Claude Opus 4.8 vs Qwen3 8
Claude Opus 4.8 
Qwen3 8 Verdict
- Claude Opus 4.8 and Qwen3 8 (max) are level on quality (64.7 vs 63.9).
- Claude Opus 4.8 is stronger in agents & tools, composite, instruction following, knowledge.
- Qwen3 8 (max) is stronger in coding, human preference, long context, multimodal, reasoning.
- Qwen3 8 (max) is 3.8× cheaper ($2.67 vs $10.00 per 1M blended).
- Claude Opus 4.8 streams 1.5× faster (58 vs 39 tokens per second).
| Metric | Claude Opus 4.8 | Qwen3 8 (max) |
|---|---|---|
| BenchLeader Index | 64.7 | 63.9 |
| Agents & tools score | 65.0 | 56.1 |
| Coding score | 65.7 | 71.7 |
| Composite score | 81.9 | 70.8 |
| Human preference score | 65.6 | 67.9 |
| Instruction following score | 61.6 | – |
| Knowledge score | 66.3 | 62.3 |
| Long context score | 65.3 | 65.7 |
| Multimodal score | 64.4 | 67.2 |
| Reasoning score | 64.2 | 67.7 |
| Blended price $/M | $10.00 | $2.67 |
| Output speed | 58 tok/s | 39 tok/s |
| Time to first answer | 29.5 s | 53.2 s |
| Context window | 1M | 1M |
| SimpleBench | 64.8% | – |
| Remote Labor Index | 8.3% | – |
| FrontierCode | 46.5% | – |
| GSO-Bench | 47.1% | – |
| Epoch Capabilities Index | 158.3 | 156.6 |
| LMArena Text | 1473 | 1480 |
| LMArena Hard Prompts | 1503 | 1502 |
| LMArena Coding | 1527 | 1520 |
| LMArena WebDev | 1540 | 1685 |
| LMArena Vision | 1289 | 1313 |
| LMArena Agent | – | 3.9 |
| LiveBench | – | 78.5% |
| LiveBench Reasoning | – | 88.2% |
| LiveBench Coding | – | 72.9% |
| LiveBench Agentic Coding | – | 64.7% |
| LiveBench Mathematics | – | 91.3% |
| LiveBench Data Analysis | – | 78.4% |
| LiveBench Language | – | 79.7% |
| AA Intelligence Index | 42.0 | 40.3 |
| IFBench | 62.2% | – |
| AA-LCR | 77.7% | 78.3% |
| MMMU-Pro | – | 82.3% |
| AA-Omniscience | 28.8 | 3.4 |
| Terminal-Bench Hard | 58.3% | – |
| GPQA Diamond (AA) | 92.0% | 92.7% |
| Humanity's Last Exam (AA) | 48.7% | 43.0% |
| SciCode (AA) | 54.4% | 53.2% |
| τ²-Bench Telecom (AA) | 94.4% | – |
| LiveCodeBench | 87.8% | 87.8% |
| MMLU-Pro | 89.6% | 88.6% |
| IOI | – | 73.0% |
| LegalBench | 83.6% | 83.6% |
| CorpFin | 66.7% | 65.8% |
| TaxEval | 75.6% | 75.5% |
| Terminal-Bench 2.1 (Vals) | 71.9% | 67.4% |
| SWE-bench (Vals) | 88.6% | 85.6% |
| GPQA Diamond (Vals) | 92.4% | 93.7% |
| Vals Index | 60.9 | 51.8 |
| HiL-Bench | 35.3% | – |
| EQ-Bench 4 | 1281 | – |
Data as of 2026-09-09. Best configuration of each model; every score links to its source on the model pages.