Claude Opus 4.5
VS
Qwen3.5 Plus 2026-02-15
Claude Opus 4.5 vs Qwen3.5 Plus 2026-02-15: which wins at real work?
22 task areas · same graded test runs · rank comparison only, so 0–100 and Elo collections never mix raw scores.
Claude Opus 4.5 wins 15 of 22 task areas we tested; Qwen3.5 Plus 2026-02-15 takes 7. Qwen3.5 Plus 2026-02-15 costs 16.5× less per token ($1.82 vs $30 per 1M).
Qwen3.5 Plus 2026-02-15 costs 16.5× less per token ($1.82 vs $30 per 1M).
Task by task
| Task area | Claude Opus 4.5 | Qwen3.5 Plus 2026-02-15 | Winner |
|---|---|---|---|
| Structured Output |
#82
/ 113
Strong
|
#18
/ 113
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Creative & Comedy | #8 / 110 | #71 / 110 | Claude Opus 4.5 |
| Executive Assistant |
#4
/ 112
Strong
|
#61
/ 112
Strong
|
Claude Opus 4.5 |
| Research & Competitive Analysis |
#17
/ 110
Excellent
|
#73
/ 110
Usable
|
Claude Opus 4.5 |
| RAG, Safety & Grounding |
#52
/ 113
Excellent
|
#7
/ 113
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Summarization & Meeting Notes |
#1
/ 110
Excellent
|
#46
/ 110
Excellent
|
Claude Opus 4.5 |
| Customer Support |
#56
/ 113
Strong
|
#18
/ 113
Strong
|
Qwen3.5 Plus 2026-02-15 |
| Coding |
#39
/ 115
Strong
|
#71
/ 115
Strong
|
Claude Opus 4.5 |
| Landing Pages |
#7
/ 72
Strong
|
#36
/ 72
Strong
|
Claude Opus 4.5 |
| Chef / Home Cooking |
#14
/ 126
Strong
|
#40
/ 126
Usable
|
Claude Opus 4.5 |
| Investor & Pitch |
#10
/ 66
Strong
|
#36
/ 66
Usable
|
Claude Opus 4.5 |
| Content & Brand |
#21
/ 124
Strong
|
#45
/ 124
Strong
|
Claude Opus 4.5 |
| Sales |
#3
/ 110
Strong
|
#27
/ 110
Strong
|
Claude Opus 4.5 |
| Product & Project Management |
#60
/ 110
Strong
|
#40
/ 110
Strong
|
Qwen3.5 Plus 2026-02-15 |
| Training & Education |
#24
/ 110
Excellent
|
#6
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Data & Analytics |
#9
/ 110
Excellent
|
#26
/ 110
Excellent
|
Claude Opus 4.5 |
| Legal & HR |
#30
/ 110
Excellent
|
#13
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| AI Strategy |
#16
/ 126
Strong
|
#32
/ 126
Strong
|
Claude Opus 4.5 |
| Presentations & Decks |
#45
/ 110
Excellent
|
#40
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Translation & Localization |
#5
/ 110
Excellent
|
#10
/ 110
Excellent
|
Claude Opus 4.5 |
| Knowledge & Docs |
#47
/ 110
Strong
|
#51
/ 110
Usable
|
Claude Opus 4.5 |
| Frontend & Landing Pages |
#2
/ 109
Usable
|
#3
/ 109
Usable
|
Claude Opus 4.5 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Claude Opus 4.5 better than Qwen3.5 Plus 2026-02-15?
Across 22 task areas we benchmarked, Claude Opus 4.5 ranks higher in 15 and Qwen3.5 Plus 2026-02-15 in 7.
Which is cheaper, Claude Opus 4.5 or Qwen3.5 Plus 2026-02-15?
Qwen3.5 Plus 2026-02-15 costs 16.5× less per token ($1.82 vs $30 per 1M).
What is Claude Opus 4.5 better at?
Claude Opus 4.5 out-ranks Qwen3.5 Plus 2026-02-15 at Creative & Comedy, Executive Assistant, Research & Competitive Analysis.
What is Qwen3.5 Plus 2026-02-15 better at?
Qwen3.5 Plus 2026-02-15 out-ranks Claude Opus 4.5 at Structured Output, RAG, Safety & Grounding, Customer Support.
More comparisons
This page is Spring Prompt, running in public
We just did this for every model. Do it for your prompt.
The rankings above come from running real tasks through real models and scoring every output. Spring Prompt is that same engine — pointed at your prompt, your test cases, and your definition of good.
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Prompt × model results
12 test cases · 3 evals