# GPT-5.4 vs Qwen3.8-27B

> Side-by-side benchmark comparison for GPT-5.4 and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-4-vs-qwen3-8-27b
- Last updated: September 28, 2026

- Shared sourced benchmarks: 9
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick GPT-5.4 if you want the stronger benchmark profile. Qwen3.8-27B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.4 leads overall 68.42 to 55.26.
- The clearest category separation is in reasoning, where the averages are 60.6 for GPT-5.4 and 78.7 for Qwen3.8-27B.
- The biggest single benchmark swing is HLE in Knowledge, with scores of 52.1% and 30.8%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.4 also has the larger context window at 1.05M.

## Model Snapshot

| Property | GPT-5.4 | Qwen3.8-27B |
|----------|----------|----------|
| Creator | OpenAI | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1.05M | 262K |
| Overall Score | 68.42 | 55.26 |
| Benchmarks Covered | 38 | 33 |
| Pricing (input/output) | $2.50 / $15.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Qwen3.8-27B
- GPT-5.4 public-lane score: 47.8 (Supported · #41/117)
- Qwen3.8-27B public-lane score: 61.2 (Supported · #18/117)

| Benchmark | GPT-5.4 | Qwen3.8-27B | 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% | 84.3% | Qwen3.8-27B |
| 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% | 33.4% | GPT-5.4 |
| ExploitGym | 6.0% | Coming soon | Coming soon |
| ApprenticeBench | 11% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 73.0% | Coming soon |
| CoWorkBench | Coming soon | 70.7% | Coming soon |
| Agents' Last Exam | Coming soon | 42.9% | Coming soon |
| WebArena-Verified | Coming soon | 64.8% | Coming soon |
| AndroidWorld | Coming soon | 81.9% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 58.4% | Coming soon |

### Coding

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 49.6 (Supported · #40/142)
- Qwen3.8-27B public-lane score: 48.7 (Supported · #45/142)

| Benchmark | GPT-5.4 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 87.5% | Coming soon | Coming soon |
| SWE-bench Pro | 57.7% | 61.7% | Qwen3.8-27B |
| React Native Evals | 85.3% | Coming soon | Coming soon |
| Vibe Code Bench | 67.42% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 73.0% | Coming soon |
| NL2Repo | Coming soon | 42.3% | Coming soon |
| DeepSWE | Coming soon | 42.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.3% | Coming soon |
| VulcanBench v3 | Coming soon | 82.6% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 84.0% | Coming soon |
| SWE-bench (Vals) | Coming soon | 86.0% | Coming soon |

### Reasoning

- Winner: Directional only
- GPT-5.4 public-lane score: 60.6 (#21/27)
- Qwen3.8-27B public-lane score: 78.7 (#8/27)

| Benchmark | GPT-5.4 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 74.0% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.2% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- GPT-5.4 public-lane score: 69.3 (#21/50)
- Qwen3.8-27B public-lane score: 80.9 (#11/50)

| Benchmark | GPT-5.4 | Qwen3.8-27B | 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% | 90.2% | Qwen3.8-27B |
| ERQA | 65.4% | 65.5% | Qwen3.8-27B |
| 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 |
| MathVision | Coming soon | 90.0% | Coming soon |
| MathVision w/ Python | Coming soon | 94.6% | Coming soon |
| BabyVision | Coming soon | 65.7% | Coming soon |
| BabyVision w/ Python | Coming soon | 85.6% | Coming soon |
| Vision2Web | Coming soon | 62.9% | Coming soon |
| CharXiv w/o tools | Coming soon | 83.7% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 91.1% | Coming soon |
| RealWorldQA | Coming soon | 85.9% | Coming soon |

### Knowledge

- Winner: GPT-5.4
- GPT-5.4 public-lane score: 66.7 (Supported · #19/168)
- Qwen3.8-27B public-lane score: 49.2 (Supported · #63/168)

| Benchmark | GPT-5.4 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 92.8% | 89.2% | GPT-5.4 |
| HLE | 52.1% | 30.8% | GPT-5.4 |
| HLE w/o tools | 39.8% | 30.8% | GPT-5.4 |
| GPQA-D | 92.8% | 89.2% | GPT-5.4 |
| HealthBench Hard | 40.1% | Coming soon | Coming soon |
| MedXpertQA (Text) | 59.6% | Coming soon | Coming soon |
| HealthBench Professional | 48.1% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 88.9% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 84.3% | Coming soon |

### Instruction Following

- Winner: Directional only
- GPT-5.4 public-lane score: 89.2 (#19/124)
- Qwen3.8-27B public-lane score: 83.2 (#45/124)

| Benchmark | GPT-5.4 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

### Mathematics

- Winner: Not comparable
- GPT-5.4 public-lane score: 64.4 (Unranked · 2 rankable rows)
- Qwen3.8-27B public-lane score: Coming soon

| Benchmark | GPT-5.4 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 47.600% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 27.100% | Coming soon | Coming soon |

## FAQ

### Which is better overall, GPT-5.4 or Qwen3.8-27B?

GPT-5.4 is ahead overall on BenchLM right now.

### Where is the biggest gap between GPT-5.4 and Qwen3.8-27B?

The widest category gap is in reasoning, where the averages are 60.6 for GPT-5.4 and 78.7 for Qwen3.8-27B.

### How many benchmarks does GPT-5.4 cover on BenchLM?

GPT-5.4 currently has 38 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.8-27B cover on BenchLM?

Qwen3.8-27B currently has 33 sourced benchmark scores on BenchLM.

## Related Comparisons

- [GPT-5.4 vs GPT-5.4 Pro](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Qwen3.8-27B vs GPT-5.4 Pro](/compare/gpt-5-4-pro-vs-qwen3-8-27b)
- [GPT-5.4 vs GPT-5.4 mini](/compare/gpt-5-4-vs-gpt-5-4-mini)
- [Qwen3.8-27B vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-qwen3-8-27b)

## Explore More

- [GPT-5.4 profile](/models/gpt-5-4)
- [Qwen3.8-27B profile](/models/qwen3-8-27b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)