# Devstral Small 2505 vs Seed 2.0 Pro

> Seed 2.0 Pro is the stronger model overall, scoring 42.5 to 33.9 on the Noometry Index. Devstral Small 2505 costs 7.5× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/devstral-small-vs-dola-seed-2-0-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where Seed 2.0 Pro leads 42.9 to 38.6.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
- Seed 2.0 Pro accepts more context: 256K tokens versus 128K.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| Provider | Mistral AI | ByteDance Seed |
| Noometry Index | 33.9 | 42.5 |
| Rank | 228 | 97 |
| Context | 128K | 256K |
| Input $/M | $0.10 | $0.50 |
| Output $/M | $0.30 | $3 |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.6 (#160)
- Seed 2.0 Pro: 42.9 (#84)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 1472 |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- Seed 2.0 Pro: 23.1 (#167)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| NYT Connections (extended) | — | 28.4% |
| CritPt | 0% | — |
| Thematic Generalization | — | 57.1% |
| LMArena Hard Prompts | — | 1453 |

## Math

- Devstral Small 2505: —
- Seed 2.0 Pro: 36.5 (#110)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Math | — | 1440 |

## Knowledge

- Devstral Small 2505: —
- Seed 2.0 Pro: 39.6 (#119)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Expert | — | 1440 |

## Multimodal

- Devstral Small 2505: —
- Seed 2.0 Pro: 40.8 (#34)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Vision | — | 1275 |

## Multilingual

- Devstral Small 2505: —
- Seed 2.0 Pro: 54.8 (#37)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Non-English | — | 1442 |
| LMArena Chinese | — | 1490 |
| LMArena French | — | 1470 |
| LMArena German | — | 1443 |
| LMArena Japanese | — | 1408 |
| LMArena Korean | — | 1412 |
| LMArena Russian | — | 1450 |
| LMArena Spanish | — | 1460 |

## Instruction Following

- Devstral Small 2505: —
- Seed 2.0 Pro: 74.7 (#86)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Instruction Following | — | 1414 |

## Long Context

- Devstral Small 2505: —
- Seed 2.0 Pro: 43.6 (#85)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Longer Query | — | 1428 |

## Writing & Preference

- Devstral Small 2505: —
- Seed 2.0 Pro: 63.0 (#66)

| Benchmark | Devstral Small 2505 | Seed 2.0 Pro |
|---|---|---|
| LMArena Text | — | 1448 |
| LMArena Creative Writing | — | 1406 |
| LMArena Multi-Turn | — | 1441 |

## FAQ

### Is Devstral Small 2505 better than Seed 2.0 Pro?

Seed 2.0 Pro is the stronger model overall, scoring 42.5 to 33.9 on the Noometry Index. Devstral Small 2505 costs 7.5× less per token, which makes it the better buy when Seed 2.0 Pro's lead doesn't matter for your workload.

### Which is cheaper, Devstral Small 2505 or Seed 2.0 Pro?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.

### Is Devstral Small 2505 or Seed 2.0 Pro better for coding?

Seed 2.0 Pro scores higher on coding benchmarks: 42.9 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

Seed 2.0 Pro does, with 256K tokens against 128K.

### How many benchmarks do Devstral Small 2505 and Seed 2.0 Pro share?

0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Seed 2.0 Pro has 20.