Run: 2026-02-17-01KHMQMPZZYKY3W40EJXBZNG45

Run Details

Duration:
10.2s
Cost:
$0.000631
Provider:
OpenAI

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="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> 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.

Model response

AI
The metallic hum of the underground station echoed faintly through the shadowed corridors, a ghostly drone that seemed to breathe with the station’s hidden heartbeat. Detective Harlow Quinn pushed through a sealed metal door, the faint scrape of her worn leather boots against the cracked tile floor echoing her deliberate effort to keep her presence low. She flicked her gaze around the dimly lit space — an abandoned Tube station beneath Camden, now disturbingly out of place in the quiet dawn. The air felt different here—thicker somehow, tinged with a strange electric pulse that prickled at her skin even beneath the cold weight of her coat. Her hand hovered near her side, close to her worn leather watch as if it might counteract the odd sensation. The scent was off, too—a faint coppery tang mixed with something foul, like spoiled herbs left to ferment in a forgotten cellar. In the middle of the deserted platform, a figure bent over something on the ground. Harlow’s sharp eyes identified it as her colleague, Detective Marcus Lane, a grumpy veteran with a nose for trouble. His lanky frame moved with eagerness, flashlight in one hand, a small plastic evidence bag in the other. “Lane,” she called softly, voice echoing in the cavernous space. She paused just behind him, arms crossed, watching him intently. “What have you got?” He looked up, blinking around the gloom. “You’re late. Already started workin’ the scene. Finds don’t quite add up, Quinn. Not like a typical murder.” Harlow stepped forward, her gaze narrowing as her eyes adjusted to the gloom. The victim lay sprawled on the cracked tiles—an adult male, roughly in his late forties, face frozen in a look of terror. Blood pooled beneath his head, dark and thick, spreading in a slow, uneven radius. But the odd thing was the absence of typical trauma. No bite marks, no gunshot, no stab wounds. Just a fresh, unnatural bruise spreading across his face, like a dark cloud had settled there, cold and unyielding. “You see what I see?” Lane half-rose, tilting his head. “Looks like he was asleep, maybe fainted—” “No,” Harlow interrupted, her brow furrowing. “This ain’t a fainting spell. Look at the placement of the bruise. Not hitting his face—more like something pressed against him. From the inside, maybe?” Lane shrugged, but she caught the flicker of uncertainty behind his eyes. She knelt, gloved fingers brushing the man's coat, scanning for clues. Her mind sifted through recent reports, crime statistics, her gut telling her something was off. Evidence usually told a story—often straightforward, sometimes layered with lies. Not this. Her gaze flicked to the edge of the platform, where a faint white dusting clung to the cracked concrete. Dust that shouldn’t be here, yet fit into no normal scene. Metaphysical perhaps? A residue? She reached into her coat pocket, pulling out the Veil Compass they’d acquired from the market—a tiny brass tool, etched with protective sigils, its needle trembling slightly as she wielded it above the body. The compass’s needle spun, jittering violently toward a corner. “Over here,” she said, voice barely a whisper. Lane followed, his brow creased. As she moved toward the faintly illuminated corner, the hairs on her arms prickled—an instinct that had served her during darker cases, and certainly more than once since that unexplainable incident with her partner. A supernatural energy hummed just beneath the surface, threatening to breach the mundane. There was something strange about this scene. The victim’s coat was oddly clean around the collar, no sign of struggle or dirt—yet evidence suggested a violent event. Her eyes flicked to the dust again—what if this dust was recent? Or... not dust at all? She crouched, scanning the floor carefully, noting a faint outline on the tiles, almost as if something had been pressed into them, then shifted away before it could leave a clear imprint. “What are you looking for?” Lane asked, voice softly skeptical. “An angle,” Harlow said. She drew her gaze across the scene, slowly, thinking. Her eye caught a faint glint near her feet—a small, near-invisible crack in the ceramic along the edge of the platform. As if something had been pressed or embedded there. She reached out, fingers tentative. The crack widened just enough for her to see a fragment hidden inside: a tiny piece of blackened metal, almost charred. It looked out of place against the surrounding dust, an artifact buried just beneath the surface. “Here,” she said softly, pulling the fragment free. Lane, now leaning in, muttered, “Looks like scrap from somethin’ burnt or corroded. Doesn’t match the scene. No sign of any fire, no burn marks on the victim.” Harlow shook her head slowly. “No. But what if—” Her voice faltered. “There’s nothing usual about this. It’s not just a murder. It’s something else.” Lane frowned, glancing around. “You think someone staged this?” “I think the whole scene’s been tampered with. The bruise, the dust, the fragment—none of it quite fits. This place isn’t just abandoned; it's been *changed.*” She pulled out her phone, dialing a number she knew by heart. When the line picked up, she kept her voice steady. “Quinn here. I need a scan for supernatural residue — the kind that leaves traces on metal or earth. Something odd about this scene, and I don’t think it’s human.” A tense pause, then a faint crackle of static. “Rely on the compass if you can. It’ll guide you to what’s hidden.” She lowered the phone and turned her gaze back to the scene. Something unseen lurked just beyond perception, fracturing the boundaries of what she knew. Her eyes flicked once more to the dust, the fragment, and the faint, trembling aim of the compass needle. Behind her, Lane hesitated, then softly questioned, “You think it’s supernatural?” Harlow kicked at a stray piece of debris, her mind racing. “I don’t know yet. But whatever it is, it’s not supposed to be here.” She stepped back, eyes fixed on the shadows stretching from the platform’s edge, feeling the weight of the unseen lurking just beneath the surface—and knowing, deep down, that she was closer than ever to something far darker than she’d ever faced.
created_at"2026-02-17T02:42:43.362274+00:00" 2/17/2026, 2:42:43 AM
model"openai/gpt-4.1-nano-2025-04-14"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency384
moderation_latency(null)
generation_time9907
tokens_prompt923
tokens_completion1658
native_tokens_prompt836
native_tokens_completion1369
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0006312
router(null)
provider_responses
0
id"resp_068c20d10c130d6c016993d598aa648197a80e4202b04c447b"
status200
is_byokfalse
latency142
endpoint_id"9251cee5-5503-4be9-9439-7ae21ff062a3"
provider_name"OpenAI"
model_permaslug"openai/gpt-4.1-nano-2025-04-14"
api_type"completions"
id"gen-1771296152-NtsO7x2kXLrAQY0Rbs9p"
upstream_id"resp_068c20d10c130d6c016993d598aa648197a80e4202b04c447b"
total_cost0.0006312
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
0.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags8
adverbTagCount4
adverbTags
0"she called softly, voice echoing in the cavernous space [softly]"
1"she said, voice barely a whisper [barely]"
2"she said softly, pulling the fragment free [softly]"
3"Behind her, Lane hesitated, then softly questioned, [then softly]"
23.3716% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1044
totalAiIsmAdverbs8
found
0
adverb"carefully"
count1
1
adverb"slightly"
count1
2
adverb"slowly"
count2
3
adverb"softly"
count4
highlights
0"carefully"
1"slightly"
2"slowly"
3"softly"
80.0000% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found
0"Marcus"
100.0000% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
0.0000% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1044
totalAiIsms14
found
0
word"tinged"
count1
1
word"flicker"
count1
2
word"flicked"
count4
3
word"glint"
count1
4
word"furrowing"
count1
5
word"weight"
count2
6
word"echoed"
count1
7
word"echoing"
count2
8
word"etched"
count1
highlights
0"tinged"
1"flicker"
2"flicked"
3"glint"
4"furrowing"
5"weight"
6"echoed"
7"echoing"
8"etched"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences63
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount1
hedgeCount1
narrationSentences63
filterMatches
0"watch"
hedgeMatches
0"seemed to"
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount0
totalSentences73
matches(empty)
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs29
mean35.59
std19.66
cv0.553
sampleLengths
081
167
252
324
425
586
617
731
850
934
1043
1113
1247
1344
1432
1510
1643
1742
188
1928
2025
219
2226
2352
2422
2544
2611
2725
2841
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount2
totalSentences63
matches
0"been pressed"
1"been pressed"
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount0
totalVerbs136
matches(empty)
80.7837% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount840
adjectiveStacks0
stackExamples(empty)
adverbCount49
adverbRatio0.058333333333333334
lyAdverbCount20
lyAdverbRatio0.023809523809523808
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences73
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences73
mean14.14
std8.77
cv0.621
sampleLengths
025
131
225
325
420
522
615
719
818
910
1010
114
127
1318
1413
1522
1614
1710
188
1919
2010
217
226
2325
2412
2511
2615
2710
282
2919
3011
312
322
3334
349
358
365
3734
3813
397
4020
4112
421
434
4432
4510
464
479
4821
499
79.9087% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats0
diversityRatio0.4794520547945205
totalSentences73
uniqueOpeners35
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags8
fancyCount6
fancyTags
0"she called softly, voice echoing in the cavernous space (call softly, voice echoing)"
1"Harlow interrupted, her brow furrowing (interrupt, furrow)"
2"she said, voice barely a whisper (say, voice barely)"
3"she said softly, pulling the fragment free (say softly, pull)"
4"Lane, now leaning in, muttered, (lean in, mutter)"
5"Behind her, Lane hesitated, then softly questioned, (hesitate, softly question)"
74.3567%