Model comparison
Amazon Nova Experimental Chat 26 02 10 vs GPT-5.3 Chat
Amazon Nova Experimental Chat 26 02 10 is the stronger model overall, scoring 44.5 to 42.8 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 26 02 10 scores higher in 7 categories and GPT-5.3 Chat in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in multilingual, where Amazon Nova Experimental Chat 26 02 10 leads 54.0 to 50.3.
Side by side
| Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 44.5 | 42.8 |
| Released | — | 2026-03-03 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 16K |
| Input $ / M tokens | — | $1.75 |
| Output $ / M tokens | — | $14 |
| Results tracked | 12 | 18 |
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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), GPT-5.3 Chat: 41.4 (#124)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1483 | 1408 |
Reasoning Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 30.1 (#86), GPT-5.3 Chat: 28.5 (#102)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1458 | 1399 |
Math Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 39.3 (#109), GPT-5.3 Chat: 38.2 (#142)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | 1438 | 1389 |
Knowledge Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 42.3 (#97), GPT-5.3 Chat: 38.8 (#140)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | 1506 | 1397 |
Multilingual Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 54.0 (#50), GPT-5.3 Chat: 50.3 (#124)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1434 | 1382 |
| LMArena Chinese | 1463 | 1432 |
| LMArena Russian | 1423 | 1400 |
| LMArena French | — | 1397 |
| LMArena German | — | 1384 |
| LMArena Japanese | — | 1352 |
| LMArena Korean | — | 1346 |
| LMArena Spanish | — | 1371 |
Instruction Following Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 75.2 (#69), GPT-5.3 Chat: 72.8 (#129)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1427 | 1378 |
Long Context Amazon Nova Experimental Chat 26 02 10 leads
Amazon Nova Experimental Chat 26 02 10: 44.0 (#77), GPT-5.3 Chat: 42.6 (#120)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1441 | 1396 |
Writing & Preference GPT-5.3 Chat leads
Amazon Nova Experimental Chat 26 02 10: 61.8 (#84), GPT-5.3 Chat: 63.1 (#68)
| Benchmark | Amazon Nova Experimental Chat 26 02 10 | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1448 | 1389 |
| LMArena Creative Writing | 1368 | 1355 |
| LMArena Multi-Turn | 1442 | 1412 |
| EQ-Bench Creative Writing | — | 1690 |
Frequently asked questions
Is Amazon Nova Experimental Chat 26 02 10 better than GPT-5.3 Chat?
Amazon Nova Experimental Chat 26 02 10 is the stronger model overall, scoring 44.5 to 42.8 on the Noometry Index.
Is Amazon Nova Experimental Chat 26 02 10 or GPT-5.3 Chat better for coding?
Amazon Nova Experimental Chat 26 02 10 scores higher on coding benchmarks: 43.9 versus 41.4 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 26 02 10 and GPT-5.3 Chat share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 26 02 10 has 12 scored results on Noometry and GPT-5.3 Chat has 18.