Model comparison
Amazon Nova Experimental Chat 10 09 vs GPT-5.2 Codex
Amazon Nova Experimental Chat 10 09 and GPT-5.2 Codex score almost the same on the Noometry Index (41.9 vs 42.6), so choose on price, context window or the category you care about most.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in coding, where GPT-5.2 Codex leads 45.5 to 40.2.
Side by side
| Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex | |
|---|---|---|
| Provider | Amazon | OpenAI |
| Noometry Index | 41.9 | 42.6 |
| Released | — | 2025-12-18 |
| Weights | Proprietary | Proprietary |
| Context window | — | 400K |
| Max output | — | 128K |
| Input $ / M tokens | — | $1.75 |
| Output $ / M tokens | — | $14 |
| Results tracked | 9 | 5 |
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Category by category
Coding GPT-5.2 Codex leads
Amazon Nova Experimental Chat 10 09: 40.2 (#145), GPT-5.2 Codex: 45.5 (#71)
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| SWE-bench Verified (bash only) | — | 72.8% |
| LMArena WebDev | — | 1339 |
| SWE-bench Multilingual | — | 66.3% |
| LMArena Coding | 1370 | — |
| ALE-Bench | — | 1,300 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 09: —, GPT-5.2 Codex: 41.0 (#22)
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| Terminal-Bench | — | 66.5% |
Reasoning Not comparable
Amazon Nova Experimental Chat 10 09: 27.3 (#120), GPT-5.2 Codex: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| LMArena Hard Prompts | 1356 | — |
Multilingual Not comparable
Amazon Nova Experimental Chat 10 09: 47.3 (#150), GPT-5.2 Codex: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| LMArena Non-English | 1340 | — |
| LMArena Chinese | 1341 | — |
Instruction Following Not comparable
Amazon Nova Experimental Chat 10 09: 69.4 (#172), GPT-5.2 Codex: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| LMArena Instruction Following | 1315 | — |
Long Context Not comparable
Amazon Nova Experimental Chat 10 09: 40.5 (#152), GPT-5.2 Codex: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| LMArena Longer Query | 1333 | — |
Writing & Preference Not comparable
Amazon Nova Experimental Chat 10 09: 54.7 (#149), GPT-5.2 Codex: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | GPT-5.2 Codex |
|---|---|---|
| LMArena Text | 1364 | — |
| LMArena Creative Writing | 1307 | — |
| LMArena Multi-Turn | 1355 | — |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than GPT-5.2 Codex?
Amazon Nova Experimental Chat 10 09 and GPT-5.2 Codex score almost the same on the Noometry Index (41.9 vs 42.6), so choose on price, context window or the category you care about most.
Is Amazon Nova Experimental Chat 10 09 or GPT-5.2 Codex better for coding?
GPT-5.2 Codex scores higher on coding benchmarks: 45.5 versus 40.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 09 and GPT-5.2 Codex share?
0 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and GPT-5.2 Codex has 5.