# 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 293× less per token, which makes it the better buy when GPT-5.4 Pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/gpt-5-4-pro-vs-hy3
- Last updated: 2026-10-11
- Shared benchmarks: 0

## Summary

- The widest gap is in reasoning, where GPT-5.4 Pro leads 70.7 to 26.1.
- Hy3 is cheaper at $0.13 / $0.53 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.

## Snapshot

| | GPT-5.4 Pro | Hy3 |
|---|---|---|
| Provider | OpenAI | Tencent |
| Noometry Index | 58.9 | 44.2 |
| Rank | 18 | 79 |
| Context | 1.05M | 262K |
| Input $/M | $30 | $0.13 |
| Output $/M | $180 | $0.53 |
| Weights | Proprietary | Open |

## Coding

- 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: 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: 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: 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

- 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

- GPT-5.4 Pro: —
- Hy3: 75.1 (#70)

| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Instruction Following | — | 1426 |

## Long Context

- GPT-5.4 Pro: —
- Hy3: 44.1 (#75)

| Benchmark | GPT-5.4 Pro | Hy3 |
|---|---|---|
| LMArena Longer Query | — | 1442 |

## Writing & Preference

- 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 |

## FAQ

### 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 293× 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 $0.13 per million input tokens and $0.53 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.