Model comparison
Amazon Nova Experimental Chat 10 09 vs Claude Opus 4.1
Amazon Nova Experimental Chat 10 09 and Claude Opus 4.1 score almost the same on the Noometry Index (41.9 vs 41.0), so choose on price, context window or the category you care about most.
Last verified . 9 shared benchmarks.
Summary
- They share 9 benchmarks with published results for both. Amazon Nova Experimental Chat 10 09 scores higher in 0 categories and Claude Opus 4.1 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.4 to 54.7.
Side by side
| Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 | |
|---|---|---|
| Provider | Amazon | Anthropic |
| Noometry Index | 41.9 | 41.0 |
| Released | — | 2025-08-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 32K |
| Input $ / M tokens | — | $15 |
| Output $ / M tokens | — | $75 |
| Results tracked | 9 | 48 |
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Category by category
Coding Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 40.2 (#145), Claude Opus 4.1: 44.4 (#73)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Coding | 1370 | 1479 |
| SWE-bench Verified | — | 73.3% |
| LMArena WebDev | — | 1390 |
| WeirdML | — | 45.9% |
| ALE-Bench | — | 674.77 |
| AlgoTune | — | 1.34 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 09: —, Claude Opus 4.1: 35.0 (#41)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| Terminal-Bench | — | 38% |
| GDPval | — | 43.6% |
| Cybench | — | 42% |
| DeepResearch Bench | — | 48.3% |
| LMArena Search | — | 1148 |
| METR Time Horizons | — | 66.8% |
Reasoning Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 27.3 (#120), Claude Opus 4.1: 32.2 (#76)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1443 |
| SimpleBench | — | 60% |
| Chess Puzzles | — | 7% |
| EnigmaEval | — | 7.2% |
| EBR-Bench | — | 7.9% |
| Mystery Game Puzzles | — | 21% |
| DTBench | — | 80% |
| LMCA | — | 37.1% |
| Epoch Capabilities Index | — | 144.12 |
| ForecastBench | — | 62 |
Math Not comparable
Amazon Nova Experimental Chat 10 09: —, Claude Opus 4.1: 22.3 (#277)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 12.6% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.9% |
| LMArena Math | — | 1431 |
| FrontierMath (Feb 2025 set) | — | 7.2% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge Not comparable
Amazon Nova Experimental Chat 10 09: —, Claude Opus 4.1: 42.0 (#101)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| GPQA Diamond | — | 77.3% |
| Humanity's Last Exam | — | 11.5% |
| Confabulations | — | 17.1% |
| Vectara Hallucination Rate | — | 11.8% |
| LMArena Expert | — | 1439 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 09: —, Claude Opus 4.1: 26.8 (#119)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| VPCT | — | 35% |
Multilingual Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 47.3 (#150), Claude Opus 4.1: 52.0 (#95)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Non-English | 1340 | 1405 |
| LMArena Chinese | 1341 | 1427 |
| LMArena French | — | 1431 |
| LMArena German | — | 1413 |
| LMArena Japanese | — | 1378 |
| LMArena Korean | — | 1380 |
| LMArena Russian | — | 1422 |
| LMArena Spanish | — | 1448 |
Instruction Following Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 69.4 (#172), Claude Opus 4.1: 75.6 (#58)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Instruction Following | 1315 | 1435 |
Long Context Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 40.5 (#152), Claude Opus 4.1: 44.5 (#63)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Longer Query | 1333 | 1455 |
Writing & Preference Claude Opus 4.1 leads
Amazon Nova Experimental Chat 10 09: 54.7 (#149), Claude Opus 4.1: 62.4 (#74)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Claude Opus 4.1 |
|---|---|---|
| LMArena Text | 1364 | 1419 |
| LMArena Creative Writing | 1307 | 1412 |
| LMArena Multi-Turn | 1355 | 1444 |
| Short-Story Creative Writing | — | 84.7% |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than Claude Opus 4.1?
Amazon Nova Experimental Chat 10 09 and Claude Opus 4.1 score almost the same on the Noometry Index (41.9 vs 41.0), so choose on price, context window or the category you care about most.
Is Amazon Nova Experimental Chat 10 09 or Claude Opus 4.1 better for coding?
Claude Opus 4.1 scores higher on coding benchmarks: 44.4 versus 40.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 09 and Claude Opus 4.1 share?
9 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and Claude Opus 4.1 has 48.