# Devstral Small 2505 vs Gemini 4 Argon

> Gemini 4 Argon is the stronger model overall, scoring 56.5 to 34.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/devstral-small-vs-gemini-4-argon
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Devstral Small 2505 scores higher in 0 categories and Gemini 4 Argon in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 4 Argon leads 44.2 to 19.7.
- The biggest single-benchmark swing is SciCode: 28.8% for Devstral Small 2505 and 61.8% for Gemini 4 Argon.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| Provider | Mistral AI | Google |
| Noometry Index | 34.3 | 56.5 |
| Rank | 233 | 24 |
| Context | 128K | — |
| Input $/M | $0.10 | — |
| Output $/M | $0.30 | — |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.9 (#166)
- Gemini 4 Argon: 62.0 (#9)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| SciCode | 28.8% | 61.8% |
| SWE-bench Verified (bash only) | 56.4% | — |
| LMArena WebDev | — | 1678 |
| FrontierSWE | — | 55% |
| LMArena Coding | — | 1550 |

## Agentic & Tool Use

- Devstral Small 2505: —
- Gemini 4 Argon: 49.2 (#8)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| APEX-Agents | — | 82.2% |
| Vending-Bench 2 | — | 13,718 |

## Reasoning

- Devstral Small 2505: 19.7 (#252)
- Gemini 4 Argon: 44.2 (#47)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| CritPt | 0% | 27.1% |
| Kagi LLM Benchmark | 37.7% | — |
| LMArena Hard Prompts | — | 1548 |

## Math

- Devstral Small 2505: —
- Gemini 4 Argon: 73.9 (#17)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| ProofBench | — | 99% |
| LMArena Math | — | 1536 |

## Knowledge

- Devstral Small 2505: —
- Gemini 4 Argon: 43.9 (#89)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| LMArena Expert | — | 1553 |

## Multimodal

- Devstral Small 2505: —
- Gemini 4 Argon: 46.5 (#14)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| Blueprint-Bench 2 | — | 54.4% |

## Multilingual

- Devstral Small 2505: —
- Gemini 4 Argon: 60.3 (#1)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| LMArena Non-English | — | 1523 |
| LMArena Chinese | — | 1610 |
| LMArena Russian | — | 1537 |
| LMArena Spanish | — | 1497 |

## Instruction Following

- Devstral Small 2505: —
- Gemini 4 Argon: 80.1 (#2)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| LMArena Instruction Following | — | 1538 |

## Long Context

- Devstral Small 2505: —
- Gemini 4 Argon: 47.6 (#15)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| LMArena Longer Query | — | 1549 |

## Writing & Preference

- Devstral Small 2505: —
- Gemini 4 Argon: 71.4 (#19)

| Benchmark | Devstral Small 2505 | Gemini 4 Argon |
|---|---|---|
| LMArena Text | — | 1534 |
| LMArena Creative Writing | — | 1531 |
| LMArena Multi-Turn | — | 1557 |

## FAQ

### Is Devstral Small 2505 better than Gemini 4 Argon?

Gemini 4 Argon is the stronger model overall, scoring 56.5 to 34.3 on the Noometry Index.

### Is Devstral Small 2505 or Gemini 4 Argon better for coding?

Gemini 4 Argon scores higher on coding benchmarks: 62.0 versus 38.9 in the Noometry coding category.

### How many benchmarks do Devstral Small 2505 and Gemini 4 Argon share?

2 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Gemini 4 Argon has 21.