Hardest reasoning tasks
Choose Claude Opus 5.5
Claude Opus 5.5 scores 57.6 on the Artificial Analysis Intelligence Index, against 45.4 for Qwen3.8-Max.
Claude Opus 5.5 vs Qwen3.8-Max: price, context and capabilities
Choose Claude Opus 5.5 for the hardest reasoning tasks and reasoning over long documents; on the other points the two are level or the data is missing.
In short
- A price comparison is not possible: one of them has no comparable published price.
- Only Claude Opus 5.5 offers structured output, prompt caching, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Reasoning over long documents
Choose Claude Opus 5.5
Claude Opus 5.5 scores 84.7% on Long-context reasoning (AA-LCR), against 80.3% for Qwen3.8-Max.
Specifications side by side
| Claude Opus 5.5 | Qwen3.8-Max | |
|---|---|---|
| Provider | Anthropic | Alibaba Cloud (Qwen) |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | $8.00 / 1M tokens | No data |
| Input | $4.00 / 1M tokens | No data |
| Output | $20.00 / 1M tokens | No data |
| Cached input | $0.20 / 1M tokens | No data |
| Context window | 1M | No data |
| Max output | 128k | No data |
| Released | September 2026 | Sep 2, 2026 |
| Knowledge cutoff | June 2026 | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Vision, Reasoning, Tool calling |
| API model id | claude-opus-5-5 | qwen3.8-max |
Benchmarks side by side
Leader in bold.
| Benchmark | Claude Opus 5.5 | Qwen3.8-Max |
|---|---|---|
| Intelligence Index | 57.6 | 45.4 |
| SciCode | 66.9% | 52.1% |
| Humanity's Last Exam | 61.4% | 43.1% |
| MMMU-Pro (visual reasoning) | 87.7% | 82.8% |
| Long-context reasoning (AA-LCR) | 84.7% | 80.3% |
| GPQA Diamond | No data | 92.8% |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Claude Opus 5.5 or Qwen3.8-Max?
Choose Claude Opus 5.5 for the hardest reasoning tasks and reasoning over long documents; on the other points the two are level or the data is missing.
Which is cheaper, Claude Opus 5.5 or Qwen3.8-Max?
A price comparison is not possible: one of them has no comparable published price.
What is the difference between Claude Opus 5.5 and Qwen3.8-Max?
Claude Opus 5.5 is made by Anthropic and Qwen3.8-Max by Alibaba Cloud (Qwen). A price comparison is not possible: one of them has no comparable published price. Only Claude Opus 5.5 offers structured output, prompt caching, batch api.