Model comparison
Amazon Nova Experimental Chat 10 20 vs Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Amazon Nova Experimental Chat 10 20 scores higher in 0 categories and Grok 4.20 Multi-Agent in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 28.4.
Side by side
| Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent | |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 42.1 | 46.2 |
| Released | — | 2026-03-09 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 30K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 17 | 20 |
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Category by category
Coding Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 41.6 (#123), Grok 4.20 Multi-Agent: 43.0 (#92)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1412 | 1457 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 20: —, Grok 4.20 Multi-Agent: —
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |
Reasoning Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 28.4 (#106), Grok 4.20 Multi-Agent: 43.9 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1396 | 1448 |
| NYT Connections (extended) | — | 89.6% |
Math Too close to call
Amazon Nova Experimental Chat 10 20: 39.0 (#119), Grok 4.20 Multi-Agent: 39.4 (#104)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1425 | 1442 |
Knowledge Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 38.5 (#144), Grok 4.20 Multi-Agent: 40.4 (#119)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1386 | 1445 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 20: —, Grok 4.20 Multi-Agent: 40.5 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |
Multilingual Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 49.5 (#131), Grok 4.20 Multi-Agent: 54.4 (#43)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1372 | 1440 |
| LMArena Chinese | 1404 | 1475 |
| LMArena French | 1425 | 1466 |
| LMArena German | 1391 | 1456 |
| LMArena Japanese | 1360 | 1405 |
| LMArena Korean | 1324 | 1416 |
| LMArena Russian | 1371 | 1457 |
| LMArena Spanish | 1382 | 1447 |
Instruction Following Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 72.1 (#141), Grok 4.20 Multi-Agent: 74.8 (#84)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1365 | 1420 |
Long Context Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 41.7 (#133), Grok 4.20 Multi-Agent: 43.7 (#88)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1370 | 1431 |
Writing & Preference Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 20: 56.6 (#136), Grok 4.20 Multi-Agent: 64.0 (#59)
| Benchmark | Amazon Nova Experimental Chat 10 20 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1394 | 1450 |
| LMArena Creative Writing | 1318 | 1436 |
| LMArena Multi-Turn | 1364 | 1452 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 20 better than Grok 4.20 Multi-Agent?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 42.1 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 20 or Grok 4.20 Multi-Agent better for coding?
Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 41.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 20 and Grok 4.20 Multi-Agent share?
17 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 20 has 17 scored results on Noometry and Grok 4.20 Multi-Agent has 20.