# Grok 4.20 vs Qwen3.8 Max

> Side-by-side benchmark comparison for Grok 4.20 and Qwen3.8 Max across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/grok-4-20-beta-vs-qwen3-8-max
- Last updated: September 17, 2026

- Shared sourced benchmarks: 13
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Qwen3.8 Max if you want the stronger benchmark profile. Grok 4.20 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Qwen3.8 Max leads overall 71.76 to 67.27.
- The clearest category separation is in multimodal & grounded, where the averages are 34.6 for Grok 4.20 and 87.4 for Qwen3.8 Max.
- The biggest single benchmark swing is CharXiv in Multimodal & Grounded, with scores of 60.9% and 93.5%.
- Qwen3.8 Max is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Grok 4.20 also has the larger context window at 2M.

## Model Snapshot

| Property | Grok 4.20 | Qwen3.8 Max |
|----------|----------|----------|
| Creator | xAI | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 2M | 1M |
| Overall Score | 67.27 | 71.76 |
| Benchmarks Covered | 23 | 60 |
| Pricing (input/output) | $2.00 / $6.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Qwen3.8 Max
- Grok 4.20 public-lane score: 26.6 (Supported · #146/153)
- Qwen3.8 Max public-lane score: 67.3 (Supported · #9/153)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 47.1% | Coming soon | Coming soon |
| DeepSearchQA | 62.8% | Coming soon | Coming soon |
| Gert Labs | 38.36% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 44.2% | 67.4% | Qwen3.8 Max |
| Terminal-Bench 2.1 | Coming soon | 86.6% | Coming soon |
| CoWorkBench | Coming soon | 74.8% | Coming soon |
| JobBench | Coming soon | 53.4% | Coming soon |
| skillsBench | Coming soon | 70.2% | Coming soon |
| Agents' Last Exam | Coming soon | 52.4% | Coming soon |
| AutomationBench | Coming soon | 27.3% | Coming soon |
| Toolathlon-Verified | Coming soon | 72.5% | Coming soon |
| WideResearch | Coming soon | 81.9% | Coming soon |
| HLE w/ tools | Coming soon | 56.2% | Coming soon |
| OSWorld-Verified | Coming soon | 86.1% | Coming soon |
| OSWorld 2.0 | Coming soon | 19.4% | Coming soon |
| WebArena-Verified | Coming soon | 66.8% | Coming soon |
| AndroidWorld | Coming soon | 85.3% | Coming soon |
| MobileWorld | Coming soon | 77.8% | Coming soon |

### Coding

- Winner: Qwen3.8 Max
- Grok 4.20 public-lane score: 28.4 (Supported · #142/152)
- Qwen3.8 Max public-lane score: 60.8 (Supported · #20/152)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench Pro | 74.2% | Coming soon | Coming soon |
| SWE-bench Verified | 76.7% | Coming soon | Coming soon |
| SWE-bench Pro | 51.8% | 67.7% | Qwen3.8 Max |
| Vibe Code Bench | 4.06% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 84.3% | 87.9% | Qwen3.8 Max |
| SWE-bench (Vals) | 72.2% | 85.6% | Qwen3.8 Max |
| Terminal-Bench 2.1 | Coming soon | 86.6% | Coming soon |
| DeepSWE | Coming soon | 56.6% | Coming soon |
| NL2Repo | Coming soon | 55.9% | Coming soon |
| FrontierSWE | Coming soon | 73.5% | Coming soon |
| MLS-Bench Lite | Coming soon | 41.0% | Coming soon |
| PaperBench | Coming soon | 93.0% | Coming soon |
| VulcanBench v3 | Coming soon | 81.2% | Coming soon |
| OpenHarmony Bench | Coming soon | 60.8% | Coming soon |
| FrontierSWE v2 | Coming soon | 15.8% | Coming soon |

### Multimodal & Grounded

- Winner: Qwen3.8 Max
- Grok 4.20 public-lane score: 34.6 (#43/48)
- Qwen3.8 Max public-lane score: 87.4 (#5/48)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 75.2% | 82.3% | Qwen3.8 Max |
| CharXiv | 60.9% | 93.5% | Qwen3.8 Max |
| ERQA | 54.1% | 77.8% | Qwen3.8 Max |
| SimpleVQA | 57.4% | 75.0% | Qwen3.8 Max |
| MedXpertQA (MM) | 65.8% | 80.4% | Qwen3.8 Max |
| MathVision | Coming soon | 95.2% | Coming soon |
| MathVision w/ Python | Coming soon | 97.7% | Coming soon |
| BabyVision | Coming soon | 82.0% | Coming soon |
| BabyVision w/ Python | Coming soon | 91.3% | Coming soon |
| ZeroBench | Coming soon | 24.0% | Coming soon |
| ZeroBench w/ Python | Coming soon | 49.0% | Coming soon |
| ScreenSpot Pro | Coming soon | 84.5% | Coming soon |
| Vision2Web | Coming soon | 69.0% | Coming soon |
| CharXiv w/o tools | Coming soon | 88.4% | Coming soon |
| OmniDocBench 1.5 | Coming soon | 92.1% | Coming soon |
| OCRBench V2 | Coming soon | 74.2% | Coming soon |
| CC-OCR | Coming soon | 79.6% | Coming soon |
| RealWorldQA | Coming soon | 88.0% | Coming soon |
| PerceptionBench | Coming soon | 63.5% | Coming soon |
| Video-MME (with subtitle) | Coming soon | 90.4% | Coming soon |
| VideoMMMU | Coming soon | 88.7% | Coming soon |
| MMVU | Coming soon | 82.4% | Coming soon |
| MLVU (M-Avg) | Coming soon | 90.8% | Coming soon |
| LVBench | Coming soon | 81.8% | Coming soon |

### Reasoning

- Winner: Coming soon
- Grok 4.20 public-lane score: 34.2 (Unranked · 2 rankable rows)
- Qwen3.8 Max public-lane score: 86.5 (Unranked · 2 rankable rows)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 53.3% | Coming soon | Coming soon |
| ARC-AGI-3 | 0.1% | Coming soon | Coming soon |
| MRCRv2 | Coming soon | 92.9% | Coming soon |
| LongBench v2 | Coming soon | 66.3% | Coming soon |

### Knowledge

- Winner: Qwen3.8 Max
- Grok 4.20 public-lane score: 49.4 (Supported · #85/183)
- Qwen3.8 Max public-lane score: 68.8 (Supported · #17/183)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 88.5% | 92.6% | Qwen3.8 Max |
| HLE w/o tools | 31.6% | 43.6% | Qwen3.8 Max |
| HealthBench Hard | 20.3% | Coming soon | Coming soon |
| MedXpertQA (Text) | 50.2% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 88.6% | 93.7% | Qwen3.8 Max |
| MMLU-Pro (Vals) | 86.3% | 88.6% | Qwen3.8 Max |
| GPQA | Coming soon | 92.6% | Coming soon |
| HLE | Coming soon | 43.6% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Grok 4.20 public-lane score: Coming soon
- Qwen3.8 Max public-lane score: 90.7 (#18/123)

| Benchmark | Grok 4.20 | Qwen3.8 Max | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 82.8% | Coming soon |

## FAQ

### Which is better overall, Grok 4.20 or Qwen3.8 Max?

Qwen3.8 Max is ahead overall on BenchLM right now.

### Where is the biggest gap between Grok 4.20 and Qwen3.8 Max?

The widest category gap is in multimodal & grounded, where the averages are 34.6 for Grok 4.20 and 87.4 for Qwen3.8 Max.

### How many benchmarks does Grok 4.20 cover on BenchLM?

Grok 4.20 currently has 23 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.8 Max cover on BenchLM?

Qwen3.8 Max currently has 60 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Grok 4.20 vs Grok 4.20 Multi-agent](/compare/grok-4-20-beta-vs-grok-4-20-multi-agent-beta)
- [Qwen3.8 Max vs Grok 4.20 Multi-agent](/compare/grok-4-20-multi-agent-beta-vs-qwen3-8-max)
- [Grok 4.20 vs Qwen3.8 Max Preview](/compare/grok-4-20-beta-vs-qwen3-8-max-preview)
- [Qwen3.8 Max vs Qwen3.8 Max Preview](/compare/qwen3-8-max-vs-qwen3-8-max-preview)

## Explore More

- [Grok 4.20 profile](/models/grok-4-20-beta)
- [Qwen3.8 Max profile](/models/qwen3-8-max)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)