Model comparison
Amazon Nova Experimental Chat 12 10 vs GPT-5.5 Instant
Amazon Nova Experimental Chat 12 10 and GPT-5.5 Instant score almost the same on the Noometry Index (42.9 vs 42.7), so choose on price, context window or the category you care about most.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 2 categories and GPT-5.5 Instant in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Amazon Nova Experimental Chat 12 10 leads 38.9 to 26.5.
Side by side
| Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 42.9 | 42.7 |
| Released | — | 2026-05-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 12 | 27 |
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Category by category
Coding GPT-5.5 Instant leads
Amazon Nova Experimental Chat 12 10: 42.2 (#110), GPT-5.5 Instant: 44.3 (#74)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Coding | 1430 | 1433 |
| SciCode | — | 48.6% |
Reasoning Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 29.3 (#94), GPT-5.5 Instant: 24.9 (#155)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1427 | 1426 |
| CritPt | — | 0% |
| Chess Puzzles | — | 12% |
| Epoch Capabilities Index | — | 142.52 |
Math Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 38.9 (#124), GPT-5.5 Instant: 26.5 (#259)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Math | 1419 | 1420 |
| FrontierMath (Tiers 1-3) | — | 26.3% |
| FrontierMath Tier 4 | — | 2.4% |
| OTIS Mock AIME 2024-2025 | — | 68.1% |
Knowledge GPT-5.5 Instant leads
Amazon Nova Experimental Chat 12 10: 39.2 (#136), GPT-5.5 Instant: 48.9 (#74)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Expert | 1408 | 1409 |
| GPQA Diamond | — | 82.5% |
Multimodal Not comparable
Amazon Nova Experimental Chat 12 10: —, GPT-5.5 Instant: 40.0 (#52)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Vision | — | 1250 |
| LMArena Document | — | 1403 |
Multilingual GPT-5.5 Instant leads
Amazon Nova Experimental Chat 12 10: 51.4 (#108), GPT-5.5 Instant: 52.8 (#80)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Non-English | 1398 | 1417 |
| LMArena Chinese | 1440 | 1456 |
| LMArena Russian | 1395 | 1431 |
| LMArena French | — | 1428 |
| LMArena German | — | 1411 |
| LMArena Japanese | — | 1408 |
| LMArena Korean | — | 1392 |
| LMArena Spanish | — | 1429 |
Instruction Following Too close to call
Amazon Nova Experimental Chat 12 10: 73.2 (#123), GPT-5.5 Instant: 74.2 (#100)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1387 | 1406 |
Long Context GPT-5.5 Instant leads
Amazon Nova Experimental Chat 12 10: 42.4 (#125), GPT-5.5 Instant: 43.4 (#96)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Longer Query | 1391 | 1422 |
Writing & Preference GPT-5.5 Instant leads
Amazon Nova Experimental Chat 12 10: 59.5 (#110), GPT-5.5 Instant: 61.8 (#85)
| Benchmark | Amazon Nova Experimental Chat 12 10 | GPT-5.5 Instant |
|---|---|---|
| LMArena Text | 1420 | 1419 |
| LMArena Creative Writing | 1350 | 1419 |
| LMArena Multi-Turn | 1409 | 1433 |
Frequently asked questions
Is Amazon Nova Experimental Chat 12 10 better than GPT-5.5 Instant?
Amazon Nova Experimental Chat 12 10 and GPT-5.5 Instant score almost the same on the Noometry Index (42.9 vs 42.7), so choose on price, context window or the category you care about most.
Is Amazon Nova Experimental Chat 12 10 or GPT-5.5 Instant better for coding?
GPT-5.5 Instant scores higher on coding benchmarks: 44.3 versus 42.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 12 10 and GPT-5.5 Instant share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and GPT-5.5 Instant has 27.