# Granite 3.1 2b Instruct vs o3-pro

> o3-pro is the stronger model overall, scoring 42.7 to 32.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/granite-3-1-2b-instruct-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in long context, where o3-pro leads 72.1 to 35.0.
- Granite 3.1 2b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| Provider | IBM | OpenAI |
| Noometry Index | 32.6 | 42.7 |
| Rank | 243 | 94 |
| Context | — | 200K |
| Input $/M | — | $20 |
| Output $/M | — | $80 |
| Weights | Open | Proprietary |

## Coding

- Granite 3.1 2b Instruct: 32.9 (#255)
- o3-pro: 55.1 (#22)

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| WeirdML | — | 58.2% |
| LMArena Coding | 1149 | — |

## Reasoning

- Granite 3.1 2b Instruct: 21.0 (#206)
- o3-pro: 24.1 (#152)

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| LMArena Hard Prompts | 1138 | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.43 |

## Math

- Granite 3.1 2b Instruct: 30.6 (#206)
- o3-pro: —

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| LMArena Math | 1159 | — |

## Knowledge

- Granite 3.1 2b Instruct: 30.3 (#223)
- o3-pro: 29.0 (#234)

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |
| LMArena Expert | 1131 | — |

## Multilingual

- Granite 3.1 2b Instruct: 29.2 (#264)
- o3-pro: —

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| LMArena Non-English | 1068 | — |
| LMArena Chinese | 1138 | — |
| LMArena Russian | 1063 | — |

## Instruction Following

- Granite 3.1 2b Instruct: 58.0 (#259)
- o3-pro: —

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| LMArena Instruction Following | 1116 | — |

## Long Context

- Granite 3.1 2b Instruct: 35.0 (#239)
- o3-pro: 72.1 (#1)

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |
| LMArena Longer Query | 1155 | — |

## Writing & Preference

- Granite 3.1 2b Instruct: 34.3 (#269)
- o3-pro: 57.1 (#128)

| Benchmark | Granite 3.1 2b Instruct | o3-pro |
|---|---|---|
| LMArena Text | 1127 | — |
| LMArena Creative Writing | 1116 | — |
| Short-Story Creative Writing | — | 84.4% |
| LMArena Multi-Turn | 1099 | — |

## FAQ

### Is Granite 3.1 2b Instruct better than o3-pro?

o3-pro is the stronger model overall, scoring 42.7 to 32.6 on the Noometry Index.

### Is Granite 3.1 2b Instruct or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.1 versus 32.9 in the Noometry coding category.

### How many benchmarks do Granite 3.1 2b Instruct and o3-pro share?

0 benchmarks have published results for both models. Granite 3.1 2b Instruct has 12 scored results on Noometry and o3-pro has 12.