Model comparison
GPT-5.4 Pro vs Hy3
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 44.2 on the Noometry Index. Hy3 costs 468× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
TencentSummary
- The widest gap is in reasoning, where GPT-5.4 Pro leads 70.7 to 26.1.
- Hy3 is cheaper at $0.0825 / $0.33 per million input/output tokens, against $30 / $180 for GPT-5.4 Pro.
- GPT-5.4 Pro accepts more context: 1.05M tokens versus 262K.
- Hy3 has downloadable open weights; the other is API-only.
Side by side
| GPT-5.4 Pro | Hy3 | |
|---|---|---|
| Provider | OpenAI | Tencent |
| Noometry Index | 58.9 | 44.2 |
| Released | 2026-03-05 | 2026-07-06 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 262K |
| Max output | 128K | 128K |
| Input $ / M tokens | $30 | $0.0825 |
| Output $ / M tokens | $180 | $0.33 |
| Results tracked | 16 | 19 |
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Category by category
Coding Hy3 leads
GPT-5.4 Pro: 43.2 (#90), Hy3: 46.8 (#63)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena WebDev | — | 1508 |
| WeirdML | 57.4% | — |
| LMArena Coding | — | 1464 |
Reasoning GPT-5.4 Pro leads
GPT-5.4 Pro: 70.7 (#13), Hy3: 26.1 (#136)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| ARC-AGI-2 | 83.3% | — |
| SimpleBench | 74.1% | — |
| NYT Connections (extended) | — | 41.2% |
| ARC-AGI-1 | 94.5% | — |
| CritPt | 30% | — |
| Chess Puzzles | 58.6% | — |
| EnigmaEval | 23.8% | — |
| LMArena Hard Prompts | — | 1447 |
| Epoch Capabilities Index | 158.93 | — |
Math GPT-5.4 Pro leads
GPT-5.4 Pro: 72.4 (#22), Hy3: 40.1 (#93)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 82.5% | — |
| FrontierMath Tier 4 | 58.5% | — |
| LMArena Math | — | 1475 |
| FrontierMath (Feb 2025 set) | 50% | — |
| FrontierMath Tier 4 (v1) | 37.5% | — |
Knowledge GPT-5.4 Pro leads
GPT-5.4 Pro: 68.3 (#7), Hy3: 40.8 (#114)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| GPQA Diamond | 94.6% | — |
| Humanity's Last Exam | 44.3% | — |
| SimpleQA Verified | 46.3% | — |
| Vectara Hallucination Rate | 8.3% | — |
| LMArena Expert | — | 1460 |
Multilingual Not comparable
GPT-5.4 Pro: —, Hy3: 53.5 (#65)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Non-English | — | 1426 |
| LMArena Chinese | — | 1493 |
| LMArena French | — | 1461 |
| LMArena German | — | 1439 |
| LMArena Japanese | — | 1392 |
| LMArena Korean | — | 1395 |
| LMArena Russian | — | 1432 |
| LMArena Spanish | — | 1456 |
Instruction Following Not comparable
GPT-5.4 Pro: —, Hy3: 75.1 (#70)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Instruction Following | — | 1426 |
Long Context Not comparable
GPT-5.4 Pro: —, Hy3: 44.1 (#75)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Longer Query | — | 1442 |
Writing & Preference Not comparable
GPT-5.4 Pro: —, Hy3: 62.2 (#81)
| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Text | — | 1439 |
| LMArena Creative Writing | — | 1402 |
| LMArena Multi-Turn | — | 1436 |
Frequently asked questions
Is GPT-5.4 Pro better than Hy3?
GPT-5.4 Pro is the stronger model overall, scoring 58.9 to 44.2 on the Noometry Index. Hy3 costs 468× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.
Which is cheaper, GPT-5.4 Pro or Hy3?
Hy3 is cheaper. It lists at $0.0825 per million input tokens and $0.33 per million output tokens; GPT-5.4 Pro lists at $30 and $180.
Is GPT-5.4 Pro or Hy3 better for coding?
Hy3 scores higher on coding benchmarks: 46.8 versus 43.2 in the Noometry coding category.
Which has the bigger context window?
GPT-5.4 Pro does, with 1.05M tokens against 262K.
How many benchmarks do GPT-5.4 Pro and Hy3 share?
0 benchmarks have published results for both models. GPT-5.4 Pro has 16 scored results on Noometry and Hy3 has 19.