Model comparison
Nova 2.0 Pro Preview vs o3
o3 is the stronger model overall, scoring 47.5 to 33.4 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. Nova 2.0 Pro Preview scores higher in 0 categories and o3 in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where o3 leads 34.5 to 21.9.
Side by side
| Nova 2.0 Pro Preview | o3 | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 33.4 | 47.5 |
| Released | 2025-12-02 | 2025-04-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $8 |
| Results tracked | 3 | 63 |
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Category by category
Coding o3 leads
Nova 2.0 Pro Preview: 40.8 (#133), o3: 46.8 (#64)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| SciCode | 42.7% | — |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| LMArena Coding | — | 1408 |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |
Agentic & Tool Use o3 leads
Nova 2.0 Pro Preview: 21.9 (#136), o3: 34.5 (#44)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| GDP.pdf | 2% | — |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |
Reasoning o3 leads
Nova 2.0 Pro Preview: 22.4 (#194), o3: 32.0 (#78)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| CritPt | 0% | 1.4% |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| LMArena Hard Prompts | — | 1402 |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.86 |
| ForecastBench | — | 62.5 |
Math Not comparable
Nova 2.0 Pro Preview: —, o3: 50.2 (#58)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 33.3% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| Omni-MATH | — | 71.4% |
| LMArena Math | — | 1426 |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Not comparable
Nova 2.0 Pro Preview: —, o3: 54.6 (#52)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| GPQA Diamond | — | 81.8% |
| Humanity's Last Exam | — | 20.3% |
| SimpleQA Verified | — | 49.4% |
| MMLU-Pro | — | 85.9% |
| Confabulations | — | 14.4% |
| GPQA (HELM) | — | 75.3% |
| LMArena Expert | — | 1402 |
Multimodal Not comparable
Nova 2.0 Pro Preview: —, o3: 41.4 (#36)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |
Multilingual Not comparable
Nova 2.0 Pro Preview: —, o3: 51.7 (#105)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| LMArena Non-English | — | 1401 |
| LMArena Chinese | — | 1437 |
| LMArena French | — | 1430 |
| LMArena German | — | 1420 |
| LMArena Japanese | — | 1403 |
| LMArena Korean | — | 1370 |
| LMArena Russian | — | 1406 |
| LMArena Spanish | — | 1395 |
Instruction Following Not comparable
Nova 2.0 Pro Preview: —, o3: 72.8 (#127)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| IFEval | — | 86.9% |
| LMArena Instruction Following | — | 1368 |
Long Context Not comparable
Nova 2.0 Pro Preview: —, o3: 53.3 (#6)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |
| LMArena Longer Query | — | 1372 |
Writing & Preference Not comparable
Nova 2.0 Pro Preview: —, o3: 63.5 (#64)
| Benchmark | Nova 2.0 Pro Preview | o3 |
|---|---|---|
| LMArena Text | — | 1410 |
| LMArena Creative Writing | — | 1359 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |
| LMArena Multi-Turn | — | 1405 |
Frequently asked questions
Is Nova 2.0 Pro Preview better than o3?
o3 is the stronger model overall, scoring 47.5 to 33.4 on the Noometry Index.
Is Nova 2.0 Pro Preview or o3 better for coding?
o3 scores higher on coding benchmarks: 46.8 versus 40.8 in the Noometry coding category.
How many benchmarks do Nova 2.0 Pro Preview and o3 share?
1 benchmark has published results for both models. Nova 2.0 Pro Preview has 3 scored results on Noometry and o3 has 63.