Model comparison
Amazon Nova Experimental Chat 12 10 vs o3
o3 is the stronger model overall, scoring 47.5 to 42.9 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 1 category and o3 in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.6 to 39.2.
Side by side
| Amazon Nova Experimental Chat 12 10 | o3 | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.9 | 47.5 |
| Released | — | 2025-04-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $2 |
| Output $ / M tokens | — | $8 |
| Results tracked | 12 | 63 |
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Category by category
Coding o3 leads
Amazon Nova Experimental Chat 12 10: 42.2 (#110), o3: 46.8 (#64)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Coding | 1430 | 1408 |
| SWE-bench Verified | — | 62.3% |
| SWE-bench Verified (bash only) | — | 58.4% |
| Aider Polyglot | — | 81.3% |
| GSO | — | 8.8% |
| WeirdML | — | 52.4% |
| CadEval | — | 74% |
| ALE-Bench | — | 933.55 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 12 10: —, o3: 34.5 (#44)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 63% |
| GDPval | — | 30.8% |
| DeepResearch Bench | — | 45.2% |
| OSWorld | — | 23% |
| LMArena Search | — | 1144 |
| METR Time Horizons | — | 65.4% |
Reasoning o3 leads
Amazon Nova Experimental Chat 12 10: 29.3 (#94), o3: 32.0 (#78)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Hard Prompts | 1427 | 1402 |
| ARC-AGI-2 | — | 6.5% |
| SimpleBench | — | 53.1% |
| Kagi LLM Benchmark | — | 67.6% |
| ARC-AGI-1 | — | 60.8% |
| CritPt | — | 1.4% |
| Chess Puzzles | — | 38% |
| EnigmaEval | — | 13.1% |
| Mystery Game Puzzles | — | 29% |
| DTBench | — | 84.8% |
| LMCA | — | 39.7% |
| Epoch Capabilities Index | — | 146.86 |
| ForecastBench | — | 62.5 |
Math o3 leads
Amazon Nova Experimental Chat 12 10: 38.9 (#124), o3: 50.2 (#58)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Math | 1419 | 1426 |
| FrontierMath (Tiers 1-3) | — | 33.3% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| Omni-MATH | — | 71.4% |
| MATH Level 5 | — | 97.8% |
| FrontierMath (Feb 2025 set) | — | 18.7% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge o3 leads
Amazon Nova Experimental Chat 12 10: 39.2 (#136), o3: 54.6 (#52)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Expert | 1408 | 1402 |
| 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% |
Multimodal Not comparable
Amazon Nova Experimental Chat 12 10: —, o3: 41.4 (#36)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |
Multilingual Too close to call
Amazon Nova Experimental Chat 12 10: 51.4 (#108), o3: 51.7 (#105)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Non-English | 1398 | 1401 |
| LMArena Chinese | 1440 | 1437 |
| LMArena Russian | 1395 | 1406 |
| LMArena French | — | 1430 |
| LMArena German | — | 1420 |
| LMArena Japanese | — | 1403 |
| LMArena Korean | — | 1370 |
| LMArena Spanish | — | 1395 |
Instruction Following Too close to call
Amazon Nova Experimental Chat 12 10: 73.2 (#123), o3: 72.8 (#127)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Instruction Following | 1387 | 1368 |
| IFEval | — | 86.9% |
Long Context o3 leads
Amazon Nova Experimental Chat 12 10: 42.4 (#125), o3: 53.3 (#6)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Longer Query | 1391 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |
Writing & Preference o3 leads
Amazon Nova Experimental Chat 12 10: 59.5 (#110), o3: 63.5 (#64)
| Benchmark | Amazon Nova Experimental Chat 12 10 | o3 |
|---|---|---|
| LMArena Text | 1420 | 1410 |
| LMArena Creative Writing | 1350 | 1359 |
| LMArena Multi-Turn | 1409 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |
Frequently asked questions
Is Amazon Nova Experimental Chat 12 10 better than o3?
o3 is the stronger model overall, scoring 47.5 to 42.9 on the Noometry Index.
Is Amazon Nova Experimental Chat 12 10 or o3 better for coding?
o3 scores higher on coding benchmarks: 46.8 versus 42.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 12 10 and o3 share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and o3 has 63.