Model comparison
Claude Sonnet 4.5 vs Nova 2.0 Pro Preview
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 33.4 on the Noometry Index.
Last verified . 2 shared benchmarks.
Summary
- They share 2 benchmarks with published results for both. Claude Sonnet 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 agentic & tool use, where Claude Sonnet 4.5 leads 38.3 to 21.9.
Side by side
| Claude Sonnet 4.5 | Nova 2.0 Pro Preview | |
|---|---|---|
| Provider | Anthropic | Amazon |
| Noometry Index | 44.1 | 33.4 |
| Released | 2025-09-29 | 2025-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 64K | — |
| Input $ / M tokens | $3 | — |
| Output $ / M tokens | $15 | — |
| Results tracked | 73 | 3 |
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Category by category
Coding Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 47.3 (#61), Nova 2.0 Pro Preview: 40.8 (#133)
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| SciCode | 44.7% | 42.7% |
| SWE-bench Verified | 71.3% | — |
| SWE-bench Verified (bash only) | 71.4% | — |
| LMArena WebDev | 1393 | — |
| SWE-bench Multilingual | 67% | — |
| GSO | 14.7% | — |
| WeirdML | 47.7% | — |
| LMArena Coding | 1489 | — |
| ALE-Bench | 796.15 | — |
| AlgoTune | 1.52 | — |
Agentic & Tool Use Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 38.3 (#32), Nova 2.0 Pro Preview: 21.9 (#136)
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| Terminal-Bench | 46.5% | — |
| Berkeley Function Calling Leaderboard | 73.2% | — |
| GDPval | 42.5% | — |
| Remote Labor Index | 2.1% | — |
| τ²-bench Airline | 72% | — |
| τ²-bench Banking | 25.3% | — |
| τ²-bench Retail | 72.4% | — |
| τ²-bench Telecom | 84.9% | — |
| Cybench | 60% | — |
| DeepResearch Bench | 52.6% | — |
| OSWorld | 62.9% | — |
| GDP.pdf | — | 2% |
| LMArena Search | 1159 | — |
| METR Time Horizons | 67.4% | — |
| Vending-Bench 2 | 3,839 | — |
Reasoning Claude Sonnet 4.5 leads
Claude Sonnet 4.5: 26.9 (#125), Nova 2.0 Pro Preview: 22.4 (#194)
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| CritPt | 1.1% | 0% |
| ARC-AGI-2 | 13.6% | — |
| SimpleBench | 54.3% | — |
| Kagi LLM Benchmark | 57.9% | — |
| NYT Connections (extended) | 37.3% | — |
| ARC-AGI-1 | 63.7% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 6% | — |
| EBR-Bench | 2.4% | — |
| LMArena Hard Prompts | 1462 | — |
| Mystery Game Puzzles | 17% | — |
| DTBench | 83.2% | — |
| LMCA | 38.8% | — |
| Epoch Capabilities Index | 146.84 | — |
| ForecastBench | 61.9 | — |
Math Not comparable
Claude Sonnet 4.5: 32.3 (#216), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| FrontierMath (Tiers 1-3) | 23.9% | — |
| FrontierMath Tier 4 | 2.4% | — |
| OTIS Mock AIME 2024-2025 | 77.8% | — |
| ProofBench | 19% | — |
| Omni-MATH | 55.3% | — |
| LMArena Math | 1449 | — |
| MATH Level 5 | 97.7% | — |
| FrontierMath (Feb 2025 set) | 15.2% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Claude Sonnet 4.5: 48.4 (#76), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| GPQA Diamond | 82.3% | — |
| Humanity's Last Exam | 13.7% | — |
| SimpleQA Verified | 30.7% | — |
| MMLU-Pro | 86.9% | — |
| Vectara Hallucination Rate | 12% | — |
| GPQA (HELM) | 68.6% | — |
| LMArena Expert | 1482 | — |
Multimodal Not comparable
Claude Sonnet 4.5: 34.8 (#89), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| VPCT | 39.8% | — |
| LMArena Document | 1450 | — |
Multilingual Not comparable
Claude Sonnet 4.5: 53.4 (#69), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Non-English | 1425 | — |
| LMArena Chinese | 1459 | — |
| LMArena French | 1458 | — |
| LMArena German | 1427 | — |
| LMArena Japanese | 1390 | — |
| LMArena Korean | 1403 | — |
| LMArena Russian | 1437 | — |
| LMArena Spanish | 1457 | — |
Instruction Following Not comparable
Claude Sonnet 4.5: 75.0 (#78), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| IFEval | 85% | — |
| LMArena Instruction Following | 1459 | — |
Long Context Not comparable
Claude Sonnet 4.5: 45.2 (#46), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Longer Query | 1476 | — |
Writing & Preference Not comparable
Claude Sonnet 4.5: 66.5 (#34), Nova 2.0 Pro Preview: —
| Benchmark | Claude Sonnet 4.5 | Nova 2.0 Pro Preview |
|---|---|---|
| LMArena Text | 1439 | — |
| LMArena Creative Writing | 1442 | — |
| EQ-Bench Creative Writing | 1678 | — |
| WildBench | 85.4% | — |
| LMArena Multi-Turn | 1465 | — |
Frequently asked questions
Is Claude Sonnet 4.5 better than Nova 2.0 Pro Preview?
Claude Sonnet 4.5 is the stronger model overall, scoring 44.1 to 33.4 on the Noometry Index.
Is Claude Sonnet 4.5 or Nova 2.0 Pro Preview better for coding?
Claude Sonnet 4.5 scores higher on coding benchmarks: 47.3 versus 40.8 in the Noometry coding category.
How many benchmarks do Claude Sonnet 4.5 and Nova 2.0 Pro Preview share?
2 benchmarks have published results for both models. Claude Sonnet 4.5 has 73 scored results on Noometry and Nova 2.0 Pro Preview has 3.