# Claude Opus 4.5 vs Qwen3.5 397B

> Side-by-side benchmark comparison for Claude Opus 4.5 and Qwen3.5 397B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-5-vs-qwen3-5-397b
- Last updated: September 10, 2026

- Shared sourced benchmarks: 36
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Claude Opus 4.5 if you want the stronger benchmark profile. Qwen3.5 397B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.5 leads overall 58.41 to 54.7.
- The clearest category separation is in multimodal & grounded, where the averages are 23.5 for Claude Opus 4.5 and 63 for Qwen3.5 397B.
- The biggest single benchmark swing is V* in Multimodal & Grounded, with scores of 67.0% and 95.8%.
- Qwen3.5 397B is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Claude Opus 4.5 also has the larger context window at 200K.

## Model Snapshot

| Property | Claude Opus 4.5 | Qwen3.5 397B |
|----------|----------|----------|
| Creator | Anthropic | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 128K |
| Overall Score | 58.41 | 54.7 |
| Benchmarks Covered | 45 | 38 |
| Pricing (input/output) | $5.00 / $25.00 | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 43.2 (Estimated · #97/152)
- Qwen3.5 397B public-lane score: 46.8 (Estimated · #71/152)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.3% | 52.5% | Claude Opus 4.5 |
| OSWorld-Verified | 66.3% | Coming soon | Coming soon |
| OSWorld | 66.3% | Coming soon | Coming soon |
| Claw-Eval | 59.6% | 56.8% | Claude Opus 4.5 |
| QwenClawBench | 52.3% | 51.8% | Claude Opus 4.5 |
| τ³-bench results | 70.2% | 68.4% | Claude Opus 4.5 |
| VITA-Bench | 23.3% | 43.7% | Qwen3.5 397B |
| DeepPlanning | 26.4% | 37.6% | Qwen3.5 397B |
| Toolathlon | 43.5% | 36.3% | Claude Opus 4.5 |
| MCP Atlas | 42.3% | 46.1% | Qwen3.5 397B |
| MCP-Tasks | 71.8% | 74.2% | Qwen3.5 397B |
| WideResearch | 76.4% | 74.0% | Claude Opus 4.5 |
| CyberGym | 50.6% | Coming soon | Coming soon |
| Gert Labs | 64.23% | 46.76% | Claude Opus 4.5 |
| JobBench | 32.3% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 62% | Coming soon |
| ResearchClawBench | Coming soon | 14.2% | Coming soon |

### Coding

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 56.6 (Estimated · #36/151)
- Qwen3.5 397B public-lane score: 50.2 (Estimated · #59/151)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.9% | 76.2% | Claude Opus 4.5 |
| LiveCodeBench v6 | 84.8% | 83.6% | Claude Opus 4.5 |
| SWE-bench Pro | 57.1% | 50.9% | Claude Opus 4.5 |
| SWE Multilingual | 77.5% | Coming soon | Coming soon |
| NL2Repo | 43.2% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Qwen3.5 397B
- Claude Opus 4.5 public-lane score: 23.5 (#46/48)
- Qwen3.5 397B public-lane score: 63 (#27/48)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 70.6% | 79% | Qwen3.5 397B |
| MathVision | 74.3% | 88.6% | Qwen3.5 397B |
| CharXiv | 68.5% | 80.8% | Qwen3.5 397B |
| VideoMMMU | 84.4% | 84.7% | Qwen3.5 397B |
| ScreenSpot Pro | 45.7% | 65.6% | Qwen3.5 397B |
| V* | 67.0% | 95.8% | Qwen3.5 397B |

### Reasoning

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 72.1 (Unranked · 4 rankable rows)
- Qwen3.5 397B public-lane score: 59.8 (Unranked · 2 rankable rows)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | 64.4% | 63.2% | Claude Opus 4.5 |
| AI-Needle | 74% | 68.7% | Claude Opus 4.5 |

### Knowledge

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 53.9 (Estimated · #61/183)
- Qwen3.5 397B public-lane score: 50.2 (Estimated · #77/183)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87% | 88.4% | Qwen3.5 397B |
| SuperGPQA | 70.6% | 70.4% | Claude Opus 4.5 |
| MMLU-Pro | 89.5% | 87.8% | Claude Opus 4.5 |
| MMLU-Redux | 96.6% | 94.9% | Claude Opus 4.5 |
| C-Eval | 92.2% | 93% | Qwen3.5 397B |
| HLE | 30.8% | 28.7% | Claude Opus 4.5 |

### Instruction Following

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 39.5 (#105/123)
- Qwen3.5 397B public-lane score: 0 (#123/123)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 90.9% | 92.6% | Qwen3.5 397B |
| IFBench | 58% | Coming soon | Coming soon |

### Multilingual

- Winner: Claude Opus 4.5
- Claude Opus 4.5 public-lane score: 82.9 (#2/12)
- Qwen3.5 397B public-lane score: 69.7 (#5/12)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | 85.7% | 84.7% | Claude Opus 4.5 |
| NOVA-63 | 56.7% | 59.1% | Qwen3.5 397B |

### Mathematics

- Winner: Coming soon
- Claude Opus 4.5 public-lane score: 58.3 (#6/7)
- Qwen3.5 397B public-lane score: 74.2 (Unranked · 5 rankable rows)

| Benchmark | Claude Opus 4.5 | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.1% | 93.3% | Claude Opus 4.5 |
| HMMT Feb 2025 | 92.9% | 94.8% | Qwen3.5 397B |
| HMMT Nov 2025 | 93.3% | 92.7% | Claude Opus 4.5 |
| HMMT Feb 2026 | 85.3% | 87.9% | Qwen3.5 397B |
| MMAnswerBench | 84.0% | 80.9% | Claude Opus 4.5 |
| FrontierMath v2 (Tiers 1-3) | 20.690% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 4.167% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Claude Opus 4.5 or Qwen3.5 397B?

Claude Opus 4.5 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.5 and Qwen3.5 397B?

The widest category gap is in multimodal & grounded, where the averages are 23.5 for Claude Opus 4.5 and 63 for Qwen3.5 397B.

### How many benchmarks does Claude Opus 4.5 cover on BenchLM?

Claude Opus 4.5 currently has 45 sourced benchmark scores on BenchLM.

### How many benchmarks does Qwen3.5 397B cover on BenchLM?

Qwen3.5 397B currently has 38 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.5 vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-vs-claude-opus-4-5-thinking)
- [Qwen3.5 397B vs Claude Opus 4.5 Thinking](/compare/claude-opus-4-5-thinking-vs-qwen3-5-397b)
- [Claude Opus 4.5 vs Qwen3.5 397B (Reasoning)](/compare/claude-opus-4-5-vs-qwen3-5-397b-reasoning)
- [Qwen3.5 397B vs Qwen3.5 397B (Reasoning)](/compare/qwen3-5-397b-vs-qwen3-5-397b-reasoning)

## Explore More

- [Claude Opus 4.5 profile](/models/claude-opus-4-5)
- [Qwen3.5 397B profile](/models/qwen3-5-397b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)