# Grok 4.5 vs Qwen3.8-27B

> Side-by-side benchmark comparison for Grok 4.5 and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

Pick Grok 4.5 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

- Grok 4.5 leads overall 65.11 to 55.26.
- The clearest category separation is in reasoning, where the averages are 50.4 for Grok 4.5 and 78.7 for Qwen3.8-27B.
- The biggest single benchmark swing is Terminal-Bench 2.1 in Agentic, with scores of 83.3% and 73.0%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.5 also has the larger context window at 500K.

## Model Snapshot

| Property | Grok 4.5 | Qwen3.8-27B |
|----------|----------|----------|
| Creator | xAI | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 500K | 262K |
| Overall Score | 65.11 | 55.26 |
| Benchmarks Covered | 15 | 33 |
| Pricing (input/output) | $2.00 / $6.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Qwen3.8-27B
- Grok 4.5 public-lane score: 56.9 (Supported · #26/117)
- Qwen3.8-27B public-lane score: 61.2 (Supported · #18/117)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 15.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 83.3% | 73.0% | Grok 4.5 |
| deepSwe | 53% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 67.8% | 58.4% | Grok 4.5 |
| CoWorkBench | Coming soon | 70.7% | Coming soon |
| JobBench | Coming soon | 33.4% | Coming soon |
| Agents' Last Exam | Coming soon | 42.9% | Coming soon |
| OSWorld-Verified | Coming soon | 84.3% | Coming soon |
| WebArena-Verified | Coming soon | 64.8% | Coming soon |
| AndroidWorld | Coming soon | 81.9% | Coming soon |

### Coding

- Winner: Grok 4.5
- Grok 4.5 public-lane score: 58 (Supported · #21/142)
- Qwen3.8-27B public-lane score: 48.7 (Supported · #45/142)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 64.7% | 61.7% | Grok 4.5 |
| SWE Multilingual | 78% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 83.3% | 73.0% | Grok 4.5 |
| cursorBench32 | 66.7% | Coming soon | Coming soon |
| VulcanBench v3 | 89.9% | 82.6% | Grok 4.5 |
| LiveCodeBench (Vals) | 87.4% | 84.0% | Grok 4.5 |
| SWE-bench (Vals) | 86.6% | 86.0% | Grok 4.5 |
| NL2Repo | Coming soon | 42.3% | Coming soon |
| DeepSWE | Coming soon | 42.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 90.3% | Coming soon |

### Reasoning

- Winner: Directional only
- Grok 4.5 public-lane score: 50.4 (#27/27)
- Qwen3.8-27B public-lane score: 78.7 (#8/27)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 52.6% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.3% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Grok 4.5 public-lane score: 79.5 (Unranked · 1 rankable row)
- Qwen3.8-27B public-lane score: 80.9 (#11/50)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| 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 |
| CharXiv | Coming soon | 90.2% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 91.1% | Coming soon |
| RealWorldQA | Coming soon | 85.9% | Coming soon |
| ERQA | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Grok 4.5
- Grok 4.5 public-lane score: 67.2 (Supported · #17/168)
- Qwen3.8-27B public-lane score: 49.2 (Supported · #63/168)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 92.9% | 88.9% | Grok 4.5 |
| MMLU-Pro (Vals) | 89.2% | 84.3% | Grok 4.5 |
| GPQA | Coming soon | 89.2% | Coming soon |
| GPQA-D | Coming soon | 89.2% | Coming soon |
| HLE | Coming soon | 30.8% | Coming soon |
| HLE w/o tools | Coming soon | 30.8% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Grok 4.5 public-lane score: Coming soon
- Qwen3.8-27B public-lane score: 83.2 (#45/124)

| Benchmark | Grok 4.5 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

## FAQ

### Which is better overall, Grok 4.5 or Qwen3.8-27B?

Grok 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Grok 4.5 and Qwen3.8-27B?

The widest category gap is in reasoning, where the averages are 50.4 for Grok 4.5 and 78.7 for Qwen3.8-27B.

### How many benchmarks does Grok 4.5 cover on BenchLM?

Grok 4.5 currently has 15 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

- [Grok 4.5 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-5)
- [Qwen3.8-27B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-8-27b)
- [Grok 4.5 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-5)
- [Qwen3.8-27B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-8-27b)

## Explore More

- [Grok 4.5 profile](/models/grok-4-5)
- [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)