# Gemini 3 Deep Think vs Grok 4.20 Multi-Agent

> Grok 4.20 Multi-Agent has enough public results to be ranked (#62); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/gemini-3-deep-think-vs-grok-4-20-multi-agent
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.8 to 42.4.

## Snapshot

| | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 58.5 | 45.5 |
| Rank | — | 62 |
| Context | — | 1M |
| Input $/M | — | $1.25 |
| Output $/M | — | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 42.4 (#91)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | — | 1458 |

## Agentic & Tool Use

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: —

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |

## Reasoning

- Gemini 3 Deep Think: 70.8 (#11)
- Grok 4.20 Multi-Agent: 42.4 (#44)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| NYT Connections (extended) | — | 89.6% |
| ARC-AGI-1 | 96% | — |
| CritPt | 25.7% | — |
| LMArena Hard Prompts | — | 1448 |

## Math

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 36.6 (#106)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | — | 1441 |

## Knowledge

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 39.7 (#116)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | — | 1445 |

## Multimodal

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 39.8 (#44)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |

## Multilingual

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 54.6 (#40)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | — | 1440 |
| LMArena Chinese | — | 1475 |
| LMArena French | — | 1467 |
| LMArena German | — | 1456 |
| LMArena Japanese | — | 1405 |
| LMArena Korean | — | 1416 |
| LMArena Russian | — | 1457 |
| LMArena Spanish | — | 1447 |

## Instruction Following

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 75.0 (#80)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | — | 1420 |

## Long Context

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 43.7 (#84)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | — | 1430 |

## Writing & Preference

- Gemini 3 Deep Think: —
- Grok 4.20 Multi-Agent: 64.1 (#57)

| Benchmark | Gemini 3 Deep Think | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | — | 1450 |
| LMArena Creative Writing | — | 1435 |
| LMArena Multi-Turn | — | 1451 |

## FAQ

### Is Gemini 3 Deep Think better than Grok 4.20 Multi-Agent?

Grok 4.20 Multi-Agent has enough public results to be ranked (#62); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

### How many benchmarks do Gemini 3 Deep Think and Grok 4.20 Multi-Agent share?

0 benchmarks have published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and Grok 4.20 Multi-Agent has 20.