Run: 2026-09-29-01M3P2DCT4E66147833CZ1BE4G

Run Details

Duration:
37.4s
Cost:
$0.037644
Provider:
Claude Platform on AWS

Model input

System
You are an expert fiction writer. Always keep the following rules in mind: - Write in past tense and use General English spelling, grammar, and colloquialisms/slang. - Write in active voice - Always follow the "show, don't tell" principle. - Avoid adverbs and cliches and overused/commonly used phrases. Aim for fresh and original descriptions. - Convey events and story through dialogue. - Mix short, punchy sentences with long, descriptive ones. Drop fill words to add variety. - Skip "he/she said said" dialogue tags and convey people's actions or face expressions through their speech - Avoid mushy dialog and descriptions, have dialogue always continue the action, never stall or add unnecessary fluff. Vary the descriptions to not repeat yourself. - Put dialogue on its own paragraph to separate scene and action. - Reduce indicators of uncertainty like "trying" or "maybe" When writing text: - NEVER conclude the scene on your own, follow the beat instructions very closely. - NEVER end with foreshadowing. - NEVER write further than what I prompt you with. - AVOID imagining possible endings, NEVER deviate from the instructions. - STOP EARLY if the continuation contains what was required in the instructions. You do not need to fill out the full amount of words possible.
User/Human
Take into account the following glossary of characters/locations/items/lore... when writing your response: <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> Continue the story using the following instructions: <instructions> 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. </instructions>

Model response

AI
The stairwell to the old Camden platform stank of wet brick and pigeon. Quinn took the last step, and the beam of her torch swung across the tiles. Cream and green, cracked like old teeth. Somebody had strung police tape between two iron pillars, and it looked out of place, a bright modern scab on a wound a century old. "Guv." DS Okafor waited by the platform edge with his hands buried in the pockets of his overcoat. "Sorry about the hour. The council's maintenance crew found him at half five. They came to check the ventilation shaft." "Where's the shaft?" "Behind you. Forty feet back." "Then why is he here?" Okafor blinked. "Sorry?" "Forget it. Show me." The body lay on the platform's lip, one arm dangling over the drop to the tracks. Male, fifties, grey tweed jacket, good shoes. A dark crust of blood ringed the back of his skull. Quinn crouched, and the worn leather strap of her watch creaked against her wrist as she planted her hand on her knee. "Go on, then," she said. "Your version." "Simple enough." Okafor nodded at the pillars. "Rough sleeper's den, or a dealer's. Our man comes down for a deal, or to get out of the rain. Someone shoves him. He cracks his head on the platform edge and goes down. Pockets are out, see? Wallet gone, phone gone. Robbery gone wrong." "Pockets are out." "Both of them. Trouser ones too." Quinn lifted the corner of the tweed with a gloved finger. The lining of the inside pocket hung loose, but the fabric was smooth. No crease, no stretch, no thread torn from a frantic hand. "A man who robs a corpse in a hurry drags the lining. Look at that. Somebody folded it out like a waiter turning down a bed." "Maybe they were careful." "Maybe they were staged." She pointed her torch at the floor beside his head. "Blood." "Yeah. Loads of it." "Where?" Okafor looked. A tidy dark halo spread beneath the skull, no wider than a dinner plate. "There. Under him." "Under him. Not on the edge he supposedly struck. Not down the lip, not on the tracks." She swept the beam over the concrete lip, pale and gritty and dry. "Head wounds bleed like taps, Imran. If he cracked his skull on that edge, I'd expect a smear the length of my arm. I see a saucer." "He could've been moved after." "By whom? And why would they move him, then leave him at the edge?" Okafor rubbed the back of his neck. "Panic?" "A person who panics doesn't fold pockets." She stood, and her knees cracked. "What's the wound look like?" He crouched beside her, grimacing. "Depressed fracture. Round-ish. About the size of a fifty-pence piece." "Round. The platform edge is a straight line. So is the rail." Quinn stepped back and studied the wall of the tunnel mouth, where the light died in soot. "Whatever hit him was small, and it was swung." "Or he fell on something." "Then show me the something." Neither of them spoke. Water dripped somewhere in the dark, a slow tick like a clock in an empty house. Quinn walked the length of the platform, torch angled low. Dust lay over everything, a grey felt a decade thick. Her boots left clean prints in it. Okafor's did too. She stopped and turned around. "How many people came down those stairs before us?" "Maintenance crew. Two blokes. Uniform, PC Adeyemi and her partner. Then us." "So six sets of feet." "Give or take." "Come here." She swung the torch flat across the floor, and the low beam raked the dust into ridges. "Tell me what you see." He squinted. "Footprints. Ours." "Look past ours." Okafor moved closer, then dropped to one knee. His mouth tightened. "There's... patches. Squares. Bare concrete." "Rows of them." Quinn walked the beam along the platform. Rectangles of clean floor, each roughly six feet by four, ran in a broken line down the length of the station. Between them, narrow lanes of dust lay scuffed to nothing. "Something stood here. A lot of somethings. Tables, stalls, crates. Then they were lifted away. And the ground between them was trodden flat by a great many feet." "A squat, then. Somebody running an illegal rave." "On a platform with no power, no ventilation, and one exit? Ravers leave bottles. Foil. Glow sticks. This floor is cleaner than my kitchen." She turned. "Nothing dropped, nothing left. Except him." "Guv, we don't know he's the only thing." "Fair." She pointed. "Then explain his hand." The dead man's left hand curled against his chest, fingers locked in a fist. Okafor leaned over and Quinn eased the fingers open one by one. Rigor had set in, and the joints gave with a faint, wet click. A small brass compass lay in the palm, its casing furred with green verdigris. Tiny sigils crowded the glass, etched in fine lines that caught the torchlight. Quinn tilted it. The needle swung, shivered, then locked on a point. Not north. She turned her wrist, and the needle held steady as a bird dog, aimed at the blank tiled wall beyond the tracks. "Antique?" Okafor asked. "Nothing that old is that clean inside." She turned again, walking a slow half-circle. The needle stayed on the wall. "It points at the same spot from anywhere in this room." "Magnetised something. Iron in the brickwork." "Then it would drift when I move. This doesn't drift." She held it up to his face. "Do you have a better explanation?" "Not one I'd say out loud." "Say it anyway." Okafor exhaled through his nose. "Fine. He was a collector. Bought it from some dodgy antiques dealer. Came down here to test it, hit his head, died. The rest is coincidence. Missing wallet, folded pockets, all of it. Tramps come through and tidy a body." "Tramps who fold and sweep." Quinn snapped the compass into an evidence bag and sealed it. "Look at his shoes." He looked. The soles were pristine, the leather uncreased. Not a grain of dust on them. "He's not walked in here," she said. "Every step I took left a print. Yours too. Two blokes from maintenance, same. This man's feet never touched the floor before he lay on it. No trail of prints leading to the body. Not from the stairs, not from the tunnel." Okafor's face went slack. "So he was carried." "Carried, and set down. Blood already dry on the back of his head, cleaned up once and then let seep. Somebody wanted him found here." She looked at the bare rectangles again, at the ghostly grid of a marketplace that had packed itself up and vanished. "Or wanted him left behind." "By who?" "By whoever stood in those rows, Imran. Dozens of them. Traders, buyers, whatever you call them. Somebody killed him in the middle of a crowd, and the crowd cleaned up after itself in a hurry." She tucked the bag inside her coat. "Get forensics to lift every scrap of that dust. Every square. I want to know what stood where." Okafor pushed himself upright. "And the compass?" Quinn glanced at the wall. The tiles there looked like every other tile, smeared with soot, cracked at one corner. "That," she said, "I'm keeping."
created_at"2026-09-29T07:52:34.383Z" 9/29/2026, 7:52:34 AM
model"anthropic/claude-sonnet-5.5-20260928"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3568
moderation_latency(null)
generation_time37377
tokens_prompt1112
tokens_completion2113
native_tokens_prompt1597
native_tokens_completion3445
native_tokens_completion_images(null)
native_tokens_reasoning884
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.037644
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790668354-NtJVoac9hoGcBilO7rG6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790668354-9v2hBqsftYXxW4cjVbH5"
upstream_id"msg_011CfXNJSJAwUizoZWLuzhHB"
provider_responses
0
endpoint_id"99aaad94-923b-4fc1-b763-271ed5486f7a"
id"msg_011CfXNJSJAwUizoZWLuzhHB"
is_byokfalse
latency867
model_permaslug"anthropic/claude-sonnet-5.5-20260928"
provider_name"Claude Platform on AWS"
status200
total_cost0.037644
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags19
adverbTagCount2
adverbTags
0"Quinn stepped back [back]"
1"She turned again [again]"
dialogueSentences70
tagDensity0.271
leniency0.543
rawRatio0.105
effectiveRatio0.057
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1223
totalAiIsmAdverbs0
found(empty)
highlights(empty)
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
91.82% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1223
totalAiIsms2
found
0
word"etched"
count1
1
word"pristine"
count1
highlights
0"etched"
1"pristine"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences65
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences65
filterMatches
0"watch"
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences116
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen46
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1223
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions9
unquotedAttributions0
matches(empty)
48.99% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions24
wordCount594
uniqueNames4
maxNameDensity2.02
worstName"Okafor"
maxWindowNameDensity2.5
worstWindowName"Okafor"
discoveredNames
Camden1
Okafor12
Quinn10
Rectangles1
persons
0"Okafor"
1"Quinn"
places(empty)
globalScore0.49
windowScore0.833
91.86% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences43
glossingSentenceCount1
matches
0"looked like every other tile, smeared wit"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1223
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences116
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs62
mean19.73
std19.08
cv0.967
sampleLengths
060
138
23
35
45
53
64
756
87
952
103
116
1261
134
1415
154
161
1719
1857
195
2014
218
2218
2315
2438
255
265
2720
2835
299
3012
315
323
3324
344
353
3616
3769
388
3932
408
417
4239
4339
4424
453
4631
476
4823
496
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount0
totalSentences65
matches(empty)
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs98
matches(empty)
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount0
flaggedSentences0
totalSentences116
ratio0
matches(empty)
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount595
adjectiveStacks0
stackExamples(empty)
adverbCount13
adverbRatio0.021848739495798318
lyAdverbCount2
lyAdverbRatio0.0033613445378151263
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences116
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences116
mean10.54
std9.72
cv0.922
sampleLengths
013
115
27
325
418
520
63
75
85
92
101
114
1216
137
1411
1522
165
172
187
1945
203
216
2211
2313
2411
2526
264
2714
281
294
301
312
3214
333
3430
3527
365
3714
387
391
4013
415
425
4310
4429
459
465
475
484
4916
98.28% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats2
diversityRatio0.603448275862069
totalSentences116
uniqueOpeners70
0.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount0
totalSentences54
matches(empty)
ratio0
100.00% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount13
totalSentences54
matches
0"She pointed her torch at"
1"She swept the beam over"
2"She stood, and her knees"
3"He crouched beside her, grimacing."
4"Her boots left clean prints"
5"She stopped and turned around."
6"She swung the torch flat"
7"His mouth tightened."
8"She turned her wrist, and"
9"She turned again, walking a"
10"She held it up to"
11"She looked at the bare"
12"She tucked the bag inside"
ratio0.241
6.30% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount49
totalSentences54
matches
0"The stairwell to the old"
1"Quinn took the last step,"
2"Cream and green, cracked like"
3"Somebody had strung police tape"
4"DS Okafor waited by the"
5"The body lay on the"
6"A dark crust of blood"
7"Quinn crouched, and the worn"
8"Okafor nodded at the pillars"
9"Quinn lifted the corner of"
10"The lining of the inside"
11"She pointed her torch at"
12"A tidy dark halo spread"
13"She swept the beam over"
14"Okafor rubbed the back of"
15"She stood, and her knees"
16"He crouched beside her, grimacing."
17"Quinn stepped back and studied"
18"Neither of them spoke."
19"Water dripped somewhere in the"
ratio0.907
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences54
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences22
technicalSentenceCount0
matches(empty)
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags19
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount1
fancyTags
0"Quinn snapped (snap)"
dialogueSentences70
tagDensity0.071
leniency0.143
rawRatio0.2
effectiveRatio0.029
87.9082%