Model comparison
Amazon Nova Experimental Chat 11 10 vs GPT-5-Codex
Amazon Nova Experimental Chat 11 10 is the stronger model overall, scoring 43.0 to 37.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Side by side
| Amazon Nova Experimental Chat 11 10 | GPT-5-Codex | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 43.0 | 37.9 |
| Released | — | 2025-09-15 |
| Weights | Proprietary | Proprietary |
| Context window | — | 400K |
| Max output | — | 128K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $10 |
| Results tracked | 17 | 3 |
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Category by category
Coding Too close to call
Amazon Nova Experimental Chat 11 10: 42.3 (#107), GPT-5-Codex: 42.4 (#103)
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| WeirdML | — | 54.5% |
| LMArena Coding | 1433 | — |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 11 10: —, GPT-5-Codex: 31.0 (#72)
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| Terminal-Bench | — | 44.3% |
Reasoning GPT-5-Codex leads
Amazon Nova Experimental Chat 11 10: 29.1 (#95), GPT-5-Codex: 30.9 (#83)
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| Kagi LLM Benchmark | — | 70.3% |
| LMArena Hard Prompts | 1422 | — |
Math Not comparable
Amazon Nova Experimental Chat 11 10: 39.1 (#114), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Math | 1431 | — |
Knowledge Not comparable
Amazon Nova Experimental Chat 11 10: 39.9 (#127), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Expert | 1431 | — |
Multilingual Not comparable
Amazon Nova Experimental Chat 11 10: 51.9 (#98), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Non-English | 1405 | — |
| LMArena Chinese | 1463 | — |
| LMArena French | 1449 | — |
| LMArena German | 1395 | — |
| LMArena Japanese | 1383 | — |
| LMArena Korean | 1384 | — |
| LMArena Russian | 1394 | — |
| LMArena Spanish | 1444 | — |
Instruction Following Not comparable
Amazon Nova Experimental Chat 11 10: 73.2 (#122), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Instruction Following | 1387 | — |
Long Context Not comparable
Amazon Nova Experimental Chat 11 10: 42.5 (#121), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Longer Query | 1395 | — |
Writing & Preference Not comparable
Amazon Nova Experimental Chat 11 10: 58.8 (#114), GPT-5-Codex: —
| Benchmark | Amazon Nova Experimental Chat 11 10 | GPT-5-Codex |
|---|---|---|
| LMArena Text | 1415 | — |
| LMArena Creative Writing | 1349 | — |
| LMArena Multi-Turn | 1380 | — |
Frequently asked questions
Is Amazon Nova Experimental Chat 11 10 better than GPT-5-Codex?
Amazon Nova Experimental Chat 11 10 is the stronger model overall, scoring 43.0 to 37.9 on the Noometry Index.
Is Amazon Nova Experimental Chat 11 10 or GPT-5-Codex better for coding?
They score almost the same on coding (42.3 vs 42.4); test both on your own repository before choosing.
How many benchmarks do Amazon Nova Experimental Chat 11 10 and GPT-5-Codex share?
0 benchmarks have published results for both models. Amazon Nova Experimental Chat 11 10 has 17 scored results on Noometry and GPT-5-Codex has 3.