# Gemini 3.6 Flash vs Grok 4.20 Multi-Agent

> Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 45.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-6-flash-vs-grok-4-20-multi-agent
- Last updated: 2026-10-10
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Gemini 3.6 Flash scores higher in 8 categories and Grok 4.20 Multi-Agent in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Gemini 3.6 Flash leads 67.8 to 39.7.
- Both cost about the same: $0.75 input and $3.75 output per million tokens.
- Gemini 3.6 Flash accepts more context: 1.05M tokens versus 1M.

## Snapshot

| | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | Google | xAI |
| Noometry Index | 54.1 | 45.5 |
| Rank | 30 | 62 |
| Context | 1.05M | 1M |
| Input $/M | $0.75 | $1.25 |
| Output $/M | $3.75 | $2.50 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.6 Flash: 49.6 (#45)
- Grok 4.20 Multi-Agent: 42.4 (#91)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1492 | 1458 |
| DeepSWE | 46.7% | — |
| FrontierCode | 34.4% | — |
| LMArena WebDev | 1536 | — |
| SciCode | 52.7% | — |
| WeirdML | 56.1% | — |
| ALE-Bench | 715.52 | — |

## Agentic & Tool Use

- Gemini 3.6 Flash: 32.4 (#56)
- Grok 4.20 Multi-Agent: —

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| APEX-Agents | 46.9% | — |
| GDP.pdf | 14% | — |
| LMArena Search | — | 1204 |

## Reasoning

- Gemini 3.6 Flash: 58.9 (#20)
- Grok 4.20 Multi-Agent: 42.4 (#44)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| NYT Connections (extended) | 89% | 89.6% |
| LMArena Hard Prompts | 1486 | 1448 |
| ARC-AGI-2 | 60.4% | — |
| ARC-AGI-1 | 91.2% | — |
| CritPt | 10.6% | — |
| Chess Puzzles | 43% | — |
| Mystery Game Puzzles | 30% | — |
| DTBench | 95.5% | — |
| LMCA | 44.9% | — |
| Epoch Capabilities Index | 154.36 | — |

## Math

- Gemini 3.6 Flash: 57.0 (#33)
- Grok 4.20 Multi-Agent: 36.6 (#106)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1504 | 1441 |
| FrontierMath (Tiers 1-3) | 58.9% | — |
| FrontierMath Tier 4 | 22% | — |
| MathArena Final-Answer Competitions | 70.8% | — |
| OTIS Mock AIME 2024-2025 | 94.2% | — |
| ProofBench | 36% | — |

## Knowledge

- Gemini 3.6 Flash: 67.8 (#7)
- Grok 4.20 Multi-Agent: 39.7 (#116)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1489 | 1445 |
| GPQA Diamond | 94.1% | — |
| SimpleQA Verified | 66.2% | — |

## Multimodal

- Gemini 3.6 Flash: 38.7 (#55)
- Grok 4.20 Multi-Agent: 39.8 (#44)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | 1297 | 1259 |
| Blueprint-Bench 2 | 31.2% | — |
| Furniture Assembly | 23.3% | — |
| LMArena Document | 1456 | — |

## Multilingual

- Gemini 3.6 Flash: 56.8 (#17)
- Grok 4.20 Multi-Agent: 54.6 (#40)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1470 | 1440 |
| LMArena Chinese | 1530 | 1475 |
| LMArena French | 1501 | 1467 |
| LMArena German | 1478 | 1456 |
| LMArena Japanese | 1477 | 1405 |
| LMArena Korean | 1435 | 1416 |
| LMArena Russian | 1490 | 1457 |
| LMArena Spanish | 1477 | 1447 |

## Instruction Following

- Gemini 3.6 Flash: 77.2 (#27)
- Grok 4.20 Multi-Agent: 75.0 (#80)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1467 | 1420 |

## Long Context

- Gemini 3.6 Flash: 45.1 (#47)
- Grok 4.20 Multi-Agent: 43.7 (#84)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1475 | 1430 |

## Writing & Preference

- Gemini 3.6 Flash: 68.3 (#26)
- Grok 4.20 Multi-Agent: 64.1 (#57)

| Benchmark | Gemini 3.6 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1478 | 1450 |
| LMArena Creative Writing | 1464 | 1435 |
| LMArena Multi-Turn | 1481 | 1451 |
| EQ-Bench Creative Writing | 1604 | — |

## FAQ

### Is Gemini 3.6 Flash better than Grok 4.20 Multi-Agent?

Gemini 3.6 Flash is the stronger model overall, scoring 54.1 to 45.5 on the Noometry Index.

### Which is cheaper, Gemini 3.6 Flash or Grok 4.20 Multi-Agent?

Gemini 3.6 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is Gemini 3.6 Flash or Grok 4.20 Multi-Agent better for coding?

Gemini 3.6 Flash scores higher on coding benchmarks: 49.6 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.6 Flash does, with 1.05M tokens against 1M.

### How many benchmarks do Gemini 3.6 Flash and Grok 4.20 Multi-Agent share?

19 benchmarks have published results for both models. Gemini 3.6 Flash has 46 scored results on Noometry and Grok 4.20 Multi-Agent has 20.