Model comparison
Amazon Nova Experimental Chat 10 20 vs o3
o3 is the stronger model overall, scoring 47.5 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 0 categories and o3 in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where o3 leads 54.6 to 38.5.
Side by side
| Amazon Nova Experimental Chat 10 20 | o3 | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.1 | 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 | 17 | 63 |
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Category by category
Coding o3 leads
Amazon Nova Experimental Chat 10 20: 41.6 (#123), o3: 46.8 (#64)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Coding | 1412 | 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 10 20: —, o3: 34.5 (#44)
| Benchmark | Amazon Nova Experimental Chat 10 20 | 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 10 20: 28.4 (#106), o3: 32.0 (#78)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Hard Prompts | 1396 | 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 10 20: 39.0 (#119), o3: 50.2 (#58)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Math | 1425 | 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 10 20: 38.5 (#144), o3: 54.6 (#52)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Expert | 1386 | 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 10 20: —, o3: 41.4 (#36)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Vision | — | 1214 |
| GeoBench | — | 74% |
| VPCT | — | 52% |
Multilingual o3 leads
Amazon Nova Experimental Chat 10 20: 49.5 (#131), o3: 51.7 (#105)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Non-English | 1372 | 1401 |
| LMArena Chinese | 1404 | 1437 |
| LMArena French | 1425 | 1430 |
| LMArena German | 1391 | 1420 |
| LMArena Japanese | 1360 | 1403 |
| LMArena Korean | 1324 | 1370 |
| LMArena Russian | 1371 | 1406 |
| LMArena Spanish | 1382 | 1395 |
Instruction Following Too close to call
Amazon Nova Experimental Chat 10 20: 72.1 (#141), o3: 72.8 (#127)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Instruction Following | 1365 | 1368 |
| IFEval | — | 86.9% |
Long Context o3 leads
Amazon Nova Experimental Chat 10 20: 41.7 (#133), o3: 53.3 (#6)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Longer Query | 1370 | 1372 |
| Fiction.LiveBench | — | 88.9% |
| CL-bench | — | 17.8% |
Writing & Preference o3 leads
Amazon Nova Experimental Chat 10 20: 56.6 (#136), o3: 63.5 (#64)
| Benchmark | Amazon Nova Experimental Chat 10 20 | o3 |
|---|---|---|
| LMArena Text | 1394 | 1410 |
| LMArena Creative Writing | 1318 | 1359 |
| LMArena Multi-Turn | 1364 | 1405 |
| Short-Story Creative Writing | — | 83.9% |
| EQ-Bench Creative Writing | — | 1676 |
| WildBench | — | 86.1% |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than o3?
o3 is the stronger model overall, scoring 47.5 to 42.1 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or o3 better for coding?
o3 scores higher on coding benchmarks: 46.8 versus 41.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and o3 share?
17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and o3 has 63.