# GPT-5.3 Codex vs Granite 4.1 8b

> GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 37.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-codex-vs-granite-4-1-8b
- Last updated: 2026-10-10
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. GPT-5.3 Codex scores higher in 1 category and Granite 4.1 8b in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in coding, where GPT-5.3 Codex leads 48.6 to 30.1.
- Granite 4.1 8b has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 45.8 | 37.4 |
| Rank | 69 | 205 |
| Context | 400K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Codex: 48.6 (#56)
- Granite 4.1 8b: 30.1 (#297)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena WebDev | 1409 | 1192 |
| SWE-bench Verified | 74.8% | — |
| WeirdML | 79.3% | — |
| LMArena Coding | — | 1312 |
| ALE-Bench | 1,655 | — |

## Agentic & Tool Use

- GPT-5.3 Codex: 48.0 (#9)
- Granite 4.1 8b: —

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| Terminal-Bench | 78.4% | — |
| METR Time Horizons | 74.5% | — |
| Vending-Bench 2 | 5,940 | — |

## Reasoning

- GPT-5.3 Codex: —
- Granite 4.1 8b: 25.7 (#143)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Hard Prompts | — | 1293 |
| Epoch Capabilities Index | 156.77 | — |

## Math

- GPT-5.3 Codex: —
- Granite 4.1 8b: 36.4 (#166)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Math | — | 1312 |

## Knowledge

- GPT-5.3 Codex: —
- Granite 4.1 8b: 36.1 (#174)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Expert | — | 1309 |

## Multilingual

- GPT-5.3 Codex: —
- Granite 4.1 8b: 41.7 (#204)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Non-English | — | 1261 |
| LMArena Chinese | — | 1337 |
| LMArena Russian | — | 1240 |

## Instruction Following

- GPT-5.3 Codex: —
- Granite 4.1 8b: 66.9 (#203)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Instruction Following | — | 1269 |

## Long Context

- GPT-5.3 Codex: —
- Granite 4.1 8b: 38.7 (#193)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Longer Query | — | 1275 |

## Writing & Preference

- GPT-5.3 Codex: —
- Granite 4.1 8b: 48.1 (#204)

| Benchmark | GPT-5.3 Codex | Granite 4.1 8b |
|---|---|---|
| LMArena Text | — | 1290 |
| LMArena Creative Writing | — | 1251 |
| LMArena Multi-Turn | — | 1268 |

## FAQ

### Is GPT-5.3 Codex better than Granite 4.1 8b?

GPT-5.3 Codex is the stronger model overall, scoring 45.8 to 37.4 on the Noometry Index.

### Is GPT-5.3 Codex or Granite 4.1 8b better for coding?

GPT-5.3 Codex scores higher on coding benchmarks: 48.6 versus 30.1 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Codex and Granite 4.1 8b share?

1 benchmark has published results for both models. GPT-5.3 Codex has 8 scored results on Noometry and Granite 4.1 8b has 13.