# Ministral 8B vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 27.8 on the Noometry Index. Ministral 8B costs 350× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/ministral-8b-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Ministral 8B scores higher in 0 categories and o3-pro in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in long context, where o3-pro leads 72.1 to 36.7.
- The biggest single-benchmark swing is DTBench: 45.7% for Ministral 8B and 86.9% for o3-pro.
- Ministral 8B is cheaper at $0.10 / $0.10 per million input/output tokens, against $20 / $80 for o3-pro.
- o3-pro accepts more context: 200K tokens versus 128K.
- Ministral 8B has downloadable open weights; the other is API-only.

## Snapshot

| | Ministral 8B | o3-pro |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 27.8 | 42.7 |
| Rank | 321 | 94 |
| Context | 128K | 200K |
| Input $/M | $0.10 | $20 |
| Output $/M | $0.10 | $80 |
| Weights | Open | Proprietary |

## Coding

- Ministral 8B: 34.4 (#226)
- o3-pro: 55.1 (#22)

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1202 | — |

## Agentic & Tool Use

- Ministral 8B: 16.2 (#140)
- o3-pro: —

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| Berkeley Function Calling Leaderboard | 11.1% | — |

## Reasoning

- Ministral 8B: 17.7 (#279)
- o3-pro: 24.1 (#152)

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| DTBench | 45.7% | 86.9% |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1191 | — |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Math

- Ministral 8B: 23.7 (#262)
- o3-pro: —

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| LMArena Math | 1188 | — |
| MATH Level 5 | 14.9% | — |

## Knowledge

- Ministral 8B: 12.5 (#292)
- o3-pro: 29.0 (#234)

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| Vectara Hallucination Rate | 7.4% | 23.3% |
| GPQA Diamond | 27.1% | — |
| Confabulations | — | 14.2% |
| LMArena Expert | 1170 | — |

## Multilingual

- Ministral 8B: 35.3 (#242)
- o3-pro: —

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| LMArena Non-English | 1165 | — |
| LMArena Chinese | 1193 | — |
| LMArena Russian | 1195 | — |

## Instruction Following

- Ministral 8B: 60.7 (#245)
- o3-pro: —

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1161 | — |

## Long Context

- Ministral 8B: 36.7 (#222)
- o3-pro: 72.1 (#1)

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1212 | — |

## Writing & Preference

- Ministral 8B: 39.8 (#241)
- o3-pro: 57.1 (#128)

| Benchmark | Ministral 8B | o3-pro |
|---|---|---|
| LMArena Text | 1191 | — |
| LMArena Creative Writing | 1175 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1166 | — |

## FAQ

### Is Ministral 8B better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 27.8 on the Noometry Index. Ministral 8B costs 350× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

### Which is cheaper, Ministral 8B or o3-pro?

Ministral 8B is cheaper. It lists at $0.10 per million input tokens and $0.10 per million output tokens; o3-pro lists at $20 and $80.

### Is Ministral 8B or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 34.4 in the Noometry coding category.

### Which has the bigger context window?

o3-pro does, with 200K tokens against 128K.

### How many benchmarks do Ministral 8B and o3-pro share?

2 benchmarks have published results for both models. Ministral 8B has 17 scored results on Noometry and o3-pro has 12.