# Mistral Nemo vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 25.9 on the Noometry Index. Mistral Nemo costs 233× 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/mistral-nemo-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Mistral Nemo scores higher in 0 categories and o3-pro in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where o3-pro leads 57.1 to 28.6.
- The biggest single-benchmark swing is DTBench: 48.6% for Mistral Nemo and 86.9% for o3-pro.
- Mistral Nemo is cheaper at $0.15 / $0.15 per million input/output tokens, against $20 / $80 for o3-pro.
- o3-pro accepts more context: 200K tokens versus 128K.
- Mistral Nemo has downloadable open weights; the other is API-only.

## Snapshot

| | Mistral Nemo | o3-pro |
|---|---|---|
| Provider | Mistral AI | OpenAI |
| Noometry Index | 25.9 | 42.7 |
| Rank | 332 | 94 |
| Context | 128K | 200K |
| Input $/M | $0.15 | $20 |
| Output $/M | $0.15 | $80 |
| Weights | Open | Proprietary |

## Coding

- Mistral Nemo: —
- o3-pro: 55.1 (#22)

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |

## Agentic & Tool Use

- Mistral Nemo: 23.3 (#118)
- o3-pro: —

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| Berkeley Function Calling Leaderboard | 27.6% | — |
| BALROG | 17.6% | — |

## Reasoning

- Mistral Nemo: 19.9 (#230)
- o3-pro: 24.1 (#152)

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| DTBench | 48.6% | 86.9% |
| Epoch Capabilities Index | 118.63 | 147.43 |
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMCA | — | 38.5% |
| PIQA | 83.5% | — |

## Math

- Mistral Nemo: 23.5 (#263)
- o3-pro: —

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| MATH Level 5 | 10.8% | — |
| GSM8K | 84.2% | — |

## Knowledge

- Mistral Nemo: 12.3 (#293)
- o3-pro: 29.0 (#234)

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| GPQA Diamond | 29.9% | — |
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| BoolQ | 82.5% | — |

## Long Context

- Mistral Nemo: —
- o3-pro: 72.1 (#1)

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |

## Writing & Preference

- Mistral Nemo: 28.6 (#291)
- o3-pro: 57.1 (#128)

| Benchmark | Mistral Nemo | o3-pro |
|---|---|---|
| Short-Story Creative Writing | — | 84.4% |
| EQ-Bench Creative Writing | 881 | — |

## FAQ

### Is Mistral Nemo better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 25.9 on the Noometry Index. Mistral Nemo costs 233× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

### Which is cheaper, Mistral Nemo or o3-pro?

Mistral Nemo is cheaper. It lists at $0.15 per million input tokens and $0.15 per million output tokens; o3-pro lists at $20 and $80.

### Which has the bigger context window?

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

### How many benchmarks do Mistral Nemo and o3-pro share?

2 benchmarks have published results for both models. Mistral Nemo has 10 scored results on Noometry and o3-pro has 12.