Run: 2026-03-11-01KKFDN9PQQ07JW8YSW56WHHGZ

Run Details

Duration:
17.6s
Cost:
$0.000000
Provider:
Stealth

Evaluation summary

Score Evaluator
Details Link
72.16% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Detective Marlowe pressed his palms against the frosted window, watching the snow settle like ash across the courtyard below. The body slumped in the armchair looked almost peaceful, except for the dark bloom spreading silently across the white shirt. She had been dead for hours, they said, yet the house remained impossibly cold, as though winter itself had entered. A single glass of whiskey sat untouched on the table beside her, positioned precisely where her right hand might have reached. Marlowe circled slowly, noting the absence of forced entry, the carefully drawn curtains, and the telephone off its hook. Everything suggested premeditation, yet nothing suggested struggle, as though the victim had welcomed whoever arrived at her door tonight. The front door had been locked from inside, he realized, which meant the killer was either still here or nowhere. He knelt beside her and noticed something clutched in her left palm—a folded note, small, written in trembling red ink. The grandfather clock in the hallway struck midnight, its chimes reverberating through empty rooms like a heartbeat refusing to stop. Upstairs, a floorboard groaned under sudden weight, though Marlowe had checked every closet, every crawlspace, every shadow twenty minutes ago. He drew his revolver and pressed against the staircase wall, listening as footsteps retreated toward the attic door, deliberate and unhurried. The lights flickered once and died, plunging the house into darkness so complete that even his own breathing felt intrusive and loud. From somewhere above, a woman's voice whispered his name—not hers, not the victim's, but someone he had buried years before.
created_at"2026-03-11T21:43:17.476Z" 3/11/2026, 9:43:17 PM
model"openrouter/hunter-alpha"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency834
moderation_latency(null)
generation_time17555
tokens_prompt46
tokens_completion1115
native_tokens_prompt2083
native_tokens_completion924
native_tokens_completion_images(null)
native_tokens_reasoning696
native_tokens_cached2048
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
router(null)
provider_responses(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773265397-XL6YCYROaUtIuGOlFIiS"
upstream_id"gen-1773265397-XL6YCYROaUtIuGOlFIiS"
total_cost0
cache_discount(null)
upstream_inference_cost0
provider_name"Stealth"

Evaluation details

Result Evaluator Details Meta Data
72.16% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
019
120
220
321
419
519
620
721
820
920
1021
1122
1221