Model comparison
Chatgpt 4o Latest 20250326 vs Hy4 preview
Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
TencentSummary
- The widest gap is in math, where Hy4 preview leads 55.7 to 38.6.
- Hy4 preview has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | Hy4 preview | |
|---|---|---|
| Provider | OpenAI | Tencent |
| Noometry Index | 43.8 | 45.3 |
| Released | — | 2026-08-28 |
| Weights | Proprietary | Open |
| Context window | — | 1.05M |
| Max output | — | 64K |
| Input $ / M tokens | — | $0.83 |
| Output $ / M tokens | — | $2.50 |
| Results tracked | 21 | 3 |
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Category by category
Coding Hy4 preview leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Hy4 preview: 51.6 (#38)
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena WebDev | — | 1632 |
| LMArena Coding | 1413 | — |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Hy4 preview: 31.9 (#79)
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | — | 68.2% |
| LMArena Hard Prompts | 1424 | — |
Math Hy4 preview leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Hy4 preview: 55.7 (#42)
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| ProofBench | — | 75% |
| LMArena Math | 1407 | — |
Knowledge Not comparable
Chatgpt 4o Latest 20250326: 39.2 (#137), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| Confabulations | 16.6% | — |
| LMArena Expert | 1401 | — |
Multimodal Not comparable
Chatgpt 4o Latest 20250326: 39.6 (#58), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena Vision | 1243 | — |
Multilingual Not comparable
Chatgpt 4o Latest 20250326: 52.9 (#76), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena Non-English | 1419 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1446 | — |
| LMArena German | 1423 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1396 | — |
| LMArena Russian | 1429 | — |
| LMArena Spanish | 1434 | — |
Instruction Following Not comparable
Chatgpt 4o Latest 20250326: 74.0 (#107), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena Instruction Following | 1403 | — |
Long Context Not comparable
Chatgpt 4o Latest 20250326: 43.1 (#107), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena Longer Query | 1413 | — |
Writing & Preference Not comparable
Chatgpt 4o Latest 20250326: 62.6 (#72), Hy4 preview: —
| Benchmark | Chatgpt 4o Latest 20250326 | Hy4 preview |
|---|---|---|
| LMArena Text | 1429 | — |
| LMArena Creative Writing | 1405 | — |
| EQ-Bench Creative Writing | 1501 | — |
| LMArena Multi-Turn | 1454 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Hy4 preview?
Hy4 preview is the stronger model overall, scoring 45.3 to 43.8 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Hy4 preview better for coding?
Hy4 preview scores higher on coding benchmarks: 51.6 versus 41.6 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Hy4 preview share?
0 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Hy4 preview has 3.