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Run: 2026-02-17-01KHMMH9NDKQ02NQTP3PAB0HAB
Run Details
Model:
Claude 3 Haiku
Test:
Bad Writing Habits
Scenario:
Mystery: examining a crime scene
Duration:
8.3s
Cost:
$0.001821
Provider:
Anthropic
Model input
System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<codex> <character id="4416" name="Detective Harlow Quinn" aliases="Quinn, Detective Quinn, Harlow" pronouns="she/her" species="Human" storyRole="Antagonist"> <eyeColor>brown</eyeColor> <hair>closely cropped salt-and-pepper</hair> <height>5'9"</height> <age>41</age> <jawline>sharp jaw</jawline> <watch>worn leather watch on her left wrist</watch> <bearing>military precision</bearing> <description>A Metropolitan Police detective with 18 years of decorated service who suspects the clique is involved in criminal activity.</description> <backstory>She lost her partner, DS Morris, during a case three years ago under unexplained circumstances that had supernatural origins she doesn't yet understand.</backstory> </character> <character id="4414" name="Eva Kowalski" aliases="Eva, Evie" pronouns="she/her" species="Human" storyRole="Best Friend"> <eyeColor>green</eyeColor> <hair>curly red</hair> <height>5'4"</height> <age>26</age> <glasses>round glasses</glasses> <satchel>worn leather satchel full of books</satchel> <freckles>freckled complexion</freckles> <nervousHabit>tucking hair behind her left ear</nervousHabit> <description>Aurora's childhood friend and an occult researcher.</description> <backstory>Moved to London two years before Aurora and works as a research assistant at the British Museum's restricted archives. She holds a master's degree in Ancient History from Oxford.</backstory> </character> <location id="856" name="The Veil Market" aliases="Veil Market, the Market, underground market" realm="Earth"> <currentLocation>abandoned Tube station beneath Camden</currentLocation> <entryRequirement>bone token</entryRequirement> <schedule>moves locations every full moon</schedule> <description>A hidden supernatural black market that sells enchanted goods, banned alchemical substances, and information.</description> </location> <item id="2004" name="Veil Compass" aliases="the Compass, shadow compass" type="Tool" origin="The Veil Market"> <casingMaterial>small brass compass</casingMaterial> <faceMarkings>face etched with protective sigils</faceMarkings> <needle>points toward the nearest supernatural rift or portal</needle> <patina>casing has a patina of verdigris</patina> <creator>crafted by a Shade artisan</creator> <description>A compass attuned to supernatural energy.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the mystery genre. A detective arrives at a crime scene in an unusual location. Something is wrong — the evidence doesn't add up. A colleague is present, offering a different interpretation. Through careful observation and deduction, the detective begins to see what others have missed. Use the codex entries above as your world reference for characters and setting. Only include the prose of the scene without any markdown or commentary.
Model response
Messages
Meta
AI
Detective Harlow Quinn stepped out of her car, the gravel crunching under her boots as she surveyed the scene. This wasn't your typical crime scene — the abandoned Tube station beneath Camden was hardly a place you'd expect to find a body. She adjusted her worn leather
watch
as she approached the yellow police tape, nodding to the young constable guarding the entrance. "What do we have?" "Caucasian female, early thirties. Cause of death appears to be blunt force trauma to the head." The constable gestured toward the darkened tunnel. "We found her about fifty meters in, near the old service entrance." Harlow ducked under the tape, the familiar
weight
of her badge a reassuring presence against her hip. As she drew closer, she saw the victim lying motionless on the ground, her red curls fanned out around her head in a
macabre
halo.
A sense of unease
crept up Harlow's spine. Something about this scene felt off. A movement in the shadows caught her eye, and she tensed, hand drifting toward her sidearm. But it was only Detective Constable Eva Kowalski, emerging from the gloom, a small leather-bound notebook in her hand. "Quinn." Eva's brow
was furrowed
, her green eyes troubled behind her round glasses. "I was just about to call you." "Kowalski." Harlow relaxed
slightly
, though the uneasy feeling persisted. "What have you found?" "I'm not sure." Eva crouched beside the victim, her freckled fingers
gently
brushing back a lock of red hair. "The victim is Eva Kowalski — my friend, Aurora." Her voice
wavered
slightly
, and she cleared her throat. "I found her Veil Compass a few meters away, its needle spinning erratically." Harlow's
eyes narrowed
. The Veil Compass, a tool used to detect supernatural activity, was a rarity outside the underground Veil Market. What was it doing here? She knelt beside the body, her sharp gaze taking in the details. The victim's clothes were undamaged, no signs of a struggle. No defensive wounds on her hands or arms. Harlow's gloved fingers probed the back of the skull, feeling the small depression where the blow had landed. Efficient, clinical. This wasn't a crime of passion. "The cause of death is consistent with the constable's report," Harlow murmured, "but something doesn't add up. Where's her satchel? And why was she down here in the first place?" Eva's fingers tightened around the small notebook. "Aurora was researching the Veil Market for a book she was writing. She must have been trying to get more information." Harlow's gaze sharpened. "The Veil Market, you say? That's an unusual place for a researcher to be poking around." She stood, brushing off her trousers. "You seem to know a lot about this, Kowalski. Care to share?" Eva hesitated, then nodded. "The Veil Market is a hidden supernatural black market, located in various underground sites around the city. It deals in all manner of enchanted goods, alchemical substances, and information." Harlow's brows rose. "Supernatural, you say? That's a serious allegation." "I know it sounds unbelievable, but it's true." Eva's expression was earnest, her green eyes pleading for Harlow to understand. "Aurora and I have been researching the Veil Market for years. There's a whole hidden world beneath the surface of London, Detective. One that most people don't even know exists." Harlow considered her words, the unease in her gut deepening. She'd heard whispers of the Veil Market before, tales of the occult and the strange, but she'd always dismissed them as superstitious nonsense. Now, with the body of her friend's colleague lying before them, she
was forced
to reconsider. "All right, Kowalski." Harlow crossed her arms over her chest. "Say I believe you. What does this have to do with Aurora's death?" Eva's gaze dropped to the battered leather notebook in her hands. "I think Aurora may have discovered something she wasn't supposed to. Something that got her killed." Harlow's
eyes narrowed
. "And what, pray tell, might that be?" "I'm not sure." Eva's fingers traced the worn cover of the notebook. "But I think this might hold the answers." She looked up, determination
etched
in her features. "I'd like to accompany you, Detective. I want to find out what happened to Aurora." Harlow considered her for a long moment, then nodded. "Very well. But you stay close, and you do exactly as I say. Understood?" Eva's shoulders relaxed
slightly
, and she nodded. "Understood." Together, they turned their attention back to the crime scene, Harlow's mind whirring with questions. What had Aurora discovered that had cost her her life? And what other secrets was the Veil Market hiding? As she knelt beside the body once more, Harlow's gaze fell on the
glint
of metal peeking out from beneath the victim's sleeve. Carefully, she pushed the fabric aside, revealing a small brass compass, its face
etched
with
intricate
sigils. The needle spun wildly, as if drawn to some unseen force. Harlow's lips thinned. "Well, well. Looks like we've got ourselves a mystery, Kowalski."
created_at
"2026-02-17T01:48:23.533487+00:00"
2/17/2026, 1:48:23 AM
model
"anthropic/claude-3-haiku"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
326
moderation_latency
(null)
generation_time
8127
tokens_prompt
923
tokens_completion
1295
native_tokens_prompt
937
native_tokens_completion
1269
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0018205
router
(null)
provider_responses
0
id
"msg_0132E6KjRk9Wp9nsNX8VnZYy"
status
200
is_byok
false
latency
326
endpoint_id
"8661a1db-b0cf-4eb2-ba04-c2a79f698682"
provider_name
"Anthropic"
model_permaslug
"anthropic/claude-3-haiku"
api_type
"completions"
id
"gen-1771292894-6BKok4ITsZ1FlhRRkrEt"
upstream_id
"msg_0132E6KjRk9Wp9nsNX8VnZYy"
total_cost
0.0018205
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Anthropic"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
2
adverbTagCount
0
adverbTags
(empty)
27.3608%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
826
totalAiIsmAdverbs
6
found
0
adverb
"carefully"
count
1
1
adverb
"gently"
count
1
2
adverb
"slightly"
count
3
3
adverb
"very"
count
1
highlights
0
"carefully"
1
"gently"
2
"slightly"
3
"very"
100.0000%
AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
100.0000%
AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions
(empty)
found
(empty)
3.1477%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
826
totalAiIsms
8
found
0
word
"glint"
count
1
1
word
"wavered"
count
1
2
word
"macabre"
count
1
3
word
"intricate"
count
1
4
word
"furrowed"
count
1
5
word
"weight"
count
1
6
word
"etched"
count
2
highlights
0
"glint"
1
"wavered"
2
"macabre"
3
"intricate"
4
"furrowed"
5
"weight"
6
"etched"
33.3333%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
3
maxInWindow
3
found
0
label
"eyes widened/narrowed"
count
2
1
label
"sense of foreboding"
count
1
highlights
0
"eyes narrowed"
1
"A sense of unease"
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
47
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
1
hedgeCount
0
narrationSentences
47
filterMatches
0
"watch"
hedgeMatches
(empty)
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
0
totalSentences
64
matches
(empty)
81.5594%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
26
mean
31.81
std
13.85
cv
0.435
sampleLengths
0
42
1
25
2
35
3
56
4
35
5
20
6
13
7
50
8
38
9
44
10
30
11
28
12
37
13
33
14
10
15
50
16
49
17
23
18
27
19
10
20
43
21
23
22
8
23
34
24
51
25
13
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
2
totalSentences
47
matches
0
"was furrowed"
1
"was forced"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
0
totalVerbs
88
matches
(empty)
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
516
adjectiveStacks
1
stackExamples
0
"small leather-bound notebook"
adverbCount
16
adverbRatio
0.031007751937984496
lyAdverbCount
8
lyAdverbRatio
0.015503875968992248
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
64
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
64
mean
12.92
std
7.29
cv
0.564
sampleLengths
0
19
1
23
2
21
3
4
4
23
5
12
6
17
7
25
8
8
9
6
10
16
11
19
12
13
13
7
14
9
15
4
16
19
17
18
18
13
19
3
20
18
21
5
22
12
23
10
24
8
25
18
26
2
27
6
28
30
29
7
30
21
31
3
32
22
33
12
34
4
35
29
36
3
37
7
38
20
39
30
40
10
41
23
42
16
43
10
44
13
45
11
46
16
47
3
48
7
49
12
78.1250%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
0
diversityRatio
0.46875
totalSentences
64
uniqueOpeners
30
0.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
2
fancyCount
2
fancyTags
0
"Harlow murmured (murmur)"
1
"pleading (plead)"
77.5015%