Model comparison
Amazon Nova Pro vs Claude Opus 4.1
Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 30.5 on the Noometry Index. Amazon Nova Pro costs 21× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.
Last verified . 22 shared benchmarks.
Summary
- They share 22 benchmarks with published results for both. Amazon Nova Pro scores higher in 1 category and Claude Opus 4.1 in 9 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Claude Opus 4.1 leads 62.6 to 44.1.
- The biggest single-benchmark swing is Short-Story Creative Writing: 60.5% for Amazon Nova Pro and 84.7% for Claude Opus 4.1.
- Amazon Nova Pro is cheaper at $0.80 / $3.20 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
- Amazon Nova Pro accepts more context: 300K tokens versus 200K.
Side by side
| Amazon Nova Pro | Claude Opus 4.1 | |
|---|---|---|
| Provider | Amazon | Anthropic |
| Noometry Index | 30.5 | 40.8 |
| Released | 2024-12-03 | 2025-08-05 |
| Weights | Proprietary | Proprietary |
| Context window | 300K | 200K |
| Max output | 10K | 32K |
| Input $ / M tokens | $0.80 | $15 |
| Output $ / M tokens | $3.20 | $75 |
| Results tracked | 38 | 48 |
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Category by category
Coding Claude Opus 4.1 leads
Amazon Nova Pro: 34.6 (#224), Claude Opus 4.1: 44.3 (#69)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Coding | 1270 | 1479 |
| SWE-bench Verified | — | 73.3% |
| LMArena WebDev | — | 1390 |
| WeirdML | — | 45.9% |
| LiveBench Coding | 38.1% | — |
| ALE-Bench | — | 674.77 |
| AlgoTune | — | 1.34 |
Agentic & Tool Use Claude Opus 4.1 leads
Amazon Nova Pro: 16.6 (#139), Claude Opus 4.1: 34.8 (#38)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| Terminal-Bench | — | 38% |
| Berkeley Function Calling Leaderboard | 25% | — |
| GDPval | — | 43.6% |
| TheAgentCompany | 1.7% | — |
| Cybench | — | 42% |
| DeepResearch Bench | — | 48.3% |
| LMArena Search | — | 1148 |
| METR Time Horizons | — | 66.8% |
Reasoning Claude Opus 4.1 leads
Amazon Nova Pro: 19.2 (#240), Claude Opus 4.1: 31.6 (#70)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1443 |
| Epoch Capabilities Index | 123.75 | 144.11 |
| SimpleBench | — | 60% |
| Chess Puzzles | — | 7% |
| EnigmaEval | — | 7.2% |
| EBR-Bench | — | 7.9% |
| LiveBench Reasoning | 32.6% | — |
| Mystery Game Puzzles | — | 21% |
| DTBench | — | 80% |
| LiveBench Data Analysis | 48.3% | — |
| LMCA | — | 37.1% |
| ForecastBench | — | 62 |
| LiveBench | 43.5% | — |
Math Amazon Nova Pro leads
Amazon Nova Pro: 26.4 (#240), Claude Opus 4.1: 22.0 (#267)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Math | 1252 | 1430 |
| FrontierMath (Tiers 1-3) | — | 12.6% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.9% |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |
| FrontierMath (Feb 2025 set) | — | 7.2% |
| FrontierMath Tier 4 (v1) | — | 4.2% |
Knowledge Claude Opus 4.1 leads
Amazon Nova Pro: 27.1 (#246), Claude Opus 4.1: 41.9 (#93)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| Humanity's Last Exam | 4.4% | 11.5% |
| Confabulations | 30.1% | 17.1% |
| Vectara Hallucination Rate | 5.1% | 11.8% |
| LMArena Expert | 1211 | 1439 |
| GPQA Diamond | — | 77.3% |
| MMLU-Pro | 67.3% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |
Multimodal Claude Opus 4.1 leads
Amazon Nova Pro: 24.5 (#121), Claude Opus 4.1: 26.2 (#114)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Vision | 980 | — |
| VPCT | — | 35% |
Multilingual Claude Opus 4.1 leads
Amazon Nova Pro: 39.9 (#218), Claude Opus 4.1: 52.1 (#90)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Non-English | 1234 | 1405 |
| LMArena Chinese | 1244 | 1427 |
| LMArena French | 1270 | 1432 |
| LMArena German | 1243 | 1412 |
| LMArena Japanese | 1200 | 1378 |
| LMArena Korean | 1203 | 1381 |
| LMArena Russian | 1240 | 1421 |
| LMArena Spanish | 1182 | 1448 |
Instruction Following Claude Opus 4.1 leads
Amazon Nova Pro: 65.1 (#221), Claude Opus 4.1: 75.8 (#53)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Instruction Following | 1235 | 1436 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |
Long Context Claude Opus 4.1 leads
Amazon Nova Pro: 38.1 (#199), Claude Opus 4.1: 44.5 (#60)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Longer Query | 1255 | 1455 |
Writing & Preference Claude Opus 4.1 leads
Amazon Nova Pro: 44.1 (#221), Claude Opus 4.1: 62.6 (#70)
| Benchmark | Amazon Nova Pro | Claude Opus 4.1 |
|---|---|---|
| LMArena Text | 1259 | 1419 |
| LMArena Creative Writing | 1212 | 1412 |
| Short-Story Creative Writing | 60.5% | 84.7% |
| LMArena Multi-Turn | 1245 | 1444 |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |
Frequently asked questions
Is Amazon Nova Pro better than Claude Opus 4.1?
Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 30.5 on the Noometry Index. Amazon Nova Pro costs 21× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.
Which is cheaper, Amazon Nova Pro or Claude Opus 4.1?
Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Claude Opus 4.1 lists at $15 and $75.
Is Amazon Nova Pro or Claude Opus 4.1 better for coding?
Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 34.6 in the Noometry coding category.
Which has the bigger context window?
Amazon Nova Pro does, with 300K tokens against 200K.
How many benchmarks do Amazon Nova Pro and Claude Opus 4.1 share?
22 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Claude Opus 4.1 has 48.