Qwen 3.5 Plus (2026-02-15)

qwen/qwen3.5-plus-02-15

Qwen 3.5 Plus (2026-02-15)

via OpenRouter

Release Date

Feb 15th, 2026

Parameters

–

Context Size

Benchmark Cost

$1.11

Speed

21.4 tok/s

Creative writing

30.51%

Rule following

70.52%

Utility

88.71%

Mathematics

100.00%

Tooling

87.92%

Language

92.55%

Logic

89.30%

Codex Violation Detection

Detects factual inconsistencies between a story bible and prose passages. The model must output structured XML identifying each violation with paragraph number and substring.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
matrix
Large codex (40 entries), long passage (1,019 words) 0-shot ToolingUtilityLogicRule following	97%	93%	92%	91%	89%	89%	87%	77%	61%	3%	78%
Large codex (40 entries), short passage (165 words) 0-shot ToolingUtilityLogicRule following	96%	96%	91%	91%	91%	91%	89%	89%	82%	80%	90%
Small codex (7 entries), long passage (734 words) 0-shot ToolingUtilityLogicRule following	95%	95%	95%	95%	95%	95%	95%	95%	95%	95%	95%
Small codex (7 entries), short passage (165 words) 0-shot ToolingUtilityLogicRule following	100%	100%	100%	95%	95%	95%	95%	95%	95%	95%	97%
tiers
5 codex entries 0-shot ToolingUtilityLogicRule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	66%	97%
10 codex entries 0-shot ToolingUtilityLogicRule following	100%	100%	100%	100%	100%	100%	86%	86%	86%	86%	94%
20 codex entries 0-shot ToolingUtilityLogicRule following	92%	92%	92%	89%	88%	88%	85%	85%	85%	79%	87%
40 codex entries 0-shot ToolingUtilityLogicRule following	100%	100%	92%	92%	92%	92%	92%	87%	83%	83%	91%
91.10%

Data extraction

Extract key details from a given block of text.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
All valid emails 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Contextual pronoun 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Fruits excluding citrus 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Future event time 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Guess the pet 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Highest-rated movie 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Indirect birth year 0-shot UtilityMathematicsLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What instrument does Lucy play? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What's the color of the car? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
What's the correct time? 0-shot UtilityLogic	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Who's the sister? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Who's the tallest? 0-shot UtilityLogic	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
90.83%

Dialogue tags

Various tasks related to dialogue tags in text.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
dialogue-200
Write 200 words with 10% dialogue 0-shot Creative writingRule following	72%	70%	68%	63%	62%	52%	44%	36%	19%	18%	50%
Write 200 words with 50% dialogue 0-shot Creative writingRule following	100%	52%	50%	39%	22%	14%	10%	2%	0%	0%	29%
Write 200 words with 90% dialogue 0-shot Creative writingRule following	82%	80%	76%	56%	49%	48%	32%	19%	18%	18%	48%
dialogue-500
Write 500 words with 30% dialogue 0-shot Creative writingRule following	26%	17%	0%	0%	0%	0%	0%	0%	0%	0%	4%
Write 500 words with 50% dialogue 0-shot Creative writingRule following	4%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Write 500 words with 70% dialogue 0-shot Creative writingRule following	3%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
Ungrouped
Write unattributed dialogue 0-shot Creative writingRule following	100%	100%	100%	100%	100%	100%	100%	100%	14%	1%	81%
30.51%

Language Comprehension

Does the model understand more than just English?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Asking for directions (Dutch) 0-shot Language	100%	100%	100%	100%	100%	100%
Asking for directions (German) 0-shot Language	100%	100%	100%	100%	100%	100%
Friend got new kittens (German) 0-shot Language	100%	100%	100%	100%	100%	100%
Friend got new kittens (Tagalog) 0-shot Language	100%	100%	100%	100%	100%	100%
100.00%

Language Writing

Can the model generate text in different languages?

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Total
Character dialogue (French) in a story 0-shot Language	100%	93%	86%	81%	72%	86%
Character dialogue (German) in a story 0-shot Language	100%	100%	100%	92%	92%	97%
Character dialogue (Hindi) in a story 0-shot Language	100%	100%	54%	50%	46%	70%
Character dialogue (Italian) in a story 0-shot Language	100%	100%	100%	100%	100%	100%
Character dialogue (Spanish) in a story 0-shot Language	93%	92%	82%	75%	56%	80%
86.59%

N-Length Sentences

Write sentences with exactly N words

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Write sentences with 5 words each 0-shot Rule following	100%	91%	82%	78%	78%	78%	78%	78%	78%	78%	82%
Write sentences with 10 words each 0-shot Rule following	100%	84%	84%	74%	72%	72%	70%	65%	52%	35%	71%
Write sentences with 20 words each 0-shot Rule following	23%	12%	3%	3%	2%	0%	0%	0%	0%	0%	4%
52.40%

Novel outline

Handle questions about the outline of a novel in various formats

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
outline-count
Count acts 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count chapters 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count scenes 0-shot ToolingUtility	100%	0%	0%	0%	0%	0%	0%	0%	0%	0%	10%
pov-count
Count point of views for Jack and Olivia 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Count point of views for Jack Harper 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	0%	0%	80%
Count point of views for Olivia 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
81.67%

Tool usage within Novelcrafter

Output messages that are related to tool usage within Novelcrafter

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Create alternate prose sections 0-shot ToolingUtility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
100.00%

Voice/dialogue sheets

Extract dialogue from given text as voice sheets.

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
Multiple speakers 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Simple 0-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
Simple (1-shot) 1-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	100%	0%	90%
Simple (5-shot) Few-shot Utility	100%	100%	100%	100%	100%	100%	100%	100%	0%	0%	80%
Unattributed dialogue 0-shot Utility	100%	100%	100%	100%	100%	100%	0%	0%	0%	0%	60%
86.00%

Write N of X

Write exactly N words/sentences/paragraphs...

Scenario	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6	Run 7	Run 8	Run 9	Run 10	Total
paragraphs
1 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
3 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
5 paragraph summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
sentences
1 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
3 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
10 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
20 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
50 sentence summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%	100%
words
10 word summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	100%	100%	100%	98%	100%
20 word summary 0-shot Rule following	100%	100%	100%	100%	100%	100%	98%	98%	98%	98%	99%
50 word summary 0-shot Rule following	100%	100%	100%	100%	98%	98%	92%	92%	27%	9%	82%
100 word summary 0-shot Rule following	54%	2%	0%	0%	0%	0%	0%	0%	0%	0%	6%
200 word summary 0-shot Rule following	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%	0%
83.57%