Run: 2026-05-31-01KSYX8BGK4BDGRY3P2BDYQ587

Run Details

Duration:
41.3s
Cost:
$0.067650
Provider:
Anthropic

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 descended past the point where the city's hum gave way to silence. Detective Harlow Quinn took the steps two at a time, her torch beam swallowed by tiled walls slick with condensation. Somewhere below, generator lamps threw a cold white glare across what had once been a Northern Line platform, abandoned since the Blitz according to the file she'd skimmed on the drive over. The file had said nothing about why a body had turned up here. "Mind the gap, detective." DC Reyes stood at the bottom, clipboard tucked under one arm, his breath fogging. "Forensics finished an hour ago. We've been holding the scene for you." "Holding it." Quinn stepped onto the platform. The air tasted of rust and something sweeter beneath, like overripe fruit left to turn. "From who? There's nobody down here." "That's rather the point, isn't it." She didn't answer. She walked the length of the platform, counting under her breath. The lamps had been set in a loose ring around the centre of the scene, and there, on the cracked concrete, lay the body. Male. Forties, maybe. Dressed in a tailored coat too fine for a man who'd want to die in a derelict Tube station. His arms were folded across his chest. Folded — not flung, not splayed. Someone had arranged him. "Cause of death?" Quinn crouched, careful not to touch. "Pathologist's preliminary says cardiac arrest. No external trauma. No ligature marks, no defensive wounds." Reyes flipped a page. "Heart simply stopped. He was fit. Ran marathons, apparently. Name's Edmund Vance. Antiques dealer, Mayfair." "An antiques dealer drops dead of a heart attack on a sealed platform that's been closed since 1941." Quinn tilted her head. The dead man's face wore no fear. His eyes were shut, his expression smooth as poured wax. "And then arranges himself for burial." "We figure he had an accomplice. Came down to meet someone, got into difficulty, the other party panicked and laid him out. Guilt, maybe. People do strange things." Reyes spoke with the easy certainty of a man who'd already filed the conclusion in his head and was only waiting for the paperwork to catch up. "Trespassing gone wrong. We'll find the second party on the CCTV at the surface entrance." "There's no CCTV down here." "No. But the platform's a dead end. They'd have to come back up." Quinn rose. She let her torch travel along the tunnel mouth, where the rails vanished into dark. The deduction was tidy. Too tidy. Tidy the way a thing looked when someone wanted you to stop looking. "Walk me through how he got in," she said. Reyes shrugged. "Maintenance hatch off Camden High Street. Padlock was cut. We've got the chain bagged." "Cut from which side?" A pause. The clipboard lowered an inch. "Sorry?" "The chain. If your accomplice fled back up the stairs after panicking, the lock was already cut on the way in. Did the bolt cutters bite from outside or inside?" "I'd have to check." "Check." Quinn knelt again beside Vance. She drew a pen from her coat and used the tip to lift the man's lapel. No blood. No grime, despite the filth coating every surface around him. The coat was clean. The shoes too — polished leather without so much as a scuff, here in a place where each step she'd taken had ground decades of dust beneath her boots. A man who'd climbed through a maintenance hatch and descended a hundred ruined steps did not arrive with mirror-shined shoes. "He didn't come in the way you think," she said. "Detective—" "Look at the floor, Reyes." She swept her torch in a slow arc. The dust lay thick and undisturbed but for one set of prints — her own, and the cluster of forensics treads near the body. "Where are his footprints? Where's the accomplice's? Two men walk a hundred feet of platform deep in muck, and the only marks are the ones we made coming in." Reyes crouched beside her, frowning now, the certainty draining from his face. "Forensics would have logged—" "Forensics logged what they expected to find." She'd learned that the hard way, three years ago, in a cellar in Whitechapel where the evidence had pointed everywhere and nowhere and DS Morris had walked into the dark and never walked out. The official report called it a gas leak. Quinn had stopped believing official reports somewhere in the months after. "A man doesn't arrive without footprints, Reyes. Not unless he didn't arrive on his feet." She stood and circled the body a second time, slower. The sweet rot in the air thickened near his head, and she found it: a fine residue dusting the concrete in a ring around the corpse, pale grey, almost silver, catching the lamplight when she angled her torch low. Not dust. Not ash. It lay in a deliberate band, unbroken, encircling the dead man like a chalk line drawn by something that had never held chalk. "Did anyone log this?" Reyes leaned in. "Log what? I don't—" His voice caught. "Is that... I don't see anything, detective." She looked at him. He wasn't lying. His eyes passed over the ring of residue and slid off it, the way a hand slides off wet glass. She'd seen that before too. People who couldn't hold a thing in their sight because some part of them refused. "Stand back," she said, quieter now. He stood back. Quinn pulled a glove from her pocket and touched two fingers to the residue. Cold bit through the latex, a cold with no business in a sealed underground room. The grey clung to her fingertips and, for a heartbeat, the lamplight guttered — every bulb dimming at once, as though something had drawn a long breath and pulled the brightness into itself. The lamps steadied. Reyes hadn't noticed. He was checking his clipboard again, muttering about the bolt cutters. Vance hadn't died of a heart attack. His heart had been stopped, the way you'd pinch out a candle, and then he'd been set down here in a circle no ordinary eye would hold — set down on a platform that no living foot had crossed. Quinn straightened, the cold still aching in her fingers, and stared at the dead man's untroubled face. "Reyes," she said. "Pull the records on this station. Every closure, every survey, every reason the Council's never reopened it." She turned toward the tunnel mouth, where the dark waited patient as a held breath. "And find out where Edmund Vance was the night before he turned up clean as a corpse in a dirty grave."
created_at"2026-05-31T11:38:37.984Z" 5/31/2026, 11:38:37 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3299
moderation_latency(null)
generation_time41214
tokens_prompt1149
tokens_completion1724
native_tokens_prompt1595
native_tokens_completion2387
native_tokens_completion_images(null)
native_tokens_reasoning82
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"
usage0.06765
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provider_responses
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is_byokfalse
latency968
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
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request_id"req-1780227517-V1d3u1Ik3YGqKf2Nybfh"
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api_type"completions"
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Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags15
adverbTagCount1
adverbTags
0"Quinn knelt again [again]"
dialogueSentences35
tagDensity0.429
leniency0.857
rawRatio0.067
effectiveRatio0.057
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1103
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)
90.93% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1103
totalAiIsms2
found
0
word"silence"
count1
1
word"grave"
count1
highlights
0"silence"
1"grave"
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
narrationSentences70
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount0
narrationSentences70
filterMatches(empty)
hedgeMatches(empty)
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences90
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen55
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1108
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions8
unquotedAttributions0
matches(empty)
91.94% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions25
wordCount775
uniqueNames10
maxNameDensity1.16
worstName"Quinn"
maxWindowNameDensity2
worstWindowName"Quinn"
discoveredNames
Harlow1
Quinn9
Northern1
Line1
Blitz1
Reyes7
Tube1
Vance2
Whitechapel1
Morris1
persons
0"Harlow"
1"Quinn"
2"Line"
3"Blitz"
4"Reyes"
5"Vance"
6"Morris"
places
0"Whitechapel"
globalScore0.919
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences40
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1108
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences90
matches
0"learned that the"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs35
mean31.66
std26.99
cv0.853
sampleLengths
066
113
230
328
46
577
69
733
845
970
105
1113
1236
139
1416
154
168
1730
184
1987
2010
211
2266
2316
2475
2576
264
2717
2847
296
303
3162
3217
3363
3456
90.23% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences70
matches
0"were folded"
1"were shut"
2"been stopped"
44.96% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount3
totalVerbs129
matches
0"was only waiting"
1"wasn't lying"
2"was checking"
0.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount5
semicolonCount0
flaggedSentences5
totalSentences90
ratio0.056
matches
0"Folded — not flung, not splayed."
1"The shoes too — polished leather without so much as a scuff, here in a place where each step she'd taken had ground decades of dust beneath her boots."
2"The dust lay thick and undisturbed but for one set of prints — her own, and the cluster of forensics treads near the body."
3"The grey clung to her fingertips and, for a heartbeat, the lamplight guttered — every bulb dimming at once, as though something had drawn a long breath and pulled the brightness into itself."
4"His heart had been stopped, the way you'd pinch out a candle, and then he'd been set down here in a circle no ordinary eye would hold — set down on a platform that no living foot had crossed."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount771
adjectiveStacks0
stackExamples(empty)
adverbCount20
adverbRatio0.02594033722438392
lyAdverbCount1
lyAdverbRatio0.0012970168612191958
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences90
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences90
mean12.31
std10.6
cv0.861
sampleLengths
014
120
232
313
418
512
67
715
86
96
103
1111
1224
131
142
1519
167
176
184
199
2018
2115
2222
237
2410
256
2655
2715
285
2913
302
3115
324
332
3413
359
362
3714
384
392
405
411
4230
434
446
4516
462
4710
484
4929
82.22% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats6
diversityRatio0.5333333333333333
totalSentences90
uniqueOpeners48
57.47% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount1
totalSentences58
matches
0"Somewhere below, generator lamps threw"
ratio0.017
82.07% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount20
totalSentences58
matches
0"She didn't answer."
1"She walked the length of"
2"His arms were folded across"
3"His eyes were shut, his"
4"She let her torch travel"
5"She drew a pen from"
6"She swept her torch in"
7"She'd learned that the hard"
8"She stood and circled the"
9"It lay in a deliberate"
10"His voice caught"
11"She looked at him."
12"He wasn't lying."
13"His eyes passed over the"
14"She'd seen that before too."
15"she said, quieter now"
16"He stood back."
17"He was checking his clipboard"
18"His heart had been stopped,"
19"She turned toward the tunnel"
ratio0.345
11.72% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount52
totalSentences58
matches
0"The stairwell descended past the"
1"Detective Harlow Quinn took the"
2"The file had said nothing"
3"DC Reyes stood at the"
4"Quinn stepped onto the platform"
5"The air tasted of rust"
6"She didn't answer."
7"She walked the length of"
8"The lamps had been set"
9"His arms were folded across"
10"Someone had arranged him."
11"Quinn crouched, careful not to"
12"Reyes flipped a page"
13"Quinn tilted her head"
14"The dead man's face wore"
15"His eyes were shut, his"
16"Reyes spoke with the easy"
17"She let her torch travel"
18"The deduction was tidy."
19"The clipboard lowered an inch."
ratio0.897
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences58
matches(empty)
ratio0
68.97% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences29
technicalSentenceCount3
matches
0"A man who'd climbed through a maintenance hatch and descended a hundred ruined steps did not arrive with mirror-shined shoes."
1"It lay in a deliberate band, unbroken, encircling the dead man like a chalk line drawn by something that had never held chalk."
2"The grey clung to her fingertips and, for a heartbeat, the lamplight guttered — every bulb dimming at once, as though something had drawn a long breath and pull…"
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags15
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags5
fancyCount1
fancyTags
0"Reyes spoke (speak)"
dialogueSentences35
tagDensity0.143
leniency0.286
rawRatio0.2
effectiveRatio0.057
84.0169%