Claude Opus 4.5 vs Qwen3 8
Claude Opus 4.5 
Qwen3 8 Verdict
- Qwen3 8 (max) leads on quality: 63.6 vs 60.7.
- Claude Opus 4.5 (thinking) is stronger in agents & tools, instruction following, maths.
- Qwen3 8 (max) is stronger in coding, composite, knowledge, long context, multimodal, reasoning, human preference.
- Qwen3 8 (max) is 3.8× cheaper ($2.67 vs $10.00 per 1M blended).
| Metric | Claude Opus 4.5 (thinking) | Qwen3 8 (max) |
|---|---|---|
| BenchLeader Index | 60.7 | 63.6 |
| Agents & tools score | 74.6 | 56.0 |
| Coding score | 56.4 | 69.7 |
| Composite score | 65.8 | 70.9 |
| Instruction following score | 54.8 | – |
| Knowledge score | 61.0 | 62.3 |
| Long context score | 65.2 | 65.7 |
| Maths score | 64.0 | 62.4 |
| Multimodal score | 58.0 | 67.2 |
| Reasoning score | 58.6 | 68.1 |
| Human preference score | – | 68.3 |
| Blended price $/M | $10.00 | $2.67 |
| Output speed | 45 tok/s | 38 tok/s |
| Time to first answer | 17.3 s | 55.3 s |
| Context window | 200k | 1M |
| SciCode | – | 52.9% |
| ProofBench | – | 58.0% |
| Epoch Capabilities Index | – | 156.6 |
| LMArena Text | – | 1480 |
| LMArena Hard Prompts | – | 1502 |
| LMArena Coding | – | 1520 |
| LMArena WebDev | – | 1670 |
| LMArena Vision | – | 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 | 29.1 | 40.3 |
| IFBench | 58.0% | – |
| AA-LCR | 77.3% | 78.3% |
| MMMU-Pro | 74.0% | 82.3% |
| AA-Omniscience | 14 | 3.4 |
| Terminal-Bench Hard | 47.0% | – |
| GPQA Diamond (AA) | 86.6% | 92.7% |
| Humanity's Last Exam (AA) | 30.1% | 43.0% |
| SciCode (AA) | – | 53.2% |
| τ²-Bench Telecom (AA) | 89.5% | – |
| AIME (Vals) | 95.4% | – |
| LiveCodeBench | 83.7% | 87.8% |
| MMLU-Pro | 87.3% | 88.6% |
| IOI | 20.3% | 73.0% |
| LegalBench | 84.6% | 83.6% |
| CorpFin | 65.1% | 65.8% |
| TaxEval | 74.9% | 75.5% |
| MedQA | 95.9% | – |
| MGSM | 95.2% | – |
| Terminal-Bench 2.1 (Vals) | – | 67.4% |
| SWE-bench (Vals) | 76.4% | 85.6% |
| GPQA Diamond (Vals) | 85.9% | 93.7% |
| Vals Index | – | 51.8 |
| MultiChallenge | 59.0% | – |
| PRBench Finance | 46.2% | – |
| PRBench Legal | 44.2% | – |
| VISTA | 46.4% | – |
| MultiNRC | 48.6% | – |
| TutorBench | 51.2% | – |
| Kagi LLM Benchmark | 80.2% | – |
| ARC-AGI-1 | 80.0% | – |
| ARC-AGI-2 | 37.6% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Claude Opus 4.5 vs Qwen3 8: questions
- Is Claude Opus 4.5 better than Qwen3 8?
- Qwen3 8 (max) leads on quality: 63.6 vs 60.7. The BenchLeader Index combines every independent quality benchmark; Qwen3 8 (max) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Claude Opus 4.5 better than Qwen3 8 for coding?
- Qwen3 8 scores higher in coding (70 vs 56 on the category index, where 50 is average).
- Is Claude Opus 4.5 better than Qwen3 8 for agentic tasks?
- Claude Opus 4.5 scores higher in agentic tasks (75 vs 56 on the category index, where 50 is average).
- Which is cheaper, Claude Opus 4.5 or Qwen3 8?
- Qwen3 8 is cheaper: $2.67 against $10.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Opus 4.5 or Qwen3 8?
- Claude Opus 4.5 streams faster: 45 against 38 output tokens per second.
- Which has the larger context window?
- Qwen3 8 accepts more context: 1M against 200k tokens.