Model comparison
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.
Last verified . 11 shared benchmarks.
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.
Side by side
| GPT-5.3 Chat | Granite 4.2 3b | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 42.8 | 39.4 |
| Released | 2026-03-03 | — |
| Weights | Proprietary | Open |
| Context window | 128K | — |
| Max output | 16K | — |
| Input $ / M tokens | $1.75 | — |
| Output $ / M tokens | $14 | — |
| Results tracked | 18 | 11 |
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Category by category
Coding GPT-5.3 Chat leads
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 leads
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 Not comparable
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 leads
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 leads
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 leads
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 leads
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 leads
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 | — |
Frequently asked questions
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.