Model comparison
Amazon Nova Experimental Chat 26 02 10 vs Step 3.5 Flash
Amazon Nova Experimental Chat 26 02 10 is the stronger model overall, scoring 44.5 to 42.3 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 26 02 10 scores higher in 7 categories and Step 3.5 Flash in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Amazon Nova Experimental Chat 26 02 10 leads 30.1 to 22.2.
- Step 3.5 Flash has downloadable open weights; the other is API-only.
Side by side
| Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash | |
|---|---|---|
| Provider | Amazon | StepFun |
| Noometry Index | 44.5 | 42.3 |
| Released | — | 2026-01-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.30 |
| Results tracked | 12 | 19 |
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Category by category
Coding Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 43.9 (#82), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1483 | 1436 |
Reasoning Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 30.1 (#86), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1458 | 1411 |
| NYT Connections (extended) | — | 28.4% |
Math Step 3.5 Flash leads
Amazon Nova Experimental Chat 26 02 10: 39.3 (#109), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1438 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
Knowledge Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 42.3 (#97), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1506 | 1421 |
Multilingual Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 54.0 (#50), Step 3.5 Flash: 50.5 (#119)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1434 | 1385 |
| LMArena Chinese | 1463 | 1447 |
| LMArena Russian | 1423 | 1385 |
| LMArena French | — | 1421 |
| LMArena German | — | 1405 |
| LMArena Japanese | — | 1354 |
| LMArena Korean | — | 1352 |
| LMArena Spanish | — | 1419 |
Instruction Following Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 75.2 (#69), Step 3.5 Flash: 73.1 (#124)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1427 | 1385 |
Long Context Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 44.0 (#77), Step 3.5 Flash: 42.8 (#117)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1441 | 1402 |
Writing & Preference Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 61.8 (#84), Step 3.5 Flash: 58.8 (#113)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1448 | 1403 |
| LMArena Creative Writing | 1368 | 1357 |
| LMArena Multi-Turn | 1442 | 1405 |
Frequently asked questions
Is Amazon Nova Experimental Chat 26 02 10 better than Step 3.5 Flash?
Amazon Nova Experimental Chat 26 02 10 is the stronger model overall, scoring 44.5 to 42.3 on the Noometry Index.
Is Amazon Nova Experimental Chat 26 02 10 or Step 3.5 Flash better for coding?
Amazon Nova Experimental Chat 26 02 10 scores higher on coding benchmarks: 43.9 versus 42.4 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 26 02 10 and Step 3.5 Flash share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 26 02 10 has 12 scored results on Noometry and Step 3.5 Flash has 19.