# Claude Opus 4.5 Thinking vs Qwen3.5 397B

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

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

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Claude Opus 4.5 Thinking and Qwen3.5 397B.

## Summary

- Claude Opus 4.5 Thinking and Qwen3.5 397B do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Claude Opus 4.5 Thinking | Qwen3.5 397B |
|----------|----------|----------|
| Creator | Anthropic | Alibaba |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 200K | 128K |
| Independent public score (not head-to-head) | 56.09 | 56.44 |
| Benchmarks Covered | 1 | 38 |
| Pricing (input/output) | N/A | $0.60 / $3.60 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 48.2 (Estimated · #77/151)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 52.5% | Coming soon |
| BrowseComp | Coming soon | 62% | Coming soon |
| Claw-Eval | Coming soon | 56.8% | Coming soon |
| QwenClawBench | Coming soon | 51.8% | Coming soon |
| τ³-bench results | Coming soon | 68.4% | Coming soon |
| VITA-Bench | Coming soon | 43.7% | Coming soon |
| DeepPlanning | Coming soon | 37.6% | Coming soon |
| Toolathlon | Coming soon | 36.3% | Coming soon |
| MCP Atlas | Coming soon | 46.1% | Coming soon |
| MCP-Tasks | Coming soon | 74.2% | Coming soon |
| WideResearch | Coming soon | 74.0% | Coming soon |
| Gert Labs | Coming soon | 46.76% | Coming soon |
| ResearchClawBench | Coming soon | 14.2% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 55.2 (Estimated · #41/183)
- Qwen3.5 397B public-lane score: 52.4 (Estimated · #56/183)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 20.63% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 76.2% | Coming soon |
| LiveCodeBench v6 | Coming soon | 83.6% | Coming soon |
| SWE-bench Pro | Coming soon | 50.9% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 69 (Unranked · 1 rankable row)
- Qwen3.5 397B public-lane score: 63 (#27/48)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 79% | Coming soon |
| MathVision | Coming soon | 88.6% | Coming soon |
| CharXiv | Coming soon | 80.8% | Coming soon |
| VideoMMMU | Coming soon | 84.7% | Coming soon |
| ScreenSpot Pro | Coming soon | 65.6% | Coming soon |
| V* | Coming soon | 95.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 75.7 (Unranked · 2 rankable rows)
- Qwen3.5 397B public-lane score: 59.8 (Unranked · 2 rankable rows)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 63.2% | Coming soon |
| AI-Needle | Coming soon | 68.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 56.1 (Estimated · #54/181)
- Qwen3.5 397B public-lane score: 51.6 (Estimated · #80/181)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 88.4% | Coming soon |
| SuperGPQA | Coming soon | 70.4% | Coming soon |
| MMLU-Pro | Coming soon | 87.8% | Coming soon |
| MMLU-Redux | Coming soon | 94.9% | Coming soon |
| C-Eval | Coming soon | 93% | Coming soon |
| HLE | Coming soon | 28.7% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: 69.7 (#63/120)
- Qwen3.5 397B public-lane score: 0 (#120/120)

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

### Multilingual

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 69.7 (#5/12)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| MMLU-ProX | Coming soon | 84.7% | Coming soon |
| NOVA-63 | Coming soon | 59.1% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Opus 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 397B public-lane score: 74.2 (Unranked · 5 rankable rows)

| Benchmark | Claude Opus 4.5 Thinking | Qwen3.5 397B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 93.3% | Coming soon |
| HMMT Feb 2025 | Coming soon | 94.8% | Coming soon |
| HMMT Nov 2025 | Coming soon | 92.7% | Coming soon |
| HMMT Feb 2026 | Coming soon | 87.9% | Coming soon |
| MMAnswerBench | Coming soon | 80.9% | Coming soon |

## FAQ

### Can I compare Claude Opus 4.5 Thinking and Qwen3.5 397B on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

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