Model comparison
Amazon Nova Experimental Chat 10 09 vs Grok 4.1 Fast
Amazon Nova Experimental Chat 10 09 and Grok 4.1 Fast score almost the same on the Noometry Index (41.9 vs 41.4), so choose on price, context window or the category you care about most.
Last verified . 9 shared benchmarks.
Summary
- They share 9 benchmarks with published results for both. Amazon Nova Experimental Chat 10 09 scores higher in 1 category and Grok 4.1 Fast in 5 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.1 Fast leads 43.4 to 27.3.
Side by side
| Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast | |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 41.9 | 41.4 |
| 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 | 9 | 32 |
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Category by category
Coding Amazon Nova Experimental Chat 10 09 leads
Amazon Nova Experimental Chat 10 09: 40.2 (#145), Grok 4.1 Fast: 34.1 (#245)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Coding | 1370 | 1411 |
| LMArena WebDev | — | 1242 |
| ALE-Bench | — | 394.93 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.1 Fast: 36.3 (#39)
| Benchmark | Amazon Nova Experimental Chat 10 09 | 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 10 09: 27.3 (#120), Grok 4.1 Fast: 43.4 (#49)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1407 |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |
Math Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.1 Fast: 31.9 (#221)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| LMArena Math | — | 1408 |
Knowledge Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.1 Fast: 33.1 (#207)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| Vectara Hallucination Rate | — | 17.8% |
| LMArena Expert | — | 1399 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.1 Fast: 37.0 (#76)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |
Multilingual Grok 4.1 Fast leads
Amazon Nova Experimental Chat 10 09: 47.3 (#150), Grok 4.1 Fast: 51.0 (#114)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | 1340 | 1391 |
| LMArena Chinese | 1341 | 1441 |
| LMArena French | — | 1415 |
| LMArena German | — | 1404 |
| LMArena Japanese | — | 1349 |
| LMArena Korean | — | 1361 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1413 |
Instruction Following Grok 4.1 Fast leads
Amazon Nova Experimental Chat 10 09: 69.4 (#172), Grok 4.1 Fast: 72.7 (#133)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | 1315 | 1376 |
Long Context Grok 4.1 Fast leads
Amazon Nova Experimental Chat 10 09: 40.5 (#152), Grok 4.1 Fast: 42.4 (#126)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | 1333 | 1390 |
Writing & Preference Grok 4.1 Fast leads
Amazon Nova Experimental Chat 10 09: 54.7 (#149), Grok 4.1 Fast: 57.2 (#131)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | 1364 | 1408 |
| LMArena Creative Writing | 1307 | 1394 |
| LMArena Multi-Turn | 1355 | 1389 |
| EQ-Bench Creative Writing | — | 1327 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than Grok 4.1 Fast?
Amazon Nova Experimental Chat 10 09 and Grok 4.1 Fast score almost the same on the Noometry Index (41.9 vs 41.4), so choose on price, context window or the category you care about most.
Is Amazon Nova Experimental Chat 10 09 or Grok 4.1 Fast better for coding?
Amazon Nova Experimental Chat 10 09 scores higher on coding benchmarks: 40.2 versus 34.1 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 09 and Grok 4.1 Fast share?
9 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and Grok 4.1 Fast has 32.