# DeepSeek V4 Pro vs Mistral Medium 3.5

> DeepSeek V4 Pro is the stronger model overall, scoring 54.2 to 39.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-pro-vs-mistral-medium-3-5
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. DeepSeek V4 Pro scores higher in 8 categories and Mistral Medium 3.5 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where DeepSeek V4 Pro leads 56.4 to 16.6.
- The biggest single-benchmark swing is NYT Connections (extended): 91.3% for DeepSeek V4 Pro and 12.9% for Mistral Medium 3.5.
- DeepSeek V4 Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $1.50 / $7.50 for Mistral Medium 3.5.
- DeepSeek V4 Pro accepts more context: 1M tokens versus 262K.

## Snapshot

| | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| Provider | DeepSeek | Mistral AI |
| Noometry Index | 54.2 | 39.6 |
| Rank | 28 | 151 |
| Context | 1M | 262K |
| Input $/M | $0.43 | $1.50 |
| Output $/M | $0.87 | $7.50 |
| Weights | Open | Open |

## Coding

- DeepSeek V4 Pro: 52.2 (#31)
- Mistral Medium 3.5: 35.7 (#208)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena WebDev | 1582 | 1263 |
| LMArena Coding | 1470 | 1461 |
| SWE-bench Verified | 77.6% | — |
| FrontierCode | 28.6% | — |
| SciCode | 51% | — |
| WeirdML | 66.2% | — |
| ALE-Bench | 1,403 | — |

## Agentic & Tool Use

- DeepSeek V4 Pro: 32.7 (#54)
- Mistral Medium 3.5: —

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| APEX-Agents | 47.3% | — |
| Vending-Bench 2 | 3,285 | — |

## Reasoning

- DeepSeek V4 Pro: 56.4 (#22)
- Mistral Medium 3.5: 16.6 (#290)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| Kagi LLM Benchmark | 53.5% | 41.4% |
| NYT Connections (extended) | 91.3% | 12.9% |
| LMArena Hard Prompts | 1461 | 1436 |
| Epoch Capabilities Index | 155.39 | 141.42 |
| ARC-AGI-2 | 61.3% | — |
| ARC-AGI-1 | 90.5% | — |
| CritPt | 18% | — |
| Chess Puzzles | 47% | — |
| Mystery Game Puzzles | 43% | — |
| DTBench | 93.9% | — |
| LMCA | 45.5% | — |
| Surface Evolver Bench | 40% | — |
| ForecastBench | 56.1 | — |

## Math

- DeepSeek V4 Pro: 64.6 (#24)
- Mistral Medium 3.5: 36.4 (#113)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Math | 1455 | 1432 |
| FrontierMath (Tiers 1-3) | 64.6% | — |
| FrontierMath Tier 4 | 26.8% | — |
| MathArena Final-Answer Competitions | 76.6% | — |
| OTIS Mock AIME 2024-2025 | 98.6% | — |
| ProofBench | 50% | — |

## Knowledge

- DeepSeek V4 Pro: 59.5 (#28)
- Mistral Medium 3.5: 39.3 (#123)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Expert | 1463 | 1431 |
| GPQA Diamond | 91.7% | — |
| SimpleQA Verified | 52.9% | — |
| Vectara Hallucination Rate | 8.6% | — |

## Multimodal

- DeepSeek V4 Pro: —
- Mistral Medium 3.5: 37.6 (#64)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Vision | — | 1222 |

## Multilingual

- DeepSeek V4 Pro: 54.5 (#44)
- Mistral Medium 3.5: 52.1 (#93)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Non-English | 1438 | 1405 |
| LMArena Chinese | 1486 | 1443 |
| LMArena French | 1473 | 1448 |
| LMArena German | 1458 | 1453 |
| LMArena Korean | 1452 | 1387 |
| LMArena Russian | 1452 | 1396 |
| LMArena Spanish | 1457 | 1406 |
| LMArena Japanese | 1448 | — |

## Instruction Following

- DeepSeek V4 Pro: 76.3 (#44)
- Mistral Medium 3.5: 74.7 (#87)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Instruction Following | 1448 | 1414 |

## Long Context

- DeepSeek V4 Pro: 45.0 (#49)
- Mistral Medium 3.5: 43.2 (#101)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Longer Query | 1459 | 1414 |
| CL-bench Life | 13.5% | — |

## Writing & Preference

- DeepSeek V4 Pro: 65.6 (#45)
- Mistral Medium 3.5: 58.6 (#113)

| Benchmark | DeepSeek V4 Pro | Mistral Medium 3.5 |
|---|---|---|
| LMArena Text | 1451 | 1421 |
| LMArena Creative Writing | 1446 | 1372 |
| EQ-Bench 4 | 1166 | 993 |
| LMArena Multi-Turn | 1467 | 1423 |
| EQ-Bench Creative Writing | 1553 | — |

## FAQ

### Is DeepSeek V4 Pro better than Mistral Medium 3.5?

DeepSeek V4 Pro is the stronger model overall, scoring 54.2 to 39.6 on the Noometry Index.

### Which is cheaper, DeepSeek V4 Pro or Mistral Medium 3.5?

DeepSeek V4 Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Mistral Medium 3.5 lists at $1.50 and $7.50.

### Is DeepSeek V4 Pro or Mistral Medium 3.5 better for coding?

DeepSeek V4 Pro scores higher on coding benchmarks: 52.2 versus 35.7 in the Noometry coding category.

### Which has the bigger context window?

DeepSeek V4 Pro does, with 1M tokens against 262K.

### How many benchmarks do DeepSeek V4 Pro and Mistral Medium 3.5 share?

21 benchmarks have published results for both models. DeepSeek V4 Pro has 48 scored results on Noometry and Mistral Medium 3.5 has 22.