# GPT-5.3 Chat vs Granite 4.2 3b

> GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 39.4 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-granite-4-2-3b
- Last updated: 2026-10-12
- Shared benchmarks: 11

## Summary

- They share 11 benchmarks with published results for both. GPT-5.3 Chat scores higher in 7 categories and Granite 4.2 3b in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 47.2.
- Granite 4.2 3b has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 42.8 | 39.4 |
| Rank | 109 | 169 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Chat: 41.4 (#124)
- Granite 4.2 3b: 40.0 (#151)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Coding | 1408 | 1361 |

## Reasoning

- GPT-5.3 Chat: 28.5 (#102)
- Granite 4.2 3b: 26.0 (#138)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1306 |

## Math

- GPT-5.3 Chat: 38.2 (#142)
- Granite 4.2 3b: —

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Math | 1389 | — |

## Knowledge

- GPT-5.3 Chat: 38.8 (#140)
- Granite 4.2 3b: 36.3 (#171)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Expert | 1397 | 1315 |

## Multilingual

- GPT-5.3 Chat: 50.3 (#124)
- Granite 4.2 3b: 42.1 (#198)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Non-English | 1382 | 1268 |
| LMArena Chinese | 1432 | 1269 |
| LMArena Russian | 1400 | 1249 |
| LMArena French | 1397 | — |
| LMArena German | 1384 | — |
| LMArena Japanese | 1352 | — |
| LMArena Korean | 1346 | — |
| LMArena Spanish | 1371 | — |

## Instruction Following

- GPT-5.3 Chat: 72.8 (#129)
- Granite 4.2 3b: 67.1 (#200)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Instruction Following | 1378 | 1273 |

## Long Context

- GPT-5.3 Chat: 42.6 (#120)
- Granite 4.2 3b: 39.2 (#185)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Longer Query | 1396 | 1291 |

## Writing & Preference

- GPT-5.3 Chat: 63.1 (#68)
- Granite 4.2 3b: 47.2 (#212)

| Benchmark | GPT-5.3 Chat | Granite 4.2 3b |
|---|---|---|
| LMArena Text | 1389 | 1293 |
| LMArena Creative Writing | 1355 | 1205 |
| LMArena Multi-Turn | 1412 | 1290 |
| EQ-Bench Creative Writing | 1690 | — |

## FAQ

### Is GPT-5.3 Chat better than Granite 4.2 3b?

GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 39.4 on the Noometry Index.

### Is GPT-5.3 Chat or Granite 4.2 3b better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 40.0 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Chat and Granite 4.2 3b share?

11 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Granite 4.2 3b has 11.