# Devstral Small vs o3

> Side-by-side benchmark comparison for Devstral Small and o3 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/devstral-small-vs-o3
- Last updated: October 14, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Devstral Small and o3.

## Summary

- Devstral Small and o3 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Devstral Small | o3 |
|----------|----------|----------|
| Creator | Mistral | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 200K |
| Independent public score (not head-to-head) | null | 45.41 |
| Benchmarks Covered | 1 | 1 |
| Pricing (input/output) | N/A | $2.00 / $8.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: Coming soon

| Benchmark | Devstral Small | o3 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 46.8% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: 77.2 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: 67.8 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: 48.5 (Estimated · #86/181)

### Instruction Following

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: 87.4 (#37/128)

### Mathematics

- Winner: Insufficient shared evidence
- Devstral Small public-lane score: Coming soon
- o3 public-lane score: 48.5 (Unranked · 1 rankable row)

| Benchmark | Devstral Small | o3 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 33.333% | Coming soon |

## FAQ

### Can I compare Devstral Small and o3 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Devstral Small vs o3-pro](/compare/devstral-small-vs-o3-pro)
- [o3 vs o3-pro](/compare/o3-vs-o3-pro)
- [Devstral Small vs o3-mini](/compare/devstral-small-vs-o3-mini)
- [o3 vs o3-mini](/compare/o3-vs-o3-mini)

## Explore More

- [Devstral Small profile](/models/devstral-small)
- [o3 profile](/models/o3)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)