Run: 2026-05-29-01KSSJR5ZT65D17P66N72WAHR0

Run Details

Duration:
41.8s
Cost:
$0.063700
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
Rain slicked the cobblestones outside the abandoned Tube station, and Quinn ducked beneath the police tape without breaking stride. The constable at the entrance started to speak. She held up her badge and kept walking, down a staircase that hadn't seen public use since the Blitz. The air thickened with each step. Dust, mould, and underneath it something she couldn't name—sweet and metallic, like copper coins left in the sun. "You took your time." DS Ellroy waited at the bottom, torch in hand, sweeping its beam across the platform. Tiles the colour of old teeth. A body sprawled near the edge where the rails should have run, except there were no rails. No tracks at all. Just a smooth stone floor that swallowed the light. "Traffic on the Camden Road," Quinn said. "What've we got?" "Male, mid-thirties. No ID, no phone, no wallet." Ellroy crouched beside the corpse. "Looks like he fell. Cracked his skull on the platform edge. Forensics says blunt trauma, consistent with the height." She knelt opposite him. The dead man lay on his back, one arm flung above his head, the other crossed over his chest. His eyes stared at the vaulted ceiling. Quinn followed his gaze upward, then back down to the wound at his temple. "Consistent with the height," she repeated. "What height?" "He came down those stairs. Tripped, fell forward, hit his head." "He's on his back." Ellroy paused. "People roll. After they fall." "Onto their back, with one arm raised and the other folded like he's lying in a coffin." She pulled a pair of gloves from her coat pocket and snapped them on. "Show me the blood." The torch beam tracked the platform edge. A dark smear marked the stone where his head rested, the pool spreading in a neat oval beneath his skull. "There," Ellroy said. "Matches the wound." Quinn leaned closer. The blood had pooled, yes, but the edges were wrong. No spatter. No arc thrown across the tiles from the impact of a falling head. Just that tidy, contained spill, as if someone had poured it from a cup. "A man falls and cracks his skull, there's cast-off," she said. "Velocity. Blood goes where the head was moving. This—" She gestured at the oval. "This is what you get when a body's already down and bleeds out slow." "So he fell, then bled." "Then there'd be smearing where he landed and shifted. There isn't." She pressed two fingers near the wound, not touching it. "And look at the colour. This blood's too dark. Too thick." Ellroy shifted his weight, and the torch beam jittered. "Quinn, the photographer's already been. SOCO's signed off on accidental. We close this, we go home." "You want to go home." "I want to not be standing in a derelict station at two in the morning chasing ghosts. Yes." He rubbed the back of his neck. "It's a dead vagrant in a place he shouldn't have been. Happens." Quinn stood. She walked the length of the platform, slow, her torch low and angled across the floor so the light caught every imperfection. Dust lay everywhere—decades of it, undisturbed. Except. "Ellroy. Come here." He came. She pointed at the floor with her beam. "Footprints," she said. "Yours. Mine. The constable's by the stairs. SOCO's, here and here." She moved the light in a slow sweep. "Now tell me. Where are his?" The dust around the body was clean. Pristine. No trail leading from the staircase to where the man lay. No scuff of a stumble, no drag of a falling body. He simply lay there, as though he'd been set down from above, in a place no living foot had crossed in eighty years. Ellroy crouched again, frowning now. "Maybe the draught. From the tunnels." "There's no draught. The air down here hasn't moved in decades. Smell it." She watched his face. "He didn't walk here. And he didn't fall here either." "Then how—" "That's the question." She crouched once more, and this time she looked properly at the man's hands. The raised one, palm open to the ceiling. The fingers were curled inward, not slack the way the dead went slack, but bent, deliberate, like he'd been holding something the moment he died. She bent the torch close. In the centre of his palm, pressed into the skin, was a circular impression. A ring of small indentations around a smooth depression at its heart. "He was holding something round," she said. "Brass, maybe. He gripped it hard enough to leave a mark." "Could be anything. A coin. A bottle cap." "With raised edges, in a pattern." She traced the marks in the air above the dead palm. Etchings. A circle of symbols around a face. The shape of it pulled at a memory she didn't want—a memory of Morris, three years gone, and a case that had no clean ending. She pushed it back. "Where's the round object now, Ellroy? If he was holding it tight enough to brand his own hand, where is it?" Ellroy said nothing. "Whoever moved him took it." Quinn rose, her knees protesting. "This isn't an accident. Someone killed this man somewhere else, carried him down here, arranged him, poured his blood beside his head to sell us the fall, and walked out without leaving a single footprint in eighty years of dust." She turned in a slow circle, the torch sweeping the impossible clean floor. "I'd like to know how a person manages that." "You're saying it's a setup." "I'm saying the evidence doesn't add up. A fall leaves chaos. This—" she gestured at the body, the oval of blood, the folded arm "—this is composition. Someone wanted it found, and wanted us to file it and forget it." Ellroy stood and clicked off his torch, then thought better of it and clicked it on again. "Quinn. The brass said keep it simple. If you write it up otherwise, you'll be back in front of them explaining why." "I've explained worse." She crouched a final time and looked at the dead man's open eyes. The reflection of her torch sat small and hard in each pupil. "Photograph the palm. The full hand, macro lens. And the floor—every inch around him. I want the lack of footprints on record before anyone tramples it." "You're chasing a ghost." She thought of Morris again, of a stairwell and a smell like copper in the sun, and her jaw tightened. "Maybe," she said, and reached for her notebook. "But this one left a mark."
created_at"2026-05-29T09:58:50.114Z" 5/29/2026, 9:58:50 AM
model"anthropic/claude-4.8-opus-20260528"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2976
moderation_latency(null)
generation_time41799
tokens_prompt1149
tokens_completion1657
native_tokens_prompt1595
native_tokens_completion2229
native_tokens_completion_images(null)
native_tokens_reasoning40
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"
usage0.0637
router(null)
provider_responses
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endpoint_id"b0d3beaa-5ff7-4666-a749-b1bb2b14c916"
id"msg_0146FuJfYR134ymyobsDrW5y"
is_byokfalse
latency1282
model_permaslug"anthropic/claude-4.8-opus-20260528"
provider_name"Anthropic"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.16.0; linux; x64))"
http_referer(null)
request_id"req-1780048730-5G7m4cQ16ftGyEIfkUT8"
session_id(null)
api_type"completions"
id"gen-1780048730-XkSNiPbfV6JXGvBQVQTI"
upstream_id"msg_0146FuJfYR134ymyobsDrW5y"
total_cost0.0637
cache_discount(null)
upstream_inference_cost0
provider_name"Anthropic"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags20
adverbTagCount1
adverbTags
0"She crouched once [once]"
dialogueSentences49
tagDensity0.408
leniency0.816
rawRatio0.05
effectiveRatio0.041
100.00% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1097
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)
86.33% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1097
totalAiIsms3
found
0
word"weight"
count1
1
word"pristine"
count1
2
word"traced"
count1
highlights
0"weight"
1"pristine"
2"traced"
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
narrationSentences68
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount1
narrationSentences68
filterMatches(empty)
hedgeMatches
0"started to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences97
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen53
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1092
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions16
unquotedAttributions0
matches(empty)
88.65% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions19
wordCount652
uniqueNames6
maxNameDensity1.23
worstName"Ellroy"
maxWindowNameDensity2
worstWindowName"Quinn"
discoveredNames
Tube1
Quinn6
Blitz1
Ellroy8
Etchings1
Morris2
persons
0"Quinn"
1"Ellroy"
2"Morris"
places(empty)
globalScore0.887
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences44
glossingSentenceCount0
matches(empty)
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.916
wordCount1092
matches
0"not slack the way the dead went slack, but bent, deliberate, like he'd been holding something the momen"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount0
totalSentences97
matches(empty)
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs42
mean26
std21
cv0.808
sampleLengths
046
124
24
351
410
532
644
78
811
94
107
1135
1227
136
1442
1539
165
1732
1825
195
2037
2131
223
2310
2428
2553
2611
2727
282
2981
3018
318
3275
333
3472
355
3640
3739
3854
394
4020
4114
100.00% Passive voice overuse
Target: ≤2% passive sentences
passiveCount1
totalSentences68
matches
0"were curled"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount0
totalVerbs109
matches(empty)
25.04% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount4
semicolonCount0
flaggedSentences4
totalSentences97
ratio0.041
matches
0"Dust, mould, and underneath it something she couldn't name—sweet and metallic, like copper coins left in the sun."
1"Dust lay everywhere—decades of it, undisturbed."
2"The shape of it pulled at a memory she didn't want—a memory of Morris, three years gone, and a case that had no clean ending."
3"\"I'm saying the evidence doesn't add up. A fall leaves chaos. This—\" she gestured at the body, the oval of blood, the folded arm \"—this is composition. Someone wanted it found, and wanted us to file it and forget it.\""
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount639
adjectiveStacks0
stackExamples(empty)
adverbCount12
adverbRatio0.018779342723004695
lyAdverbCount2
lyAdverbRatio0.003129890453834116
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences97
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences97
mean11.26
std8.71
cv0.773
sampleLengths
019
18
219
36
418
54
615
76
817
94
109
117
123
1313
1419
154
1619
177
1814
196
202
2111
224
232
245
2531
264
277
2820
293
303
313
3210
332
3413
3514
3611
3714
3814
395
4021
4111
429
4316
445
4525
4612
472
4822
496
76.63% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats4
diversityRatio0.4845360824742268
totalSentences97
uniqueOpeners47
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount2
totalSentences55
matches
0"Just a smooth stone floor"
1"Just that tidy, contained spill,"
ratio0.036
67.27% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount21
totalSentences55
matches
0"She held up her badge"
1"She knelt opposite him."
2"His eyes stared at the"
3"She pulled a pair of"
4"She gestured at the oval"
5"She pressed two fingers near"
6"He rubbed the back of"
7"She walked the length of"
8"She pointed at the floor"
9"She moved the light in"
10"He simply lay there, as"
11"She watched his face"
12"She crouched once more, and"
13"She bent the torch close."
14"She traced the marks in"
15"She pushed it back."
16"She turned in a slow"
17"she gestured at the body,"
18"She crouched a final time"
19"She thought of Morris again,"
ratio0.382
23.64% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount48
totalSentences55
matches
0"Rain slicked the cobblestones outside"
1"The constable at the entrance"
2"She held up her badge"
3"The air thickened with each"
4"Dust, mould, and underneath it"
5"DS Ellroy waited at the"
6"Tiles the colour of old"
7"A body sprawled near the"
8"Ellroy crouched beside the corpse"
9"She knelt opposite him."
10"The dead man lay on"
11"His eyes stared at the"
12"Quinn followed his gaze upward,"
13"She pulled a pair of"
14"The torch beam tracked the"
15"A dark smear marked the"
16"Quinn leaned closer."
17"The blood had pooled, yes,"
18"She gestured at the oval"
19"She pressed two fingers near"
ratio0.873
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences55
matches(empty)
ratio0
100.00% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences22
technicalSentenceCount1
matches
0"The shape of it pulled at a memory she didn't want—a memory of Morris, three years gone, and a case that had no clean ending."
50.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags20
uselessAdditionCount3
matches
0"She pressed, not touching it"
1"She turned, the torch sweeping the impossible clean floor"
2"she gestured, the oval of blood, the folded arm"
88.78% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags9
fancyCount3
fancyTags
0"she repeated (repeat)"
1"She pressed (press)"
2"Quinn rose her knees protesting (protest)"
dialogueSentences49
tagDensity0.184
leniency0.367
rawRatio0.333
effectiveRatio0.122
86.8777%