Compare / Qwen3.5-27B vs Claude Opus 4
Qwen3.5-27B vs Claude Opus 4
Which is cheaper, which is more capable, and which does better at each kind of work, from 11 results on 3 sources that measured both models.
Of the 11 results both models have, the better value on each. Results whose reported ranges overlap are too close to call.
Results as of 9 October 2026 (catalogue release 2026-10-09-dd620e778ac5). See also Alibaba vs Anthropic, every model from both labs.
Qwen3.5-27B or Claude Opus 4? The short answer
They score and cost about the same: pick on the results below that match your work.
- Qwen3.5-27B is newer: released 24 Feb 2026, against 22 May 2025 for Claude Opus 4.
- On third-party benchmarks, on the results both models have: Claude Opus 4 does better for writing and sticking to the facts.
Head to head
Every fact side by side
| Qwen3.5-27B | Claude Opus 4 | |
|---|---|---|
| Price per million tokens | $0.27 in · $2.16 out | Not on sale |
| Blended (3 in : 1 out) | $0.74 | – |
| Cheapest host, blended | $0.54 (Alibaba) | – |
| Intelligence Index | 22.9 | – |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | – | – |
| Context window | 262,144 tokens | – |
| Released | 24 Feb 2026 (newer) | 22 May 2025 |
| Weights | Open | Closed |
| Developer based in | China | the US |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among the models on sale today, for each kind of work, from our own benchmarks and licensed sources. Further right is better; the better rank is in green.
Every shared result
Each model's best result on every measure both have, grouped by benchmark, with the setting that produced it. Under each measure, every model that benchmark has measured is a grey tick, best to the right, so you can see where the two sit in the field. The headline measures of each benchmark come first; the rest are under "Show all". Green marks the better value; where a source reports ranges that overlap, neither is marked.
| Measure | Qwen3.5-27B | Claude Opus 4 |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 3 results | ||
| Overall · TextArena rating, higher is better 129 · 103 of 387 measured | 1,409 | 1,426thinking-16k reasoning |
| Business, management and finance · TextArena rating, higher is better 128 · 126 of 380 measured | 1,408 | 1,409thinking-16k reasoning |
| Creative writing · TextArena rating, higher is better 145 · 59 of 385 measured | 1,358 | 1,432thinking-16k reasoning |
| UGI Leaderboard reported by UGI Leaderboard · 3 results | ||
| Writing score · UGIscore out of 100, higher is better 99 · 16 of 230 measured | 42.4think-prefill reasoning | 68.2no reasoning |
| Requested-length error · UGI% off the requested word count, lower is better 49 · 17 of 230 measured | 11.0%think-prefill reasoning | 6.0%no reasoning |
| Style adherence · UGIscore from 0 to 1, higher is better 147 · 60 of 230 measured | 0.33no reasoning | 0.36thinking reasoning |
| Vectara Hallucination Leaderboard reported by Vectara Hallucination Leaderboard · 2 results | ||
| Hallucination rate · Vectara% of summaries, lower is better 80 · 77 of 104 measured | 12.1% | 12.0% |
| Answer rate · Vectara% of documents, higher is better 31 · 99 of 104 measured | 99.8% | 91.0% |
Show all 11 results (3 more)
| Measure | Qwen3.5-27B | Claude Opus 4 |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 3 results | ||
| Expert prompts · TextArena rating, higher is better 112 · 102 of 338 measured | 1,441 | 1,448thinking-16k reasoning |
| Instruction following · TextArena rating, higher is better 122 · 65 of 387 measured | 1,401 | 1,444thinking-16k reasoning |
| Writing, literature and language · TextArena rating, higher is better 135 · 66 of 386 measured | 1,380 | 1,431thinking-16k reasoning |
Compare them with other models
Quick answers
Is Qwen3.5-27B better than Claude Opus 4?
They score and cost about the same: pick on the results below that match your work.
Which is better for writing, Qwen3.5-27B or Claude Opus 4?
Claude Opus 4 ranks 49 of 188 models on sale for what people prefer in blind comparisons, and judged writing quality, against 98 for Qwen3.5-27B.
Which is better for sticking to the facts, Qwen3.5-27B or Claude Opus 4?
Qwen3.5-27B ranks 121 of 152 models on sale for summarising without inventing things, and factual answers, against 122 for Claude Opus 4.
Run Qwen3.5-27B and Claude Opus 4 on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.