Gemini 3.1 Pro Preview
VS
Qwen3.5 Plus 2026-02-15
Gemini 3.1 Pro Preview 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.
Gemini 3.1 Pro Preview wins 15 of 22 task areas we tested; Qwen3.5 Plus 2026-02-15 takes 7. Qwen3.5 Plus 2026-02-15 costs 7.7× less per token ($1.82 vs $14 per 1M).
Qwen3.5 Plus 2026-02-15 costs 7.7× less per token ($1.82 vs $14 per 1M).
Task by task
| Task area | Gemini 3.1 Pro Preview | Qwen3.5 Plus 2026-02-15 | Winner |
|---|---|---|---|
| Creative & Comedy | #4 / 110 | #71 / 110 | Gemini 3.1 Pro Preview |
| Executive Assistant |
#14
/ 112
Strong
|
#61
/ 112
Strong
|
Gemini 3.1 Pro Preview |
| Summarization & Meeting Notes |
#4
/ 110
Excellent
|
#46
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Chef / Home Cooking |
#6
/ 126
Strong
|
#40
/ 126
Usable
|
Gemini 3.1 Pro Preview |
| Content & Brand |
#11
/ 124
Strong
|
#45
/ 124
Strong
|
Gemini 3.1 Pro Preview |
| Knowledge & Docs |
#19
/ 110
Strong
|
#51
/ 110
Usable
|
Gemini 3.1 Pro Preview |
| Frontend & Landing Pages |
#34
/ 109
Needs editing
|
#3
/ 109
Usable
|
Qwen3.5 Plus 2026-02-15 |
| Research & Competitive Analysis |
#42
/ 110
Strong
|
#73
/ 110
Usable
|
Gemini 3.1 Pro Preview |
| Investor & Pitch |
#13
/ 66
Strong
|
#36
/ 66
Usable
|
Gemini 3.1 Pro Preview |
| Landing Pages |
#14
/ 72
Strong
|
#36
/ 72
Strong
|
Gemini 3.1 Pro Preview |
| Customer Support |
#2
/ 113
Strong
|
#18
/ 113
Strong
|
Gemini 3.1 Pro Preview |
| Presentations & Decks |
#24
/ 110
Excellent
|
#40
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| Product & Project Management |
#25
/ 110
Excellent
|
#40
/ 110
Strong
|
Gemini 3.1 Pro Preview |
| Data & Analytics |
#39
/ 110
Excellent
|
#26
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Coding |
#64
/ 115
Strong
|
#71
/ 115
Strong
|
Gemini 3.1 Pro Preview |
| Sales |
#32
/ 110
Strong
|
#27
/ 110
Strong
|
Qwen3.5 Plus 2026-02-15 |
| Legal & HR |
#17
/ 110
Excellent
|
#13
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Translation & Localization |
#14
/ 110
Excellent
|
#10
/ 110
Excellent
|
Qwen3.5 Plus 2026-02-15 |
| Structured Output |
#15
/ 113
Excellent
|
#18
/ 113
Excellent
|
Gemini 3.1 Pro Preview |
| Training & Education |
#4
/ 110
Excellent
|
#6
/ 110
Excellent
|
Gemini 3.1 Pro Preview |
| AI Strategy |
#33
/ 126
Strong
|
#32
/ 126
Strong
|
Qwen3.5 Plus 2026-02-15 |
| RAG, Safety & Grounding |
#8
/ 113
Excellent
|
#7
/ 113
Excellent
|
Qwen3.5 Plus 2026-02-15 |
Rank = position among every model config we tested in that task area (lower is better). Sorted by biggest gap first.
Frequently asked
Is Gemini 3.1 Pro Preview better than Qwen3.5 Plus 2026-02-15?
Across 22 task areas we benchmarked, Gemini 3.1 Pro Preview ranks higher in 15 and Qwen3.5 Plus 2026-02-15 in 7.
Which is cheaper, Gemini 3.1 Pro Preview or Qwen3.5 Plus 2026-02-15?
Qwen3.5 Plus 2026-02-15 costs 7.7× less per token ($1.82 vs $14 per 1M).
What is Gemini 3.1 Pro Preview better at?
Gemini 3.1 Pro Preview out-ranks Qwen3.5 Plus 2026-02-15 at Creative & Comedy, Executive Assistant, Summarization & Meeting Notes.
What is Qwen3.5 Plus 2026-02-15 better at?
Qwen3.5 Plus 2026-02-15 out-ranks Gemini 3.1 Pro Preview at Frontend & Landing Pages, Data & Analytics, Sales.
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.
- Generate test cases from your prompt — no eval set required to start.
- Compare models side by side with quality, cost and latency in one matrix.
- Optimise the winner until the scores say it's ready to ship.
Prompt × model results
12 test cases · 3 evals