Model comparison
Amazon Nova Experimental Chat 10 09 vs o3-pro
o3-pro is the stronger model overall, scoring 42.7 to 41.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in long context, where o3-pro leads 72.1 to 40.6.
Side by side
| Amazon Nova Experimental Chat 10 09 | o3-pro | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 41.4 | 42.7 |
| Released | — | 2025-06-10 |
| Weights | Proprietary | Proprietary |
| Context window | — | 200K |
| Max output | — | 100K |
| Input $ / M tokens | — | $20 |
| Output $ / M tokens | — | $80 |
| Results tracked | 9 | 12 |
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Category by category
Coding o3-pro leads
Amazon Nova Experimental Chat 10 09: 39.6 (#142), o3-pro: 55.1 (#22)
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1371 | — |
Reasoning Amazon Nova Experimental Chat 10 09 leads
Amazon Nova Experimental Chat 10 09: 26.2 (#122), o3-pro: 24.1 (#152)
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1356 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |
Knowledge Not comparable
Amazon Nova Experimental Chat 10 09: —, o3-pro: 29.0 (#234)
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
Multilingual Not comparable
Amazon Nova Experimental Chat 10 09: 47.5 (#145), o3-pro: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Non-English | 1341 | — |
| LMArena Chinese | 1345 | — |
Instruction Following Not comparable
Amazon Nova Experimental Chat 10 09: 69.7 (#167), o3-pro: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1316 | — |
Long Context o3-pro leads
Amazon Nova Experimental Chat 10 09: 40.6 (#146), o3-pro: 72.1 (#1)
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1334 | — |
Writing & Preference o3-pro leads
Amazon Nova Experimental Chat 10 09: 55.0 (#144), o3-pro: 57.1 (#128)
| Benchmark | Amazon Nova Experimental Chat 10 09 | o3-pro |
|---|---|---|
| LMArena Text | 1365 | — |
| LMArena Creative Writing | 1307 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1354 | — |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than o3-pro?
o3-pro is the stronger model overall, scoring 42.7 to 41.4 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 09 or o3-pro better for coding?
o3-pro scores higher on coding benchmarks: 55.1 versus 39.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 09 and o3-pro share?
0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and o3-pro has 12.