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Run: 2026-02-17-01KHMMG7KN42Q1FGADYEV8JPXJ
Run Details
Model:
Claude 3.5 Sonnet
Test:
Bad Writing Habits
Scenario:
Thriller: chase through city streets
Duration:
40.2s
Cost:
$0.042342
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
Detective Quinn's boots splashed through puddles as she pursued the figure ahead, her breath coming in controlled bursts. The rain pelted her face, but she kept her quarry in sight - a man in a dark jacket who'd bolted from The Raven's Nest the moment she'd shown her warrant card. He was quick, but Quinn had spent eighteen years chasing suspects through London's labyrinthine streets. The suspect darted down an alley off Camden High Street, weaving between overflowing bins and stacks of sodden cardboard. Quinn followed, her hand brushing the grip of her holstered pistol. Her
watch
clicked against the weapon's metal - a sound that reminded her of Morris, of that last chase three years ago. She pushed the memory aside. Focus on the now. The man ahead stumbled on wet cobblestones, his shoulder clipping a brick wall. In the dim light, Quinn caught a glimpse of olive skin, curly dark hair. Tomás Herrera. The unlicensed medic she'd been investigating for months. He recovered
quickly
, ducking through a rusted maintenance door that Quinn knew led to an abandoned Tube station. She slowed her pursuit, stopping at the threshold. Water dripped from her close-cropped hair as she studied the darkness beyond. The station had
been decommissioned
decades ago, but lately she'd heard whispers about what went on in these forgotten spaces beneath the city. Whispers that reminded her too much of the night she lost Morris. "Metropolitan Police!" Her voice
echoed
in the tunnel. "Stop where you are, Herrera!" Only the steady drip of water answered. Quinn pulled out her torch, its beam cutting through the gloom. Rust-stained tiles lined the walls, and ancient adverts peeled beneath layers of graffiti. The air carried a metallic tang that didn't match the usual underground must. She descended the emergency stairs, each step precise despite her racing pulse. At the bottom, boot prints in the dust led deeper into the station. But something was wrong. The tracks didn't match the chaos of their chase - these were orderly, purposeful. Like they'd
been left
by regular foot traffic. Quinn followed the trail, torch beam sweeping methodically. The main platform ahead had
been transformed
. String lights crisscrossed the ceiling, casting a warm glow over what looked like market stalls. But they were empty now, leaving only hints of their purpose - strange stains on tablecloths, scattered dried herbs, empty glass vials that caught the light. A sound
echoed
from further down the tunnel -
footsteps
, and something else. Voices speaking in languages she didn't recognize. Quinn checked her
watch
- an old habit that helped steady her nerves. The worn leather band was slick with rain. This was the part where protocol said to call for backup. But backup hadn't helped Morris. Sometimes you had to follow your instincts, even when they led you into the dark. She moved deeper into the station, past the empty market stalls. The voices grew louder. A warm breeze carried the scent of incense and something sharper, chemical. At the edge of her torch beam, she caught movement - shadows that didn't quite match the shapes casting them. Herrera appeared at the far end of the platform, his Saint Christopher medallion
glinting
in the strange light. He
wasn't running
anymore. Instead, he held something in his outstretched hand - what looked like a small disc of polished bone. "Detective Quinn," he called, his Spanish accent more pronounced under stress. "You don't want to be here. Go back up. File your report. Say I escaped." "You know I can't
do that." Quinn
kept her torch trained on him, her other hand near her weapon. "Whatever you're involved in, whatever you're protecting - it's not worth throwing your life away." He laughed, but there was no humor in it. "My life? Detective, I lost my medical license because I chose to help people you don't even believe exist. But they're real. As real as whatever took your partner." Quinn's grip tightened on the torch. "What do you know about Morris?" "Only rumors. But if you follow me through that gate-" he gestured to what looked like an ordinary maintenance door behind him "-you'll start to understand. Your choice, Detective. But you'll need this to enter." He placed the bone disc on the ground between them. The voices beyond the door grew louder, and Quinn caught fragments of conversation about prices and trades. The Veil Market. She'd dismissed it as criminal folklore, but now... She thought of Morris. Of the impossible things she'd glimpsed that night. Of the questions that had haunted her for three years. "Last chance," Herrera said. "Walk away, or pick up the token and face what's
really
out there. But if you come through, you're entering their world. And they play by different rules." Quinn took a step forward, then another. The bone token felt warm in her palm, like it had absorbed the heat of countless hands before hers. She looked up to find Herrera
watch
ing her with something like sympathy in his warm brown eyes. "Their world," she said, "has some questions to answer." She followed him through the door, leaving the familiar darkness of London's underground for something deeper, stranger, and far more dangerous. But maybe, finally, she'd learn the truth about what
happened to
Morris. Even if that truth changed everything she thought she knew about the city she'd sworn to protect.
created_at
"2026-02-17T01:48:20.896654+00:00"
2/17/2026, 1:48:20 AM
model
"anthropic/claude-3.5-sonnet"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
993
moderation_latency
187
generation_time
40010
tokens_prompt
914
tokens_completion
1384
native_tokens_prompt
917
native_tokens_completion
1228
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
0.042342
router
(null)
provider_responses
0
id
"8c266886-15a0-476c-854d-767420c71f69"
status
200
is_byok
false
latency
993
endpoint_id
"0e1957b3-205b-49d5-8413-13af3f68676d"
provider_name
"Amazon Bedrock"
model_permaslug
"anthropic/claude-3.5-sonnet"
api_type
"completions"
id
"gen-1771292860-4bnl4bRIIACeFynvz9G0"
upstream_id
"8c266886-15a0-476c-854d-767420c71f69"
total_cost
0.042342
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
22.2222%
Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags
3
adverbTagCount
1
adverbTags
0
"he called, his Spanish accent more pronounced under stress [more]"
77.5785%
AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount
892
totalAiIsmAdverbs
2
found
0
adverb
"quickly"
count
1
1
adverb
"really"
count
1
highlights
0
"quickly"
1
"really"
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)
55.1570%
AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount
892
totalAiIsms
4
found
0
word
"glinting"
count
1
1
word
"footsteps"
count
1
2
word
"echoed"
count
2
highlights
0
"glinting"
1
"footsteps"
2
"echoed"
100.0000%
Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches
0
maxInWindow
0
found
(empty)
highlights
(empty)
100.0000%
Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells
0
narrationSentences
64
matches
(empty)
100.0000%
Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount
2
hedgeCount
1
narrationSentences
64
filterMatches
0
"watch"
1
"watch "
hedgeMatches
0
"happened to"
100.0000%
Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount
1
totalSentences
70
matches
0
"do that.\" Quinn"
85.6746%
Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs
24
mean
37.42
std
16.83
cv
0.45
sampleLengths
0
65
1
61
2
55
3
55
4
13
5
7
6
37
7
51
8
56
9
20
10
52
11
47
12
40
13
26
14
34
15
38
16
12
17
45
18
28
19
22
20
32
21
43
22
9
23
50
100.0000%
Passive voice overuse
Target: ≤5% passive sentences
passiveCount
3
totalSentences
64
matches
0
"been decommissioned"
1
"been left"
2
"been transformed"
100.0000%
Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount
1
totalVerbs
126
matches
0
"wasn't running"
100.0000%
Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount
752
adjectiveStacks
0
stackExamples
(empty)
adverbCount
19
adverbRatio
0.02526595744680851
lyAdverbCount
8
lyAdverbRatio
0.010638297872340425
100.0000%
Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences
70
echoCount
0
echoWords
(empty)
100.0000%
Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences
70
mean
12.83
std
7.57
cv
0.59
sampleLengths
0
18
1
32
2
15
3
19
4
11
5
22
6
5
7
4
8
13
9
14
10
2
11
8
12
18
13
8
14
12
15
23
16
12
17
8
18
5
19
7
20
11
21
13
22
13
23
12
24
13
25
4
26
14
27
8
28
8
29
7
30
15
31
26
32
13
33
7
34
13
35
8
36
11
37
5
38
15
39
11
40
4
41
12
42
20
43
18
44
4
45
18
46
11
47
15
48
19
49
15
75.2381%
Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats
4
diversityRatio
0.4857142857142857
totalSentences
70
uniqueOpeners
34
91.6667%
Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags
3
fancyCount
1
fancyTags
0
"he called, his Spanish accent more pronounced under stress (call, accent more)"
88.6786%