# GPT-5.4 nano vs Hy4

> Side-by-side benchmark comparison for GPT-5.4 nano and Hy4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-nano-vs-hy4
- Last updated: November 4, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: GPT-5.4 nano and Hy4 share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-5.4 nano has the lower published output-token price.
- Hy4 has the larger published context window at 1M.

## Model Snapshot

| Property | GPT-5.4 nano | Hy4 |
|----------|----------|----------|
| Creator | OpenAI | Tencent |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 400K | 1M |
| Independent public score (not head-to-head) | 46.15 | null |
| Benchmarks Covered | 23 | 15 |
| Pricing (input/output) | $0.20 / $1.25 | $0.834 / $2.501 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 33.7 (Supported · #97/135)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 46.3% | Coming soon | Coming soon |
| OSWorld-Verified | 39% | Coming soon | Coming soon |
| MCP Atlas | 56.1% | Coming soon | Coming soon |
| Toolathlon | 35.5% | Coming soon | Coming soon |
| τ²-bench results | 92.5% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 41.6% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | Coming soon | 44.40% | Coming soon |
| Terminal-Bench-Science 0.1 | Coming soon | 19.8% | Coming soon |
| HLE w/ tools | Coming soon | 59.1% | Coming soon |
| Agents' Last Exam | Coming soon | 41.0% | Coming soon |
| APEX-Agents | Coming soon | 75.2% | Coming soon |
| AutomationBench | Coming soon | 56.2% | Coming soon |
| OSWorld 2.1 | Coming soon | 78.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 30.1 (Supported · #100/156)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 46.3% | Coming soon | Coming soon |
| Vibe Code Bench | 26.10% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 69.8% | Coming soon | Coming soon |
| DeepSWE | Coming soon | 74.9% | Coming soon |
| sweMarathon | Coming soon | 43.8% | Coming soon |
| ProgramBench | Coming soon | 30.0% | Coming soon |
| FrontierCode 2.0 | Coming soon | 31.0% | Coming soon |
| PostTrainBench v1.2 | Coming soon | 35.2% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 40.6 (Unranked · 4 rankable rows)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-1 | 51.50% | Coming soon | Coming soon |
| ARC-AGI-2 | 5.7% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 52.6 (#51/58)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| ExtractBench (LlamaIndex) | 74.90% | Coming soon | Coming soon |
| ParseBench | 43.35% | Coming soon | Coming soon |
| MMMU-Pro | 66.1% | 78.6% | Hy4 |
| MMMU-Pro w/ Python | 69.5% | Coming soon | Coming soon |
| ZeroBench w/ Python | Coming soon | 55.4% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 39.4 (Supported · #117/179)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 82.8% | Coming soon | Coming soon |
| HLE | 37.7% | 59.1% | Hy4 |
| HLE w/o tools | 24.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 77.5% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 77.2% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 93.3 (#12/157)
- Hy4 public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 52.3 (Unranked · 2 rankable rows)
- Hy4 public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy4 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 44.912% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 12.195% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between GPT-5.4 nano and Hy4?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [GPT-5.4 nano vs GPT-5.4 Pro](/compare/gpt-5-4-nano-vs-gpt-5-4-pro)
- [Hy4 vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-hy4)
- [GPT-5.4 nano vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-nano)
- [Hy4 vs GPT-5.4](/compare/gpt-5-4-vs-hy4)

## Explore More

- [GPT-5.4 nano profile](/models/gpt-5-4-nano)
- [Hy4 profile](/models/hy4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)