# Gemma 3n E4b IT vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 36.7 on the Noometry Index. Gemma 3n E4b IT costs 21× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gemma-3n-e4b-it-vs-grok-4-20-multi-agent
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Gemma 3n E4b IT scores higher in 0 categories and Grok 4.20 Multi-Agent in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 Multi-Agent leads 42.4 to 19.2.
- Gemma 3n E4b IT is cheaper at $0.06 / $0.12 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- Grok 4.20 Multi-Agent accepts more context: 1M tokens versus 33K.
- Gemma 3n E4b IT has downloadable open weights; the other is API-only.

## Snapshot

| | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 36.7 | 45.5 |
| Rank | 203 | 62 |
| Context | 33K | 1M |
| Input $/M | $0.06 | $1.25 |
| Output $/M | $0.12 | $2.50 |
| Weights | Open | Proprietary |

## Coding

- Gemma 3n E4b IT: 36.4 (#193)
- Grok 4.20 Multi-Agent: 42.4 (#91)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1269 | 1458 |

## Agentic & Tool Use

- Gemma 3n E4b IT: —
- Grok 4.20 Multi-Agent: —

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |

## Reasoning

- Gemma 3n E4b IT: 19.2 (#239)
- Grok 4.20 Multi-Agent: 42.4 (#44)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Hard Prompts | 1284 | 1448 |
| Kagi LLM Benchmark | 31.5% | — |
| NYT Connections (extended) | — | 89.6% |

## Math

- Gemma 3n E4b IT: 32.5 (#186)
- Grok 4.20 Multi-Agent: 36.6 (#106)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1251 | 1441 |

## Knowledge

- Gemma 3n E4b IT: 33.6 (#193)
- Grok 4.20 Multi-Agent: 39.7 (#116)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1245 | 1445 |

## Multimodal

- Gemma 3n E4b IT: —
- Grok 4.20 Multi-Agent: 39.8 (#44)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |

## Multilingual

- Gemma 3n E4b IT: 43.5 (#179)
- Grok 4.20 Multi-Agent: 54.6 (#40)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1285 | 1440 |
| LMArena Chinese | 1310 | 1475 |
| LMArena French | 1330 | 1467 |
| LMArena German | 1312 | 1456 |
| LMArena Japanese | 1274 | 1405 |
| LMArena Korean | 1259 | 1416 |
| LMArena Russian | 1288 | 1457 |
| LMArena Spanish | 1305 | 1447 |

## Instruction Following

- Gemma 3n E4b IT: 66.3 (#205)
- Grok 4.20 Multi-Agent: 75.0 (#80)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1255 | 1420 |

## Long Context

- Gemma 3n E4b IT: 38.8 (#185)
- Grok 4.20 Multi-Agent: 43.7 (#84)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1277 | 1430 |

## Writing & Preference

- Gemma 3n E4b IT: 50.3 (#181)
- Grok 4.20 Multi-Agent: 64.1 (#57)

| Benchmark | Gemma 3n E4b IT | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1306 | 1450 |
| LMArena Creative Writing | 1287 | 1435 |
| LMArena Multi-Turn | 1276 | 1451 |

## FAQ

### Is Gemma 3n E4b IT better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent is the stronger model overall, scoring 45.5 to 36.7 on the Noometry Index. Gemma 3n E4b IT costs 21× less per token, which makes it the better buy when Grok 4.20 Multi-Agent's lead doesn't matter for your workload.

### Which is cheaper, Gemma 3n E4b IT or Grok 4.20 Multi-Agent?

Gemma 3n E4b IT is cheaper. It lists at $0.06 per million input tokens and $0.12 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Gemma 3n E4b IT or Grok 4.20 Multi-Agent better for coding?

Grok 4.20 Multi-Agent scores higher on coding benchmarks: 42.4 versus 36.4 in the Noometry coding category.

### Which has the bigger context window?

Grok 4.20 Multi-Agent does, with 1M tokens against 33K.

### How many benchmarks do Gemma 3n E4b IT and Grok 4.20 Multi-Agent share?

17 benchmarks have published results for both models. Gemma 3n E4b IT has 18 scored results on Noometry and Grok 4.20 Multi-Agent has 20.