Run: 2026-03-12-01KKFQXCVQYS2NGMCRW3DD7E1Z

Run Details

Duration:
9.7s
Cost:
$0.000000
Provider:
Stealth

Evaluation summary

Score Evaluator
Details Link
25.14% 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
Rain lashed against the gothic spires of Blackwood Manor, each drop a cold accusation against the ancient stone. Inside the grand library, a body lay sprawled before the fireplace, a pool of crimson expanding slowly. The clock on the mantle struck midnight, its chimes echoing through the silent house like a funeral dirge. Detective Alistair Vance knelt beside the victim, his gloved hand hovering over the frozen expression of eternal surprise. The fire had died to embers, casting long, dancing shadows that seemed to mock the stillness of death. A single white feather lay atop the victim's chest, its pristine condition a stark contrast to the violent scene. Vance noted the open window, the torn curtain fluttering in the storm, a deliberate breach in the home's fortress. The housekeeper, Mrs. Gable, stood trembling in the doorway, her whisper cutting through the storm's roar: "He never left." The victim's right hand was clenched tightly around a tarnished silver locket, its chain broken and dangling precariously. Vance's partner, Inspector Reed, entered quietly, his footsteps muffled by the thick Persian rug already stained with the night's events. "The victim is Lord Alistair Blackwood," Reed stated, his voice low. "His own party, and he's the one found dead." The storm intensified, rattling the windowpanes as if trying to shake loose the secrets trapped within the manor's cold walls.
created_at"2026-03-12T00:42:28.612Z" 3/12/2026, 12:42:28 AM
model"openrouter/hunter-alpha"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1000
moderation_latency(null)
generation_time9658
tokens_prompt46
tokens_completion563
native_tokens_prompt2083
native_tokens_completion472
native_tokens_completion_images(null)
native_tokens_reasoning211
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-1773276148-DeqSQOiX9hx4LXEmUl00"
upstream_id"gen-1773276148-DeqSQOiX9hx4LXEmUl00"
total_cost0
cache_discount(null)
upstream_inference_cost0
provider_name"Stealth"

Evaluation details

Result Evaluator Details Meta Data
25.14% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
018
117
218
318
418
519
619
737
820
911
1029