Model comparison
C4ai Aya Expanse 32b vs GPT-5.3 Chat
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 35.9 on the Noometry Index.
Last verified . 17 shared benchmarks.
CohereSummary
- They share 17 benchmarks with published results for both. C4ai Aya Expanse 32b scores higher in 0 categories and GPT-5.3 Chat in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where GPT-5.3 Chat leads 63.1 to 42.2.
- C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.
Side by side
| C4ai Aya Expanse 32b | GPT-5.3 Chat | |
|---|---|---|
| Provider | Cohere | OpenAI |
| Noometry Index | 35.9 | 42.8 |
| Released | 2024-10-24 | 2026-03-03 |
| Weights | Open | Proprietary |
| Context window | 128K | 128K |
| Max output | 4K | 16K |
| Input $ / M tokens | — | $1.75 |
| Output $ / M tokens | — | $14 |
| Results tracked | 18 | 18 |
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Category by category
Coding GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 34.8 (#231), GPT-5.3 Chat: 41.4 (#124)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1197 | 1408 |
Reasoning GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 23.3 (#180), GPT-5.3 Chat: 28.5 (#102)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1193 | 1399 |
Math GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 34.0 (#197), GPT-5.3 Chat: 38.2 (#142)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | 1200 | 1389 |
Knowledge GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 33.2 (#206), GPT-5.3 Chat: 38.8 (#140)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | 1182 | 1397 |
| Vectara Hallucination Rate | 10.9% | — |
Multilingual GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 38.4 (#230), GPT-5.3 Chat: 50.3 (#124)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1213 | 1382 |
| LMArena Chinese | 1211 | 1432 |
| LMArena French | 1248 | 1397 |
| LMArena German | 1199 | 1384 |
| LMArena Japanese | 1163 | 1352 |
| LMArena Korean | 1158 | 1346 |
| LMArena Russian | 1227 | 1400 |
| LMArena Spanish | 1193 | 1371 |
Instruction Following GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 62.6 (#237), GPT-5.3 Chat: 72.8 (#129)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1196 | 1378 |
Long Context GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 37.2 (#220), GPT-5.3 Chat: 42.6 (#120)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1228 | 1396 |
Writing & Preference GPT-5.3 Chat leads
C4ai Aya Expanse 32b: 42.2 (#235), GPT-5.3 Chat: 63.1 (#68)
| Benchmark | C4ai Aya Expanse 32b | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1224 | 1389 |
| LMArena Creative Writing | 1200 | 1355 |
| LMArena Multi-Turn | 1190 | 1412 |
| EQ-Bench Creative Writing | — | 1690 |
Frequently asked questions
Is C4ai Aya Expanse 32b better than GPT-5.3 Chat?
GPT-5.3 Chat is the stronger model overall, scoring 42.8 to 35.9 on the Noometry Index.
Is C4ai Aya Expanse 32b or GPT-5.3 Chat better for coding?
GPT-5.3 Chat scores higher on coding benchmarks: 41.4 versus 34.8 in the Noometry coding category.
Which has the bigger context window?
Both accept 128K tokens.
How many benchmarks do C4ai Aya Expanse 32b and GPT-5.3 Chat share?
17 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and GPT-5.3 Chat has 18.