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

Context Size

Reasoning

Benchmark Cost

$3.55

Speed

36.7 tok/s

Subcategories

Bad Writing Habits

Detects common prose quality anti-patterns in AI-generated creative writing, including passive voice, past progressive overuse, weak dialogue tags, filter words, purple prose, cliches, AI-ism words/adverbs/names, and more.

Scenario	#1	#2	#3	#4	#5	Total
Detailed Writing Rules
Fantasy: entering an ancient ruin Creative Writing Hallucination	79	78	75	75	70	75%
Horror: alone in an eerie place at night Creative Writing Hallucination	83	83	81	80	76	80%
Literary fiction: old friends reunite Creative Writing Hallucination	83	83	79	79	76	80%
Mystery: examining a crime scene Creative Writing Hallucination	82	82	81	80	75	80%
Romance: separated couple reunites Creative Writing Hallucination	91	86	83	77	76	83%
Thriller: chase through city streets Creative Writing Hallucination	84	79	78	77	76	79%
Detailed Writing Rules						79.46%
genre
Fantasy: entering an ancient ruin Creative Writing Hallucination	77	75	71	70	70	72%
Horror: alone in an eerie place at night Creative Writing Hallucination	78	74	73	73	73	74%
Literary fiction: old friends reunite Creative Writing Hallucination	79	76	75	72	67	74%
Mystery: examining a crime scene Creative Writing Hallucination	79	74	72	71	70	73%
Romance: separated couple reunites Creative Writing Hallucination	78	74	72	70	66	72%
Thriller: chase through city streets Creative Writing Hallucination	78	77	75	74	74	75%
genre						73.46%
Novelcrafter Default Prompt
Fantasy: entering an ancient ruin Creative Writing Hallucination	78	72	72	71	69	73%
Horror: alone in an eerie place at night Creative Writing Hallucination	85	83	76	75	74	78%
Literary fiction: old friends reunite Creative Writing Hallucination	86	82	82	80	79	82%
Mystery: examining a crime scene Creative Writing Hallucination	84	78	78	77	74	78%
Romance: separated couple reunites Creative Writing Hallucination	82	80	79	76	75	79%
Thriller: chase through city streets Creative Writing Hallucination	84	83	80	80	74	80%
Novelcrafter Default Prompt						78.32%
77.08%

Codex Extraction

Evaluates a model's ability to extract structured codex entries (characters, locations, objects, lore) from prose passages and return them as well-formed XML.

Scenario	#1	#2	#3	#4	#5	Total
Long: The Spire of Echoes (Dense) Tooling Reasoning	97	97	97	97	96	97%
Medium: The Hollow (Inferred) Tooling Reasoning	98	98	97	96	96	97%
Medium: Through the Thornveil (Scattered) Tooling Reasoning	98	97	97	97	96	97%
Short: The Rusty Lantern (Explicit) Tooling Reasoning	100	100	100	100	99	99%
97.57%

Codex Red Herring (False Positive Detection)

Tests whether models correctly report "no violations" when a codex is fully consistent with the prose passage. Models that hallucinate false violations (false positives) fail. Uses a 2×2 matrix of text length × codex size, with bare and detailed-entry variants.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
basic entries
Long text (~1594 words), big codex (51 entries) Hallucination	8	7	6	6	6	5	4	4	4	1	5%
Long text (~1594 words), small codex (11 entries) Hallucination	50	31	31	31	30	10	10	8	6	2	21%
Short text (~524 words), big codex (51 entries) Hallucination	42	42	33	30	29	26	10	10	8	3	23%
Short text (~524 words), small codex (11 entries) Hallucination	50	32	25	25	25	10	10	10	8	5	20%
basic entries											17.36%
detailed entries
Long text (~1594 words), big codex (51 detailed entries) Hallucination	13	13	10	10	8	7	5	3	2	1	7%
Long text (~1594 words), small codex (11 detailed entries) Hallucination	50	50	50	32	31	30	28	8	6	6	29%
Short text (~524 words), big codex (51 detailed entries) Hallucination	50	50	50	42	33	25	25	17	7	6	31%
Short text (~524 words), small codex (11 detailed entries) Hallucination	50	42	38	35	33	25	17	13	10	10	27%
detailed entries											23.44%
20.40%

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	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
matrix
Large codex (40 entries), long passage (1,019 words) Tooling Reasoning	96	93	92	91	89	87	86	76	62	3	77%
Large codex (40 entries), short passage (165 words) Tooling Reasoning	96	96	91	91	91	91	89	89	82	80	90%
Small codex (7 entries), long passage (734 words) Tooling Reasoning	100	100	100	100	92	92	92	92	92	92	95%
Small codex (7 entries), short passage (165 words) Tooling Reasoning	100	100	100	95	95	95	95	95	95	95	97%
matrix											89.74%
tiers
5 codex entries Tooling Reasoning	100	100	100	100	100	100	100	100	100	66	97%
10 codex entries Tooling Reasoning	100	100	100	100	100	100	86	86	86	86	94%
20 codex entries Tooling Reasoning	92	92	92	89	88	88	85	85	85	79	87%
40 codex entries Tooling Reasoning	100	100	92	92	92	92	92	87	83	83	91%
tiers											92.43%
91.08%

Data extraction

Extract key details from a given block of text.

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

Dialogue tags

Various tasks related to dialogue tags in text.

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
dialogue-200
Write 200 words with 10% dialogue Rule Following Utility	74	72	72	68	66	56	44	36	19	18	53%
Write 200 words with 50% dialogue Rule Following Utility	100	60	50	42	34	18	14	2	0	0	32%
Write 200 words with 90% dialogue Rule Following Utility	89	87	80	75	64	49	44	19	18	18	54%
dialogue-200											46.31%
dialogue-500
Write 500 words with 30% dialogue Rule Following Utility	26	17	0	0	0	0	0	0	0	0	4%
Write 500 words with 50% dialogue Rule Following Utility	4	0	0	0	0	0	0	0	0	0	0%
Write 500 words with 70% dialogue Rule Following Utility	1	0	0	0	0	0	0	0	0	0	0%
dialogue-500											1.60%
Ungrouped
Write unattributed dialogue Rule Following	100	100	100	100	100	100	100	100	14	1	81%
32.17%

Language Comprehension

Does the model understand more than just English?

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

Language Writing

Can the model generate text in different languages?

Scenario	#1	#2	#3	#4	#5	Total
Character dialogue (French) in a story Language	100	94	94	93	93	95%
Character dialogue (German) in a story Language	100	100	100	100	100	100%
Character dialogue (Hindi) in a story Language	100	100	54	50	46	70%
Character dialogue (Italian) in a story Language	100	100	100	100	100	100%
Character dialogue (Spanish) in a story Language	100	100	100	75	56	86%
90.21%

N-Length Sentences

Write sentences with exactly N words

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Write sentences with 5 words each Utility	100	91	82	78	78	78	78	78	78	78	82%
Write sentences with 10 words each Utility	100	84	84	74	72	72	70	65	52	35	71%
Write sentences with 20 words each Utility	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	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
outline-count
Count acts Utility	100	100	100	100	100	100	100	100	100	100	100%
Count chapters Utility	100	100	100	100	100	100	100	100	100	100	100%
Count scenes Utility	100	0	0	0	0	0	0	0	0	0	10%
outline-count											70.00%
pov-count
Count point of views for Jack and Olivia Utility	100	100	100	100	100	100	100	100	100	100	100%
Count point of views for Jack Harper Utility	100	100	100	100	100	100	100	100	0	0	80%
Count point of views for Olivia Utility	100	100	100	100	100	100	100	100	100	100	100%
pov-count											93.33%
81.67%

Text Replacement

Tests deterministic text transformations: renaming characters/locations, expanding contractions, tense rewriting, POV shifts, gender swaps, combined transformations, and word avoidance. Scored by checking each expected change independently.

Scenario	#1	#2	#3	#4	#5	#6	#7	Total
Generic Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	100	100%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	100	100%
Combined: 3rd person past → 1st person present Text Editing	99	99	99	99	99	99	99	99%
Expand all contractions Text Editing	100	100	100	100	100	100	100	100%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	100	100%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	100	100	100	100	100	100	100%
Passive voice → active voice Text Editing Hallucination	96	96	96	96	96	96	93	96%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	100	100%
Tense rewriting: past to present Text Editing	100	99	99	99	99	99	99	99%
Generic Prompt								99.34%
Specific Prompt
Avoid said/asked/replied/answered Text Editing	100	100	100	100	100	100	100	100%
Character rename: Elena->Mirabel, Gregor->Aldric Text Editing	100	100	100	100	100	100	100	100%
Combined: 3rd person past → 1st person present Text Editing	99	99	99	99	99	99	98	99%
Expand all contractions Text Editing	100	100	100	100	100	100	100	100%
Location rename: market square, outer ring, bridge, northern mines Text Editing	100	100	100	100	100	100	100	100%
Multi-character gender swap: Priya(F)->Rohan(M), Mara unchanged Text Editing	100	100	100	100	100	100	90	99%
Passive voice → active voice Text Editing Hallucination	98	98	96	96	96	96	96	97%
POV shift: 3rd person to 1st person (Elena's perspective) Text Editing	100	100	100	100	100	100	100	100%
Tense rewriting: past to present Text Editing	100	100	100	100	100	100	100	100%
Specific Prompt								99.35%
99.34%

Tool usage within Novelcrafter

Output messages that are related to tool usage within Novelcrafter

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Create alternate prose sections Tooling	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	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
Multiple speakers Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Simple Rule Following	100	100	100	100	100	100	100	100	100	100	100%
Simple (1-shot) 1-shot Rule Following	100	100	100	100	100	100	100	100	100	0	90%
Simple (5-shot) Few-shot Rule Following	100	100	100	100	100	100	100	100	0	0	80%
Unattributed dialogue Rule Following	100	100	100	100	100	100	0	0	0	0	60%
86.00%

Write N of X

Write exactly N words/sentences/paragraphs...

Scenario	#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	Total
paragraphs
1 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
5 paragraph summary Utility	100	100	100	100	100	100	100	100	100	100	100%
paragraphs											100.00%
sentences
1 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
3 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
10 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
20 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
50 sentence summary Utility	100	100	100	100	100	100	100	100	100	100	100%
sentences											100.00%
words
10 word summary Utility	100	100	100	100	100	100	100	100	100	98	100%
20 word summary Utility	100	100	100	100	100	100	100	98	98	98	99%
50 word summary Utility	100	100	100	98	98	98	77	77	54	2	81%
100 word summary Utility	77	2	2	0	0	0	0	0	0	0	8%
200 word summary Utility	0	0	0	0	0	0	0	0	0	0	0%
words											57.57%
83.68%