# GPT-5.1-Codex vs Granite 3.0 2b Instruct

> GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 30.2 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-1-codex-vs-granite-3-0-2b-instruct
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where GPT-5.1-Codex leads 41.7 to 27.8.
- Granite 3.0 2b Instruct has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 38.2 | 30.2 |
| Rank | 178 | 284 |
| Context | 400K | — |
| Input $/M | $1.25 | — |
| Output $/M | $10 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.1-Codex: 41.7 (#107)
- Granite 3.0 2b Instruct: 27.8 (#311)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| SWE-bench Verified (bash only) | 66% | — |
| LMArena WebDev | 1337 | — |
| BigCodeBench Instruct | — | 20.5% |
| LMArena Coding | — | 1090 |
| ALE-Bench | 1,245 | — |

## Agentic & Tool Use

- GPT-5.1-Codex: 37.8 (#32)
- Granite 3.0 2b Instruct: —

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| Terminal-Bench | 60.4% | — |
| METR Time Horizons | 70.8% | — |

## Reasoning

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 19.6 (#234)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Hard Prompts | — | 1073 |

## Math

- GPT-5.1-Codex: 29.3 (#218)
- Granite 3.0 2b Instruct: 29.7 (#215)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| ProofBench | 9% | — |
| LMArena Math | — | 1117 |

## Knowledge

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 28.4 (#238)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Expert | — | 1064 |

## Multilingual

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 27.1 (#273)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Non-English | — | 1033 |
| LMArena Chinese | — | 1070 |
| LMArena Russian | — | 1045 |

## Instruction Following

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 54.2 (#279)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Instruction Following | — | 1056 |

## Long Context

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 32.5 (#263)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Longer Query | — | 1071 |

## Writing & Preference

- GPT-5.1-Codex: —
- Granite 3.0 2b Instruct: 29.8 (#287)

| Benchmark | GPT-5.1-Codex | Granite 3.0 2b Instruct |
|---|---|---|
| LMArena Text | — | 1080 |
| LMArena Creative Writing | — | 1046 |
| LMArena Multi-Turn | — | 1053 |

## FAQ

### Is GPT-5.1-Codex better than Granite 3.0 2b Instruct?

GPT-5.1-Codex is the stronger model overall, scoring 38.2 to 30.2 on the Noometry Index.

### Is GPT-5.1-Codex or Granite 3.0 2b Instruct better for coding?

GPT-5.1-Codex scores higher on coding benchmarks: 41.7 versus 27.8 in the Noometry coding category.

### How many benchmarks do GPT-5.1-Codex and Granite 3.0 2b Instruct share?

0 benchmarks have published results for both models. GPT-5.1-Codex has 6 scored results on Noometry and Granite 3.0 2b Instruct has 13.