# GPT-5.4 nano vs Hy-MT1.5-1.8B-1.25bit

> Side-by-side benchmark comparison for GPT-5.4 nano and Hy-MT1.5-1.8B-1.25bit across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-nano-vs-hy-mt1-5-1-8b-1-25bit
- Last updated: September 18, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-5.4 nano and Hy-MT1.5-1.8B-1.25bit.

## Summary

- GPT-5.4 nano and Hy-MT1.5-1.8B-1.25bit do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit |
|----------|----------|----------|
| Creator | OpenAI | Tencent Hunyuan |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 400K | 262K |
| Independent public score (not head-to-head) | 59.42 | null |
| Benchmarks Covered | 18 | 0 |
| Pricing (input/output) | $0.20 / $1.25 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 34.5 (Supported · #137/154)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit | 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 |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 37.1 (Supported · #129/154)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| 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 |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 23.8 (#45/48)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 66.1% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 69.5% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 73.7 (Unranked · 2 rankable rows)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 47.5 (Supported · #98/184)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 82.8% | Coming soon | Coming soon |
| HLE | 37.7% | Coming soon | Coming soon |
| 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: 91.9 (#9/124)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.4 nano public-lane score: 43.8 (Unranked · 2 rankable rows)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 nano | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 25.860% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 6.250% | Coming soon | Coming soon |

## FAQ

### Can I compare GPT-5.4 nano and Hy-MT1.5-1.8B-1.25bit on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [GPT-5.4 nano vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-nano)
- [Hy-MT1.5-1.8B-1.25bit vs GPT-5.4](/compare/gpt-5-4-vs-hy-mt1-5-1-8b-1-25bit)
- [GPT-5.4 nano vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-4-nano)
- [Hy-MT1.5-1.8B-1.25bit vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-hy-mt1-5-1-8b-1-25bit)

## Explore More

- [GPT-5.4 nano profile](/models/gpt-5-4-nano)
- [Hy-MT1.5-1.8B-1.25bit profile](/models/hy-mt1-5-1-8b-1-25bit)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)