Nova 2.0 Pro Preview
Grok 4.5 is the stronger model overall, scoring 55.0 to 33.4 on the Noometry Index.
Last verified . 3 shared benchmarks.
Summary
- They share 3 benchmarks with published results for both. Grok 4.5 scores higher in 3 categories and Nova 2.0 Pro Preview in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 22.4.
- The biggest single-benchmark swing is CritPt: 15.4% for Grok 4.5 and 0% for Nova 2.0 Pro Preview.
Side by side
| Grok 4.5 | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | xAI | Amazon |
| Noometry Index | 55.0 | 33.4 |
| Released | 2026-07-08 | 2025-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 500K | — |
| Max output | 500K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $6 | — |
| Results tracked | 52 | 3 |
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Category by category
Coding Grok 4.5 leads
Grok 4.5: 52.2 (#35), Nova 2.0 Pro Preview: 40.8 (#133)
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | 54.1% | 42.7% |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1553 | — |
| WeirdML | 46.4% | — |
| LMArena Coding | 1474 | — |
| ALE-Bench | 1,309 | — |
Agentic & Tool Use Grok 4.5 leads
Grok 4.5: 44.4 (#17), Nova 2.0 Pro Preview: 21.9 (#136)
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| GDP.pdf | 14% | 2% |
| APEX-Agents | 56.2% | — |
| τ²-bench Banking | 47.9% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| LMArena Search | 1213 | — |
| Vending-Bench 2 | 3,887 | — |
Reasoning Grok 4.5 leads
Grok 4.5: 56.1 (#25), Nova 2.0 Pro Preview: 22.4 (#194)
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 15.4% | 0% |
| ARC-AGI-2 | 52.6% | — |
| SimpleBench | 70% | — |
| Kagi LLM Benchmark | 83.5% | — |
| NYT Connections (extended) | 79.9% | — |
| ARC-AGI-1 | 87.2% | — |
| Chess Puzzles | 36% | — |
| LMArena Hard Prompts | 1462 | — |
| DTBench | 96.5% | — |
| LMCA | 45.2% | — |
| Surface Evolver Bench | 74.4% | — |
| Epoch Capabilities Index | 153.92 | — |
Math Not comparable
Grok 4.5: 60.9 (#35), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| OTIS Mock AIME 2024-2025 | 97.8% | — |
| ProofBench | 31% | — |
| LMArena Math | 1459 | — |
Knowledge Not comparable
Grok 4.5: 62.3 (#24), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 93.4% | — |
| SimpleQA Verified | 48.3% | — |
| LMArena Expert | 1466 | — |
Multimodal Not comparable
Grok 4.5: 37.6 (#72), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Vision | 1288 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |
Multilingual Not comparable
Grok 4.5: 54.4 (#42), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1440 | — |
| LMArena Chinese | 1496 | — |
| LMArena French | 1456 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1428 | — |
| LMArena Korean | 1404 | — |
| LMArena Russian | 1448 | — |
| LMArena Spanish | 1450 | — |
Instruction Following Not comparable
Grok 4.5: 76.0 (#48), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Instruction Following | 1446 | — |
Long Context Not comparable
Grok 4.5: 44.8 (#56), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Longer Query | 1463 | — |
Writing & Preference Not comparable
Grok 4.5: 65.8 (#42), Nova 2.0 Pro Preview: —
| Benchmark | Grok 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1448 | — |
| LMArena Creative Writing | 1442 | — |
| EQ-Bench Creative Writing | 1579 | — |
| LMArena Multi-Turn | 1456 | — |
Frequently asked questions
Is Grok 4.5 better than Nova 2.0 Pro Preview?
Grok 4.5 is the stronger model overall, scoring 55.0 to 33.4 on the Noometry Index.
Is Grok 4.5 or Nova 2.0 Pro Preview better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 40.8 in the Noometry coding category.
How many benchmarks do Grok 4.5 and Nova 2.0 Pro Preview share?
3 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Nova 2.0 Pro Preview has 3.