Model comparison
Amazon Nova Pro vs Claude Sonnet 5.5
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 31.0 on the Noometry Index. Amazon Nova Pro costs 2.9× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.
Last verified . 14 shared benchmarks.
Summary
- They share 14 benchmarks with published results for both. Amazon Nova Pro scores higher in 0 categories and Claude Sonnet 5.5 in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Sonnet 5.5 leads 87.9 to 28.5.
- Amazon Nova Pro is cheaper at $0.80 / $3.20 per million input/output tokens, against $2 / $10 for Claude Sonnet 5.5.
- Claude Sonnet 5.5 accepts more context: 1M tokens versus 300K.
Side by side
| Amazon Nova Pro | Claude Sonnet 5.5 | |
|---|---|---|
| Provider | Amazon | Anthropic |
| Noometry Index | 31.0 | 61.9 |
| Released | 2024-12-03 | 2026-09-28 |
| Weights | Proprietary | Proprietary |
| Context window | 300K | 1M |
| Max output | 10K | 128K |
| Input $ / M tokens | $0.80 | $2 |
| Output $ / M tokens | $3.20 | $10 |
| Results tracked | 38 | 32 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Sonnet 5.5 leads
Amazon Nova Pro: 35.1 (#229), Claude Sonnet 5.5: 67.3 (#6)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Coding | 1270 | 1513 |
| FrontierCode | — | 52.1% |
| CursorBench | — | 55.5% |
| LMArena WebDev | — | 1774 |
| FrontierSWE | — | 61.9% |
| SciCode | — | 61% |
| LiveBench Coding | 38.1% | — |
| ALE-Bench | — | 1,819 |
Agentic & Tool Use Claude Sonnet 5.5 leads
Amazon Nova Pro: 16.7 (#147), Claude Sonnet 5.5: 45.0 (#16)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| APEX-Agents | — | 75.5% |
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |
Reasoning Claude Sonnet 5.5 leads
Amazon Nova Pro: 20.0 (#243), Claude Sonnet 5.5: 54.0 (#28)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1495 |
| Epoch Capabilities Index | 123.8 | 165.03 |
| NYT Connections (extended) | — | 80.5% |
| CritPt | — | 31.4% |
| LiveBench Reasoning | 32.6% | — |
| Mystery Game Puzzles | — | 65% |
| LiveBench Data Analysis | 48.3% | — |
| LiveBench | 43.5% | — |
Math Claude Sonnet 5.5 leads
Amazon Nova Pro: 28.5 (#243), Claude Sonnet 5.5: 87.9 (#6)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Math | 1252 | 1510 |
| FrontierMath (Tiers 1-3) | — | 88.8% |
| FrontierMath Tier 4 | — | 80.5% |
| OTIS Mock AIME 2024-2025 | — | 100% |
| ProofBench | — | 100% |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |
| FrontierMath Erdős | — | 2.9% |
Knowledge Claude Sonnet 5.5 leads
Amazon Nova Pro: 27.4 (#250), Claude Sonnet 5.5: 66.0 (#12)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Expert | 1211 | 1540 |
| GPQA Diamond | — | 95.6% |
| Humanity's Last Exam | 4.4% | — |
| SimpleQA Verified | — | 46.5% |
| MMLU-Pro | 67.3% | — |
| Confabulations | 30.1% | — |
| Vectara Hallucination Rate | 5.1% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |
Multimodal Claude Sonnet 5.5 leads
Amazon Nova Pro: 25.0 (#126), Claude Sonnet 5.5: 51.5 (#6)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Vision | 980 | 1289 |
| Furniture Assembly | — | 75% |
Multilingual Claude Sonnet 5.5 leads
Amazon Nova Pro: 39.7 (#223), Claude Sonnet 5.5: 55.3 (#30)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Non-English | 1234 | 1452 |
| LMArena Chinese | 1244 | 1522 |
| LMArena Russian | 1240 | 1451 |
| LMArena French | 1271 | — |
| LMArena German | 1243 | — |
| LMArena Japanese | 1200 | — |
| LMArena Korean | 1203 | — |
| LMArena Spanish | 1182 | — |
Instruction Following Claude Sonnet 5.5 leads
Amazon Nova Pro: 64.9 (#226), Claude Sonnet 5.5: 78.3 (#11)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Instruction Following | 1235 | 1495 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |
Long Context Claude Sonnet 5.5 leads
Amazon Nova Pro: 38.1 (#205), Claude Sonnet 5.5: 45.9 (#28)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Longer Query | 1255 | 1498 |
Writing & Preference Claude Sonnet 5.5 leads
Amazon Nova Pro: 43.9 (#226), Claude Sonnet 5.5: 66.0 (#40)
| Benchmark | Amazon Nova Pro | Claude Sonnet 5.5 |
|---|---|---|
| LMArena Text | 1259 | 1471 |
| LMArena Creative Writing | 1212 | 1465 |
| LMArena Multi-Turn | 1246 | 1474 |
| Short-Story Creative Writing | 60.5% | — |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |
Frequently asked questions
Is Amazon Nova Pro better than Claude Sonnet 5.5?
Claude Sonnet 5.5 is the stronger model overall, scoring 61.9 to 31.0 on the Noometry Index. Amazon Nova Pro costs 2.9× less per token, which makes it the better buy when Claude Sonnet 5.5's lead doesn't matter for your workload.
Which is cheaper, Amazon Nova Pro or Claude Sonnet 5.5?
Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Claude Sonnet 5.5 lists at $2 and $10.
Is Amazon Nova Pro or Claude Sonnet 5.5 better for coding?
Claude Sonnet 5.5 scores higher on coding benchmarks: 67.3 versus 35.1 in the Noometry coding category.
Which has the bigger context window?
Claude Sonnet 5.5 does, with 1M tokens against 300K.
How many benchmarks do Amazon Nova Pro and Claude Sonnet 5.5 share?
14 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Claude Sonnet 5.5 has 32.