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

> Side-by-side benchmark comparison for GPT-5.4 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-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 and Hy-MT1.5-1.8B-1.25bit.

## Summary

- GPT-5.4 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 | Hy-MT1.5-1.8B-1.25bit |
|----------|----------|----------|
| Creator | OpenAI | Tencent Hunyuan |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 1.05M | 262K |
| Independent public score (not head-to-head) | 70.88 | null |
| Benchmarks Covered | 38 | 0 |
| Pricing (input/output) | $2.50 / $15.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 53.2 (Supported · #41/154)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 75.1% | Coming soon | Coming soon |
| CyberGym | 79.0% | Coming soon | Coming soon |
| BrowseComp | 82.7% | Coming soon | Coming soon |
| OSWorld-Verified | 75% | Coming soon | Coming soon |
| MCP Atlas | 70.6% | Coming soon | Coming soon |
| Toolathlon | 54.6% | Coming soon | Coming soon |
| τ²-bench results | 98.9% | Coming soon | Coming soon |
| Claw-Eval | 60.3% | Coming soon | Coming soon |
| DeepSearchQA | 73.6% | Coming soon | Coming soon |
| Gert Labs | 64.89% | Coming soon | Coming soon |
| ResearchClawBench | 15.3% | Coming soon | Coming soon |
| JobBench | 38.9% | Coming soon | Coming soon |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| ApprenticeBench | 11% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 53.8 (Supported · #43/154)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | Coming soon | Coming soon |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 69.3 (#20/48)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 81.2% | Coming soon | Coming soon |
| OfficeQA Pro | 53.2% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | 82.1% | Coming soon | Coming soon |
| CharXiv | 82.8% | Coming soon | Coming soon |
| ERQA | 65.4% | Coming soon | Coming soon |
| SimpleVQA | 61.1% | Coming soon | Coming soon |
| ScreenSpot Pro | 85.4% | Coming soon | Coming soon |
| ZeroBench | 41.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 77.1% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 57.2 (#17/20)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 69.2 (Supported · #16/184)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | Coming soon | Coming soon |
| HLE | 52.1% | Coming soon | Coming soon |
| HLE w/o tools | 39.8% | Coming soon | Coming soon |
| GPQA-D | 92.8% | Coming soon | Coming soon |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 89.2 (#19/124)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- GPT-5.4 public-lane score: 64.4 (Unranked · 2 rankable rows)
- Hy-MT1.5-1.8B-1.25bit public-lane score: Coming soon

| Benchmark | GPT-5.4 | Hy-MT1.5-1.8B-1.25bit | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 27.100% | Coming soon | Coming soon |

## FAQ

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

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [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)