Model comparison
Amazon Nova Experimental Chat 12 10 vs Grok 4.1 Fast
Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.3 to 40.9 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. Amazon Nova Experimental Chat 12 10 scores higher in 7 categories and Grok 4.1 Fast in 1 category; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 42.3 to 28.1.
Side by side
| Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast | |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 42.3 | 40.9 |
| Released | — | 2025-06-27 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 30K |
| Input $ / M tokens | — | $0.20 |
| Output $ / M tokens | — | $0.50 |
| Results tracked | 12 | 32 |
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Category by category
Coding Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 41.5 (#112), Grok 4.1 Fast: 33.8 (#236)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1430 | 1411 |
| LMArena WebDev | — | 1241 |
| ALE-Bench | — | 394.93 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 12 10: —, Grok 4.1 Fast: 36.1 (#35)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |
Reasoning Grok 4.1 Fast leads
Amazon Nova Experimental Chat 12 10: 28.1 (#93), Grok 4.1 Fast: 42.3 (#45)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1427 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |
Math Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 36.1 (#130), Grok 4.1 Fast: 30.9 (#201)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Math | 1418 | 1408 |
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
Knowledge Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 38.6 (#133), Grok 4.1 Fast: 32.6 (#203)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Expert | 1409 | 1398 |
| Vectara Hallucination Rate | — | 17.8% |
Multimodal Not comparable
Amazon Nova Experimental Chat 12 10: —, Grok 4.1 Fast: 36.3 (#71)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |
Multilingual Too close to call
Amazon Nova Experimental Chat 12 10: 51.7 (#103), Grok 4.1 Fast: 51.1 (#110)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1399 | 1391 |
| LMArena Chinese | 1440 | 1441 |
| LMArena Russian | 1397 | 1387 |
| LMArena French | — | 1416 |
| LMArena German | — | 1404 |
| LMArena Japanese | — | 1347 |
| LMArena Korean | — | 1361 |
| LMArena Spanish | — | 1411 |
Instruction Following Too close to call
Amazon Nova Experimental Chat 12 10: 73.4 (#117), Grok 4.1 Fast: 72.8 (#127)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1387 | 1376 |
Long Context Too close to call
Amazon Nova Experimental Chat 12 10: 42.4 (#120), Grok 4.1 Fast: 42.4 (#121)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1391 | 1390 |
Writing & Preference Amazon Nova Experimental Chat 12 10 leads
Amazon Nova Experimental Chat 12 10: 59.7 (#104), Grok 4.1 Fast: 57.4 (#126)
| Benchmark | Amazon Nova Experimental Chat 12 10 | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1420 | 1408 |
| LMArena Creative Writing | 1351 | 1394 |
| LMArena Multi-Turn | 1409 | 1389 |
| EQ-Bench Creative Writing | — | 1327 |
Frequently asked questions
Is Amazon Nova Experimental Chat 12 10 better than Grok 4.1 Fast?
Amazon Nova Experimental Chat 12 10 is the stronger model overall, scoring 42.3 to 40.9 on the Noometry Index.
Is Amazon Nova Experimental Chat 12 10 or Grok 4.1 Fast better for coding?
Amazon Nova Experimental Chat 12 10 scores higher on coding benchmarks: 41.5 versus 33.8 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 12 10 and Grok 4.1 Fast share?
12 benchmarks have published results for both models. Amazon Nova Experimental Chat 12 10 has 12 scored results on Noometry and Grok 4.1 Fast has 32.