Run: 2026-02-17-01KHMMH4BCP52MJ93SWBXCJYSZ

Run Details

Duration:
2m 55s
Cost:
$0.016233
Provider:
Cohere

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 abandoned Camden Town Tube station loomed large, its brick archways and platform edges worn smooth by decades of disuse. Detective Harlow Quinn stepped through the damp underbelly of the city's underworld, her boots echoing on the cold tiles. Her sharp eyes scanned the gloom, searching for any sign of the alleged crime scene. The air hung heavy with the scent of mold and damp earth. A faint blue-white light glowed in the distance, drawing Quinn toward a makeshift camp. As she approached, the source revealed itself: an ancient arcane lamp, its luminescence casting eerie shadows on the grimy walls. DS Ash, her colleague, crouched beside an open rucksack, sorting through an array of peculiar items. "Took you long enough, Detective. You're just in time for the magic show." Quinn's eyes narrowed at the mundane name tag on a stack of clothes—Janice O'Brien, age 26, according to the missing persons report. A local neophyte witch gone missing three days ago. "Ash, this is a person, not a mere magic trick." Ash shrugged. "Look at her gear: bone tokens, enchanted dust, and an apprentice-level grimoire. O'Brien wanted to make a name for herself at the Veil Market—disappear into the supernatural underworld and come back a legend." Quinn approached the evidence, taking in the well-organized rucksack, with its neatly folded cloaks and precision-stacked tomes. She crouched beside Ash, carefully picking up a small brass compass, its needle quivering. "This compass is attuned to rifts and portals. O'Brien sought the Veil Market, sure, but her disappearance wasn't a disappearance at all. She found it." "Yeah? How's that?" Ash challenged, his voice tinged with skepticism. Quinn held up the Veil Compass. "Look at this patina. Fresh tarnish. O'Brien used the compass recently. The Market moves every full moon. That was three nights ago." She stood, her eyes locked on Ash's. "This isn't the work of a runaway thrill seeker. Something happened to Janice O'Brien." Ash's expression betrayed a hint of uncertainty. "If you say so, Detective. But running off to a black market is risky enough to explain her absence." Quinn wasn't swayed by Ash's interpretation. She knew better than most that the Veil Market was as much about trapping unsuspecting customers as it was about commerce. Particularly for those seeking a shortcut to power. "She was an apprentice with connections. Someone would've vouched for her. And she's not the first neophyte to go missing." "True, but no one's ever found a trace of these so-called missing witches." "Not a trace we could identify," Quinn countered. "But you and I both know that doesn't mean they haven't left evidence. Evidence we simply lack the expertise to recognize." "Ah, yes, the occult researchers will save the day," Ash quipped, securing the rucksack and standing with a grin. "I'll get the boys to dust for more remnants of magic and see if we turn up something unusual." Quinn checked her watch, a worn leather-bound timepiece. "Good. And contact the university, tell them I want Eva Kowalski down here pronto. We need eyes that know what to look for." ******** A brisk wind greeted Quinn aboveground, numbing the still-warm morning air with the promise of winter. She stood in the shadow of the Thames Link bridge, overlooking the maze of Camden's warehouses and markets, sipping bitter tea from a thermos. Eva Kowalski arrived on the hour, predictably out of breath, her curly red hair escaping its restraints and her round glasses slightly askew. "Detective, you wanted me to see something? Is this about our missing persons cases?" Quinn nodded, glad for Eva's assistance in decoding the market's secrets. "We found Apprentice O'Brien's things in an abandoned Tube station beneath Camden. Everything points to her successfully reaching the Veil Market, but something went wrong." Eva's expression bloomed with curiosity and no small amount of excitement. "A station? Which one?" "It's a decoy, the Market isn't actually in the location of its name anymore. But it's close. Location's kept off the public records. DS Ash is handling the preservation for now." "Oh, yes... the police detective famous for his skepticism on the Occult Desk," Eva mumbled. Quinn smiled slightly, amused by Eva's muted disdain. "And someone to attend you while you work." "Of course." Eva fidgeted, tucking her hair nervously behind her ear. "Right, show me what you've got." They took the stairs down to the platform, where a police barrier cordoned off the area. Ash strolled over, his face brightening at the sight of Eva. "Eva! You made it. I've got a fresh pot of tea brewing in the van. Nothing fancy, I'm afraid, but it beats the sludge they give us at the Met." Eva's eyes lit up. "You're an angel, Ash. I'm parched and starving." As they made their way to the police van, Quinn assessed the banter. Eva's gift for researching the supernatural complemented Ash's procedural knowledge in a way she couldn't deny was helpful. Still, Quinn preferred methodical action over jovial camaraderie, especially during a case this sensitive. Over tea and biscuits, Quinn filled Eva in on the rest of the evidence, explaining what little they knew about the Veil Market's elusive locations and the items in the witch's possession. Eva listened intently, eyes lighting up as she pieced together the supernatural elements. "Janice is—was—trying to gain entry to the Market. The shadow compass is key. She used it to locate a supernatural conduit, which led her right to their doorstep." Quinn nodded, encouraging her to continue. "But something went wrong. Her gear is intact, and she was there—this compass proves it. Yet there's no sign of her. No body. It's as if she vanished into thin air." Eva's eyes grew wide with realization. "The Market is not just a place to buy enchantments; it's a hub for swapping bodies and souls." A chill ran down Quinn's spine. "Soul swapping? A transaction that sinister would leave a trace. We just need the means to find it." Eva smiled, a scholar about to share a prized discovery. "We have the tools."
created_at"2026-02-17T01:51:05.196179+00:00" 2/17/2026, 1:51:05 AM
model"cohere/command-r-plus-08-2024"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency371
moderation_latency289
generation_time175151
tokens_prompt923
tokens_completion1578
native_tokens_prompt857
native_tokens_completion1409
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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"stop"
usage0.0162325
router(null)
provider_responses
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id"deae2c07-ca75-47ca-8e2e-2c3a61974cb4"
status200
is_byokfalse
latency371
endpoint_id"cd63714a-d459-4806-bdf2-0dfea4f6614c"
provider_name"Cohere"
model_permaslug"cohere/command-r-plus-08-2024"
api_type"completions"
id"gen-1771292889-yqs4czROQGGKaZ0biANB"
upstream_id"deae2c07-ca75-47ca-8e2e-2c3a61974cb4"
total_cost0.0162325
cache_discount(null)
upstream_inference_cost0
provider_name"Cohere"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags3
adverbTagCount0
adverbTags(empty)
60.7073% AI-ism adverb frequency
Target: <1% AI-ism adverbs (57 tracked)
wordCount1018
totalAiIsmAdverbs4
found
0
adverb"carefully"
count1
1
adverb"nervously"
count1
2
adverb"slightly"
count2
highlights
0"carefully"
1"nervously"
2"slightly"
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)
50.8841% AI-ism word frequency
Target: <1% AI-ism words (140 tracked)
wordCount1018
totalAiIsms5
found
0
word"tinged"
count1
1
word"sinister"
count1
2
word"loomed"
count1
3
word"methodical"
count1
4
word"echoing"
count1
highlights
0"tinged"
1"sinister"
2"loomed"
3"methodical"
4"echoing"
100.0000% Cliche density
Target: ≤1 cliche(s) per 800-word window
totalCliches1
maxInWindow1
found
0
label"eyes widened/narrowed"
count1
highlights
0"eyes narrowed"
100.0000% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences43
matches(empty)
100.0000% Filter word density
Target: ≤12% sentences with filter/hedge words
filterCount1
hedgeCount0
narrationSentences43
filterMatches
0"watch"
hedgeMatches(empty)
100.0000% Overuse of "that" (subordinate clause padding)
Target: ≤10% sentences with "that" clauses
thatCount1
totalSentences66
matches
0"that?\" Ash"
100.0000% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs32
mean31.44
std16.36
cv0.52
sampleLengths
066
134
229
341
435
556
610
749
826
955
1013
1129
1238
1331
141
1540
1637
1736
1815
1931
2015
2116
2217
2357
2412
2545
2632
2741
286
2955
3024
3114
100.0000% Passive voice overuse
Target: ≤5% passive sentences
passiveCount0
totalSentences43
matches(empty)
100.0000% Past progressive (was/were + -ing) overuse
Target: ≤10% past progressive verbs
pastProgressiveCount0
totalVerbs87
matches(empty)
87.1060% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount522
adjectiveStacks2
stackExamples
0"faint blue-white light"
1"worn leather-bound timepiece."
adverbCount11
adverbRatio0.0210727969348659
lyAdverbCount11
lyAdverbRatio0.0210727969348659
100.0000% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences66
echoCount0
echoWords(empty)
100.0000% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences66
mean15.24
std8.11
cv0.532
sampleLengths
020
119
215
312
414
520
616
713
822
99
1010
112
1233
1317
1414
1525
1610
176
1829
1914
207
2119
226
2321
248
2520
2613
278
2821
2919
3019
318
3223
331
3416
3524
3623
3714
3811
3925
4011
414
4231
4315
448
458
4611
476
4816
4911
84.1026% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats2
diversityRatio0.5230769230769231
totalSentences65
uniqueOpeners34
0.0000% Dialogue tag variety (said vs. fancy)
Target: ≤30% fancy dialogue tags
totalTags3
fancyCount3
fancyTags
0"Quinn countered (counter)"
1"Ash quipped, securing the rucksack and standing with a grin (quip, secure stand)"
2"Eva mumbled (mumble)"
87.2235%