Model comparison
Amazon Nova Pro vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 31.0 on the Noometry Index.
Last verified . 14 shared benchmarks.
StepFunSummary
- They share 14 benchmarks with published results for both. Amazon Nova Pro scores higher in 0 categories and Step 5 Preview in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 20.0.
- Both cost about the same: $0.80 input and $3.20 output per million tokens.
- Step 5 Preview accepts more context: 1.02M tokens versus 300K.
Side by side
| Amazon Nova Pro | Step 5 Preview | |
|---|---|---|
| Provider | Amazon | StepFun |
| Noometry Index | 31.0 | 47.9 |
| Released | 2024-12-03 | 2026-09-16 |
| Weights | Proprietary | Proprietary |
| Context window | 300K | 1.02M |
| Max output | 10K | 66K |
| Input $ / M tokens | $0.80 | $1 |
| Output $ / M tokens | $3.20 | $2.70 |
| Results tracked | 38 | 18 |
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Category by category
Coding Step 5 Preview leads
Amazon Nova Pro: 35.1 (#229), Step 5 Preview: 51.8 (#36)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1270 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
| LiveBench Coding | 38.1% | — |
Agentic & Tool Use Not comparable
Amazon Nova Pro: 16.7 (#147), Step 5 Preview: —
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |
Reasoning Step 5 Preview leads
Amazon Nova Pro: 20.0 (#243), Step 5 Preview: 40.0 (#57)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1465 |
| CritPt | — | 20.9% |
| LiveBench Reasoning | 32.6% | — |
| LiveBench Data Analysis | 48.3% | — |
| Epoch Capabilities Index | 123.8 | — |
| LiveBench | 43.5% | — |
Math Step 5 Preview leads
Amazon Nova Pro: 28.5 (#243), Step 5 Preview: 46.1 (#72)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Math | 1252 | 1470 |
| ProofBench | — | 42% |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |
Knowledge Step 5 Preview leads
Amazon Nova Pro: 27.4 (#250), Step 5 Preview: 41.2 (#112)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1211 | 1470 |
| Humanity's Last Exam | 4.4% | — |
| MMLU-Pro | 67.3% | — |
| Confabulations | 30.1% | — |
| Vectara Hallucination Rate | 5.1% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |
Multimodal Step 5 Preview leads
Amazon Nova Pro: 25.0 (#126), Step 5 Preview: 41.0 (#41)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Vision | 980 | 1267 |
Multilingual Step 5 Preview leads
Amazon Nova Pro: 39.7 (#223), Step 5 Preview: 53.8 (#54)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1234 | 1432 |
| LMArena Chinese | 1244 | 1519 |
| LMArena Russian | 1240 | 1436 |
| LMArena Spanish | 1182 | 1439 |
| LMArena French | 1271 | — |
| LMArena German | 1243 | — |
| LMArena Japanese | 1200 | — |
| LMArena Korean | 1203 | — |
Instruction Following Step 5 Preview leads
Amazon Nova Pro: 64.9 (#226), Step 5 Preview: 76.0 (#50)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1235 | 1444 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |
Long Context Step 5 Preview leads
Amazon Nova Pro: 38.1 (#205), Step 5 Preview: 44.5 (#64)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1255 | 1455 |
Writing & Preference Step 5 Preview leads
Amazon Nova Pro: 43.9 (#226), Step 5 Preview: 62.8 (#71)
| Benchmark | Amazon Nova Pro | Step 5 Preview |
|---|---|---|
| LMArena Text | 1259 | 1442 |
| LMArena Creative Writing | 1212 | 1410 |
| LMArena Multi-Turn | 1246 | 1447 |
| Short-Story Creative Writing | 60.5% | — |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |
Frequently asked questions
Is Amazon Nova Pro better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 31.0 on the Noometry Index.
Which is cheaper, Amazon Nova Pro or Step 5 Preview?
Amazon Nova Pro is cheaper. It lists at $0.80 per million input tokens and $3.20 per million output tokens; Step 5 Preview lists at $1 and $2.70.
Is Amazon Nova Pro or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 35.1 in the Noometry coding category.
Which has the bigger context window?
Step 5 Preview does, with 1.02M tokens against 300K.
How many benchmarks do Amazon Nova Pro and Step 5 Preview share?
14 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Step 5 Preview has 18.