Model comparison
GPT-5.3 Chat vs Granite 3.1 8b Instruct
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 32.4 on the Noometry Index.
Last verified . 12 shared benchmarks.
Summary
- They share 12 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Granite 3.1 8b Instruct in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 35.5.
- Granite 3.1 8b Instruct has downloadable open weights; the other is API-only.
Side by side
| GPT-5.3 Chat | Granite 3.1 8b Instruct | |
|---|---|---|
| Provider | OpenAI | IBM |
| Noometry Index | 42.8 | 32.4 |
| 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 | 13 |
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Category by category
Coding GPT-5.3 Chat leads
GPT-5.3 Chat: 41.4 (#124), Granite 3.1 8b Instruct: 34.5 (#233)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Coding | 1408 | 1186 |
Agentic & Tool Use Not comparable
GPT-5.3 Chat: —, Granite 3.1 8b Instruct: 24.1 (#120)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 27.1% |
Reasoning GPT-5.3 Chat leads
GPT-5.3 Chat: 28.5 (#102), Granite 3.1 8b Instruct: 22.1 (#207)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1145 |
Math GPT-5.3 Chat leads
GPT-5.3 Chat: 38.2 (#142), Granite 3.1 8b Instruct: 33.0 (#209)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Math | 1389 | 1152 |
Knowledge GPT-5.3 Chat leads
GPT-5.3 Chat: 38.8 (#140), Granite 3.1 8b Instruct: 31.1 (#220)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Expert | 1397 | 1142 |
Multilingual GPT-5.3 Chat leads
GPT-5.3 Chat: 50.3 (#124), Granite 3.1 8b Instruct: 30.9 (#260)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Non-English | 1382 | 1099 |
| LMArena Chinese | 1432 | 1145 |
| LMArena Russian | 1400 | 1092 |
| 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 3.1 8b Instruct: 58.6 (#259)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Instruction Following | 1378 | 1131 |
Long Context GPT-5.3 Chat leads
GPT-5.3 Chat: 42.6 (#120), Granite 3.1 8b Instruct: 35.2 (#241)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Longer Query | 1396 | 1162 |
Writing & Preference GPT-5.3 Chat leads
GPT-5.3 Chat: 63.1 (#68), Granite 3.1 8b Instruct: 35.5 (#266)
| Benchmark | GPT-5.3 Chat | Granite 3.1 8b Instruct |
|---|---|---|
| LMArena Text | 1389 | 1150 |
| LMArena Creative Writing | 1355 | 1129 |
| LMArena Multi-Turn | 1412 | 1108 |
| EQ-Bench Creative Writing | 1690 | — |
Frequently asked questions
Is GPT-5.3 Chat better than Granite 3.1 8b Instruct?
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 32.4 on the Noometry Index.
Is GPT-5.3 Chat or Granite 3.1 8b Instruct better for coding?
GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 34.5 in the Noometry coding category.
How many benchmarks do GPT-5.3 Chat and Granite 3.1 8b Instruct share?
12 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Granite 3.1 8b Instruct has 13.