# Grok 4.3 vs Qwen3.8-27B

> Side-by-side benchmark comparison for Grok 4.3 and Qwen3.8-27B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-3-vs-qwen3-8-27b
- Last updated: September 28, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Qwen3.8-27B if you want the stronger benchmark profile. Grok 4.3 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Qwen3.8-27B leads overall 55.26 to 54.66.
- The clearest category separation is in agentic, where the averages are 25.8 for Grok 4.3 and 61.2 for Qwen3.8-27B.
- The biggest single benchmark swing is Terminal-Bench 2.1 (Vals) in Agentic, with scores of 41.9% and 58.4%.
- Qwen3.8-27B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.3 also has the larger context window at 1M.

## Model Snapshot

| Property | Grok 4.3 | Qwen3.8-27B |
|----------|----------|----------|
| Creator | xAI | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 54.66 | 55.26 |
| Benchmarks Covered | 7 | 33 |
| Pricing (input/output) | $1.25 / $2.50 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Qwen3.8-27B
- Grok 4.3 public-lane score: 25.8 (Supported · #89/117)
- Qwen3.8-27B public-lane score: 61.2 (Supported · #18/117)

| Benchmark | Grok 4.3 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 43.86% | Coming soon | Coming soon |
| ResearchClawBench | 12.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 41.9% | 58.4% | Qwen3.8-27B |
| Terminal-Bench 2.1 | Coming soon | 73.0% | Coming soon |
| 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: Qwen3.8-27B
- Grok 4.3 public-lane score: 29.4 (Supported · #94/142)
- Qwen3.8-27B public-lane score: 48.7 (Supported · #45/142)

| Benchmark | Grok 4.3 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench (Vals) | 84.5% | 84.0% | Grok 4.3 |
| SWE-bench (Vals) | 71.4% | 86.0% | Qwen3.8-27B |
| Terminal-Bench 2.1 | Coming soon | 73.0% | Coming soon |
| SWE-bench Pro | Coming soon | 61.7% | 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 |

### Reasoning

- Winner: Not comparable
- Grok 4.3 public-lane score: 66.5 (Unranked · 2 rankable rows)
- Qwen3.8-27B public-lane score: 78.7 (#8/27)

### Multimodal & Grounded

- Winner: Directional only
- Grok 4.3 public-lane score: 66.7 (#26/50)
- Qwen3.8-27B public-lane score: 80.9 (#11/50)

| Benchmark | Grok 4.3 | 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 4.3
- Grok 4.3 public-lane score: 53.5 (Supported · #51/168)
- Qwen3.8-27B public-lane score: 49.2 (Supported · #63/168)

| Benchmark | Grok 4.3 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 91.4% | 88.9% | Grok 4.3 |
| MMLU-Pro (Vals) | 85.8% | 84.3% | Grok 4.3 |
| 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: Directional only
- Grok 4.3 public-lane score: 93.2 (#2/124)
- Qwen3.8-27B public-lane score: 83.2 (#45/124)

| Benchmark | Grok 4.3 | Qwen3.8-27B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.5% | Coming soon |

## FAQ

### Which is better overall, Grok 4.3 or Qwen3.8-27B?

Qwen3.8-27B is ahead overall on BenchLM right now.

### Where is the biggest gap between Grok 4.3 and Qwen3.8-27B?

The widest category gap is in agentic, where the averages are 25.8 for Grok 4.3 and 61.2 for Qwen3.8-27B.

### How many benchmarks does Grok 4.3 cover on BenchLM?

Grok 4.3 currently has 7 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 4.3 vs GPT-6 Astra](/compare/gpt-6-astra-vs-grok-4-3)
- [Qwen3.8-27B vs GPT-6 Astra](/compare/gpt-6-astra-vs-qwen3-8-27b)
- [Grok 4.3 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-grok-4-3)
- [Qwen3.8-27B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-qwen3-8-27b)

## Explore More

- [Grok 4.3 profile](/models/grok-4-3)
- [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)