Model comparison
C4ai Aya Expanse 32b vs GPT-5 Pro
GPT-5 Pro is the stronger model overall, scoring 46.4 to 35.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
CohereSummary
- The widest gap is in knowledge, where GPT-5 Pro leads 56.7 to 33.2.
- GPT-5 Pro accepts more context: 400K tokens versus 128K.
- C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.
Side by side
| C4ai Aya Expanse 32b | GPT-5 Pro | |
|---|---|---|
| Provider | Cohere | OpenAI |
| Noometry Index | 35.9 | 46.4 |
| Released | 2024-10-24 | 2025-10-06 |
| Weights | Open | Proprietary |
| Context window | 128K | 400K |
| Max output | 4K | 272K |
| Input $ / M tokens | — | $15 |
| Output $ / M tokens | — | $120 |
| Results tracked | 18 | 12 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding GPT-5 Pro leads
C4ai Aya Expanse 32b: 34.8 (#231), GPT-5 Pro: 44.0 (#80)
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| WeirdML | — | 60.4% |
| LMArena Coding | 1197 | — |
| AlgoTune | — | 1.31 |
Reasoning GPT-5 Pro leads
C4ai Aya Expanse 32b: 23.3 (#180), GPT-5 Pro: 38.9 (#62)
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| ARC-AGI-2 | — | 18.3% |
| SimpleBench | — | 61.6% |
| Kagi LLM Benchmark | — | 76.8% |
| ARC-AGI-1 | — | 70.2% |
| EnigmaEval | — | 18.8% |
| LMArena Hard Prompts | 1193 | — |
| Epoch Capabilities Index | — | 150.28 |
Math GPT-5 Pro leads
C4ai Aya Expanse 32b: 34.0 (#197), GPT-5 Pro: 48.5 (#63)
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 19.5% |
| LMArena Math | 1200 | — |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge GPT-5 Pro leads
C4ai Aya Expanse 32b: 33.2 (#206), GPT-5 Pro: 56.7 (#42)
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| Humanity's Last Exam | — | 31.6% |
| Vectara Hallucination Rate | 10.9% | — |
| LMArena Expert | 1182 | — |
Multilingual Not comparable
C4ai Aya Expanse 32b: 38.4 (#230), GPT-5 Pro: —
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| LMArena Non-English | 1213 | — |
| LMArena Chinese | 1211 | — |
| LMArena French | 1248 | — |
| LMArena German | 1199 | — |
| LMArena Japanese | 1163 | — |
| LMArena Korean | 1158 | — |
| LMArena Russian | 1227 | — |
| LMArena Spanish | 1193 | — |
Instruction Following Not comparable
C4ai Aya Expanse 32b: 62.6 (#237), GPT-5 Pro: —
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| LMArena Instruction Following | 1196 | — |
Long Context Not comparable
C4ai Aya Expanse 32b: 37.2 (#220), GPT-5 Pro: —
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| LMArena Longer Query | 1228 | — |
Writing & Preference Not comparable
C4ai Aya Expanse 32b: 42.2 (#235), GPT-5 Pro: —
| Benchmark | C4ai Aya Expanse 32b | GPT-5 Pro |
|---|---|---|
| LMArena Text | 1224 | — |
| LMArena Creative Writing | 1200 | — |
| LMArena Multi-Turn | 1190 | — |
Frequently asked questions
Is C4ai Aya Expanse 32b better than GPT-5 Pro?
GPT-5 Pro is the stronger model overall, scoring 46.4 to 35.9 on the Noometry Index.
Is C4ai Aya Expanse 32b or GPT-5 Pro better for coding?
GPT-5 Pro scores higher on coding benchmarks: 44.0 versus 34.8 in the Noometry coding category.
Which has the bigger context window?
GPT-5 Pro does, with 400K tokens against 128K.
How many benchmarks do C4ai Aya Expanse 32b and GPT-5 Pro share?
0 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and GPT-5 Pro has 12.