# DeepSeek V4.1 Flash vs Grok 4.20 Multi-Agent

> DeepSeek V4.1 Flash is the stronger model overall, scoring 50.3 to 45.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-1-flash-vs-grok-4-20-multi-agent
- Last updated: 2026-10-10
- Shared benchmarks: 15

## Summary

- They share 15 benchmarks with published results for both. DeepSeek V4.1 Flash scores higher in 8 categories and Grok 4.20 Multi-Agent in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4.1 Flash leads 48.4 to 36.6.
- DeepSeek V4.1 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $1.25 / $2.50 for Grok 4.20 Multi-Agent.
- DeepSeek V4.1 Flash has downloadable open weights; the other is API-only.

## Snapshot

| | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| Provider | DeepSeek | xAI |
| Noometry Index | 50.3 | 45.5 |
| Rank | 40 | 62 |
| Context | 1M | 1M |
| Input $/M | $0.15 | $1.25 |
| Output $/M | $0.60 | $2.50 |
| Weights | Open | Proprietary |

## Coding

- DeepSeek V4.1 Flash: 52.8 (#29)
- Grok 4.20 Multi-Agent: 42.4 (#91)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Coding | 1511 | 1458 |
| LMArena WebDev | 1620 | — |
| SciCode | 51.9% | — |
| ALE-Bench | 1,092 | — |

## Agentic & Tool Use

- DeepSeek V4.1 Flash: —
- Grok 4.20 Multi-Agent: —

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Search | — | 1204 |

## Reasoning

- DeepSeek V4.1 Flash: 46.2 (#39)
- Grok 4.20 Multi-Agent: 42.4 (#44)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| NYT Connections (extended) | 89.6% | 89.6% |
| LMArena Hard Prompts | 1485 | 1448 |
| CritPt | 14.3% | — |
| DTBench | 89.9% | — |
| LMCA | 47% | — |
| Surface Evolver Bench | 46.3% | — |
| Epoch Capabilities Index | 155.01 | — |

## Math

- DeepSeek V4.1 Flash: 48.4 (#52)
- Grok 4.20 Multi-Agent: 36.6 (#106)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Math | 1493 | 1441 |
| ProofBench | 54% | — |

## Knowledge

- DeepSeek V4.1 Flash: 41.6 (#97)
- Grok 4.20 Multi-Agent: 39.7 (#116)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Expert | 1505 | 1445 |

## Multimodal

- DeepSeek V4.1 Flash: —
- Grok 4.20 Multi-Agent: 39.8 (#44)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Vision | — | 1259 |

## Multilingual

- DeepSeek V4.1 Flash: 55.5 (#29)
- Grok 4.20 Multi-Agent: 54.6 (#40)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Non-English | 1452 | 1440 |
| LMArena Chinese | 1506 | 1475 |
| LMArena French | 1448 | 1467 |
| LMArena Russian | 1473 | 1457 |
| LMArena Spanish | 1499 | 1447 |
| LMArena German | — | 1456 |
| LMArena Japanese | — | 1405 |
| LMArena Korean | — | 1416 |

## Instruction Following

- DeepSeek V4.1 Flash: 77.6 (#24)
- Grok 4.20 Multi-Agent: 75.0 (#80)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Instruction Following | 1475 | 1420 |

## Long Context

- DeepSeek V4.1 Flash: 45.2 (#46)
- Grok 4.20 Multi-Agent: 43.7 (#84)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Longer Query | 1476 | 1430 |

## Writing & Preference

- DeepSeek V4.1 Flash: 65.8 (#43)
- Grok 4.20 Multi-Agent: 64.1 (#57)

| Benchmark | DeepSeek V4.1 Flash | Grok 4.20 Multi-Agent |
|---|---|---|
| LMArena Text | 1465 | 1450 |
| LMArena Creative Writing | 1436 | 1435 |
| LMArena Multi-Turn | 1460 | 1451 |
| EQ-Bench Creative Writing | 1540 | — |

## FAQ

### Is DeepSeek V4.1 Flash better than Grok 4.20 Multi-Agent?

DeepSeek V4.1 Flash is the stronger model overall, scoring 50.3 to 45.5 on the Noometry Index.

### Which is cheaper, DeepSeek V4.1 Flash or Grok 4.20 Multi-Agent?

DeepSeek V4.1 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Grok 4.20 Multi-Agent lists at $1.25 and $2.50.

### Is DeepSeek V4.1 Flash or Grok 4.20 Multi-Agent better for coding?

DeepSeek V4.1 Flash scores higher on coding benchmarks: 52.8 versus 42.4 in the Noometry coding category.

### Which has the bigger context window?

Both accept 1M tokens.

### How many benchmarks do DeepSeek V4.1 Flash and Grok 4.20 Multi-Agent share?

15 benchmarks have published results for both models. DeepSeek V4.1 Flash has 25 scored results on Noometry and Grok 4.20 Multi-Agent has 20.