Model comparison
Amazon Nova Experimental Chat 10 09 vs Grok 4.20 Multi-Agent
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 41.9 on the Noometry Index.
Last verified . 9 shared benchmarks.
Summary
- They share 9 benchmarks with published results for both. Amazon Nova Experimental Chat 10 09 scores higher in 0 categories and Grok 4.20 Multi-Agent in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 43.9 to 27.3.
Side by side
| Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent | |
|---|---|---|
| Provider | Amazon | xAI |
| Noometry Index | 41.9 | 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 | 9 | 20 |
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Category by category
Coding Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 40.2 (#145), Grok 4.20 Multi-Agent: 43.0 (#92)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1370 | 1457 |
Agentic & Tool Use Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.20 Multi-Agent: —
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |
Reasoning Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 27.3 (#120), Grok 4.20 Multi-Agent: 43.9 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1448 |
| NYT Connections (extended) | — | 89.6% |
Math Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.20 Multi-Agent: 39.4 (#104)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | — | 1442 |
Knowledge Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.20 Multi-Agent: 40.4 (#119)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | — | 1445 |
Multimodal Not comparable
Amazon Nova Experimental Chat 10 09: —, Grok 4.20 Multi-Agent: 40.5 (#48)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |
Multilingual Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 47.3 (#150), Grok 4.20 Multi-Agent: 54.4 (#43)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1340 | 1440 |
| LMArena Chinese | 1341 | 1475 |
| LMArena French | — | 1466 |
| LMArena German | — | 1456 |
| LMArena Japanese | — | 1405 |
| LMArena Korean | — | 1416 |
| LMArena Russian | — | 1457 |
| LMArena Spanish | — | 1447 |
Instruction Following Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 69.4 (#172), Grok 4.20 Multi-Agent: 74.8 (#84)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1315 | 1420 |
Long Context Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 40.5 (#152), Grok 4.20 Multi-Agent: 43.7 (#88)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1333 | 1431 |
Writing & Preference Grok 4.20 Multi-Agent leads
Amazon Nova Experimental Chat 10 09: 54.7 (#149), Grok 4.20 Multi-Agent: 64.0 (#59)
| Benchmark | Amazon Nova Experimental Chat 10 09 | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1364 | 1450 |
| LMArena Creative Writing | 1307 | 1436 |
| LMArena Multi-Turn | 1355 | 1452 |
Frequently asked questions
Is Amazon Nova Experimental Chat 10 09 better than Grok 4.20 Multi-Agent?
Grok 4.20 Multi-Agent is the stronger model overall, scoring 46.2 to 41.9 on the Noometry Index.
Is Amazon Nova Experimental Chat 10 09 or Grok 4.20 Multi-Agent better for coding?
Grok 4.20 Multi-Agent scores higher on coding benchmarks: 43.0 versus 40.2 in the Noometry coding category.
How many benchmarks do Amazon Nova Experimental Chat 10 09 and Grok 4.20 Multi-Agent share?
9 benchmarks have published results for both models. Amazon Nova Experimental Chat 10 09 has 9 scored results on Noometry and Grok 4.20 Multi-Agent has 20.