NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-17-01KHMMF418WCH1Q7CX80PZWMVC
Run Details
Model:
Claude 3 Haiku
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
17.7s
Cost:
$0.002027
Provider:
Amazon Bedrock
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="4417" name="Tomás Herrera" aliases="Tommy, Tomás, Herrera" pronouns="he/him" species="Human" storyRole="Support"> <eyeColor>warm brown</eyeColor> <hair>short curly dark brown</hair> <height>5'10"</height> <age>29</age> <skinTone>olive skin</skinTone> <scar>scar running along his left forearm from a knife attack</scar> <medallion>Saint Christopher medallion around his neck</medallion> <birthplace>Seville, Spain</birthplace> <description>A former paramedic who provides off-the-books medical care for the clique.</description> <backstory>Born in Seville, Spain. He moved to London to work for the NHS but lost his license after administering unauthorized treatments to supernatural patients.</backstory> </character> <location id="854" name="The Raven's Nest" aliases="the Nest, Raven, Silas' bar" realm="Earth"> <signColor>distinctive green neon sign above the entrance</signColor> <secretRoom>hidden back room accessible through a bookshelf, used for clandestine meetings</secretRoom> <description>A dimly lit bar in Soho, London. The walls are covered with old maps and black-and-white photographs.</description> </location> <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> </codex> Write a fully fleshed out scene of at least 1000 words in the thriller genre. A detective is pursuing a suspect through rain-soaked city streets at night. The chase takes them from the street level down into an underground market. The detective must decide whether to follow the suspect into unfamiliar and potentially dangerous territory. 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
The rain fell in a steady drumbeat against the pavement as Detective Harlow Quinn raced down the deserted Soho street, her
footsteps
pounding in pursuit of the fleeing figure just ahead. The suspect, a young man named Tomás Herrera, weaved through the puddles and shadows, his olive skin
glistening
in the flickering streetlights. Quinn's blood roared in her ears, the adrenaline coursing through her veins as she closed the distance, her sharp-jawed features set in grim determination. She had been tracking Herrera for weeks, suspecting him of ties to the criminal clique she had been investigating. Now, she was tantalizingly close to apprehending him. Herrera darted down an alley, his short, curly hair plastered to his forehead. Quinn followed, her worn leather
watch
glinting
as she pumped her arms, her military-precise bearing lending urgency to her movements. The alley was narrow and dark, the sounds of their
footsteps
and heavy breathing
echoing
off the damp brick walls. Suddenly, Herrera veered to the left, disappearing through a battered metal doorway. Quinn's
eyes narrowed
as she reached the threshold, the dim light revealing a set of concrete stairs leading downward. She hesitated for a split second, uncertainty flickering across her face. The Veil Market, an infamous supernatural black market, lay beneath these streets – a place she had only heard whispers about, a realm of the unknown that she had purposefully avoided. But her duty as a detective, her determination to uncover the truth, hardened her resolve. Without a moment's pause, she plunged down the steps, the sound of her boots
echoing
in the narrow stairwell. The air grew thick and musty, and the temperature dropped several degrees as she descended into the unknown. At the bottom, she found herself in a dimly lit passageway, the walls lined with moss-covered brick. The air felt heavy, charged with an undercurrent of something unseen. Quinn tightened her grip on her sidearm, her brown eyes scanning the shadows for any sign of Herrera. Ahead, she spotted a faint green glow, the distinctive neon sign of The Raven's Nest, a bar she had heard was a hub for the supernatural community. Steeling herself, she pressed onward, her steps cautious but purposeful. As she approached the bar, the sounds of muted conversation and the clink of glasses reached her ears. Pushing open the heavy wooden door, she stepped inside, the warm light and the scent of stale cigarette smoke enveloping her. The patrons, a diverse array of individuals, turned to regard her with a mixture of curiosity and suspicion. Quinn scanned the room, her gaze sweeping over the old maps and black-and-white photographs that adorned the walls. Her eyes landed on a bookshelf in the corner, and she noticed a faint shimmer of energy around it – a sign that there was more to this place than met the eye. Narrowing her eyes, she
started to
make her way towards the bookshelf, her senses heightened, when a voice called out to her. "Well, well, if it isn't Detective Harlow Quinn. What brings you to our humble establishment?" Quinn turned to see a man standing behind the bar, his expression a mixture of amusement and barely concealed disdain. He was tall and slender, with a sharp jawline and piercing blue eyes that
seemed to
bore into her soul. "Silas," she said, her voice low and steady. "I'm looking for someone. A man named Tomás Herrera." Silas's lips curled into a smile, and he leaned against the bar, his arms crossed over his chest. "Ah, yes, our dear Tomás. I'm afraid I haven't seen him tonight." Quinn's
eyes narrowed
, and she took a step forward, her hand instinctively moving towards her sidearm. "Don't play games with me, Silas. I know he came in here, and I need to speak with him." Silas raised his hands in a placating gesture, his expression darkening. "Now, now, Detective, let's not do anything rash. This is my establishment, and I won't have you barging in and causing a scene." The other patrons had grown silent, their eyes fixed on the confrontation unfolding before them. Quinn could feel the tension in the air, the subtle shift in the atmosphere as the supernatural energy
seemed to
hum around her. "I'm not leaving until I find Herrera," she said, her voice firm and unyielding. "So, I suggest you tell me where he is, or I'll have this place turned upside down." Silas's expression hardened, and he leaned forward, his eyes narrowing. "You don't have the authority here, Detective. This is our world, and you're not welcome." The words had barely left his lips when a sudden commotion erupted from the back of the bar. Quinn's head snapped towards the sound, and she caught a glimpse of a familiar figure disappearing through a hidden doorway behind the bookshelf. Without a moment's hesitation, she darted towards the bookshelf, her hand reaching for her sidearm. But before she could draw her weapon, Silas stepped in front of her, his body blocking her path. "I can't let you go any further, Detective," he said, his voice low and menacing. "This is where your investigation ends." Quinn's
heart pounded in her chest
, the adrenaline coursing through her veins as she stared down the
imposing
figure before her. She knew she was in unknown territory, surrounded by unknown forces, but her determination to uncover the truth
was unwavering
. "Get out of my way, Silas," she growled, her hand tightening around the grip of her sidearm. Silas's lips curled into a smile, and he chuckled
softly
. "Oh, Detective, you have no idea what you're up against." The air grew thick with tension, and Quinn
knew that the
moment of reckoning was upon her. She had to make a choice – turn back and walk away, or plunge headfirst into the unknown, determined to follow the trail of her suspect, no matter where it led.
created_at
"2026-02-17T01:47:21.615177+00:00"
2/17/2026, 1:47:21 AM
model
"anthropic/claude-3-haiku"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
913
moderation_latency
273
generation_time
17317
tokens_prompt
914
tokens_completion
1498
native_tokens_prompt
917
native_tokens_completion
1438
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
0.00202675
router
(null)
provider_responses
0
id
"795c7f7a-657e-4333-b27f-d647a4dc66a7"
status
200
is_byok
false
latency
910
endpoint_id
"401c6f0f-caeb-4c84-92b7-e163dbccf7c2"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-3-haiku"
api_type
"completions"
id
"gen-1771292823-4Z6qKnzWgGeJjIteX0oh"
upstream_id
"795c7f7a-657e-4333-b27f-d647a4dc66a7"
total_cost
0.00202675
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
50.0000%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
4
adverbTagCount
1
adverbTags
0
"she growled, her hand tightening around the grip of her sidearm [around]"
79.6541%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
983
totalAiIsmAdverbs
2
found
0
adverb
"softly"
count
1
1
adverb
"suddenly"
count
1
highlights
0
"softly"
1
"suddenly"
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)
18.6165%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
983
totalAiIsms
8
found
0
word
"glistening"
count
1
1
word
"glinting"
count
1
2
word
"imposing"
count
1
3
word
"unwavering"
count
1
4
word
"footsteps"
count
2
5
word
"echoing"
count
2
highlights
0
"glistening"
1
"glinting"
2
"imposing"
3
"unwavering"
4
"footsteps"
5
"echoing"
33.3333%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
3
maxInWindow
3
found
0
label
"heart pounded in chest"
count
1
1
label
"eyes widened/narrowed"
count
2
highlights
0
"heart pounded in her chest"
1
"eyes narrowed"
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
3
narrationSentences
47
filterMatches
0
"watch"
hedgeMatches
0
"started to"
1
"seemed to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
56
matches
0
"knew that the"
65.9407%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
26
mean
37.73
std
14.37
cv
0.381
sampleLengths
0
53
1
51
2
53
3
73
4
52
5
46
6
37
7
57
8
51
9
22
10
15
11
40
12
17
13
30
14
35
15
34
16
38
17
31
18
25
19
41
20
33
21
21
22
41
23
17
24
20
25
48
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
0
totalSentences
47
matches
(empty)
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
126
matches
0
"was unwavering"
94.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
835
adjectiveStacks
1
stackExamples
0
"infamous supernatural black market,"
adverbCount
12
adverbRatio
0.01437125748502994
lyAdverbCount
10
lyAdverbRatio
0.011976047904191617
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
56
echoCount
0
echoWords
(empty)
76.0477%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
56
mean
17.52
std
5.96
cv
0.34
sampleLengths
0
31
1
22
2
24
3
19
4
8
5
13
6
20
7
20
8
12
9
19
10
11
11
31
12
15
13
19
14
18
15
17
16
11
17
18
18
27
19
10
20
18
21
21
22
18
23
18
24
33
25
22
26
15
27
20
28
20
29
8
30
9
31
18
32
12
33
16
34
19
35
11
36
23
37
15
38
23
39
14
40
17
41
10
42
15
43
18
44
23
45
15
46
18
47
15
48
6
49
21
75.5952%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
1
diversityRatio
0.4642857142857143
totalSentences
56
uniqueOpeners
26
100.0000%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
4
fancyCount
1
fancyTags
0
"she growled, her hand tightening around the grip of her sidearm (growl, tighten around)"
81.9522%