# Devstral Small 2505 vs GPT-6.1 Sol

> Devstral Small 2505 has enough public results to be ranked (#228); GPT-6.1 Sol does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/devstral-small-vs-gpt-6-1-sol
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where GPT-6.1 Sol leads 51.4 to 38.6.
- Devstral Small 2505 is cheaper at $0.10 / $0.30 per million input/output tokens, against $2 / $10 for GPT-6.1 Sol.
- GPT-6.1 Sol accepts more context: 1.05M tokens versus 128K.
- Devstral Small 2505 has downloadable open weights; the other is API-only.

## Snapshot

| | Devstral Small 2505 | GPT-6.1 Sol |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 33.9 | 42.1 |
| Rank | 228 | — |
| Context | 128K | 1.05M |
| Input $/M | $0.10 | $2 |
| Output $/M | $0.30 | $10 |
| Weights | Open | Proprietary |

## Coding

- Devstral Small 2505: 38.6 (#160)
- GPT-6.1 Sol: 51.4

| Benchmark | Devstral Small 2505 | GPT-6.1 Sol |
|---|---|---|
| DeepSWE | — | 75.2% |
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |

## Agentic & Tool Use

- Devstral Small 2505: —
- GPT-6.1 Sol: 34.3

| Benchmark | Devstral Small 2505 | GPT-6.1 Sol |
|---|---|---|
| GDP.pdf | — | 32% |

## Reasoning

- Devstral Small 2505: 19.1 (#243)
- GPT-6.1 Sol: —

| Benchmark | Devstral Small 2505 | GPT-6.1 Sol |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | — |
| CritPt | 0% | — |

## FAQ

### Is Devstral Small 2505 better than GPT-6.1 Sol?

Devstral Small 2505 has enough public results to be ranked (#228); GPT-6.1 Sol does not yet, so treat this comparison as directional.

### Which is cheaper, Devstral Small 2505 or GPT-6.1 Sol?

Devstral Small 2505 is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; GPT-6.1 Sol lists at $2 and $10.

### Is Devstral Small 2505 or GPT-6.1 Sol better for coding?

GPT-6.1 Sol scores higher on coding benchmarks: 51.4 versus 38.6 in the Noometry coding category.

### Which has the bigger context window?

GPT-6.1 Sol does, with 1.05M tokens against 128K.

### How many benchmarks do Devstral Small 2505 and GPT-6.1 Sol share?

0 benchmarks have published results for both models. Devstral Small 2505 has 4 scored results on Noometry and GPT-6.1 Sol has 2.