Run: 2026-02-20-01KHY8PVNR0D5WN5EQZD6Y30Q0

Run Details

Duration:
2.2s
Cost:
$0.000058
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
0.07% 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
The old Victorian mansion loomed under a moonless sky, its gables clawing at the clouds. A single candle flickered in the grand foyer, casting long shadows on the marble floor. The butler stood rigid by the front door, his face a mask of frozen, unreadable concern. A sharp cry echoed from the drawing room, followed by the sound of splintering wood. The detective arrived just as the front door swung open with a violent, creaking groan. Footsteps pounded up the grand staircase, each step echoing like a drumbeat of impending doom. The air smelled of damp wool and something metallic, sharp and unmistakably like blood. A woman’s high-pitched scream pierced the night, then abruptly cut off into a guttural, choking gasp. The detective’s gloved hand tightened around his revolver, his breath coming in controlled, measured gasps. A figure stumbled into the foyer, their once-elegant coat now stained dark with something wet. The detective’s eyes narrowed as he recognized the victim—his old friend, the reclusive collector. The butler’s voice trembled as he whispered, *"He was alive just moments before this happened."* The detective’s mind raced, piecing together clues from the scattered candle wax and broken glass. A single playing card lay face-up on the floor, its edge jagged and torn. The detective crouched, examining the card’s design—a king, but not of hearts or spades. The butler’s hands shook as he pointed toward the library, where strange symbols were etched. The detective’s pulse quickened, knowing this wasn’t just murder—it was a message, cold and deliberate.
created_at"2026-02-20T19:33:58.594Z" 2/20/2026, 7:33:58 PM
model"mistralai/ministral-8b-2512"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency260
moderation_latency(null)
generation_time2028
tokens_prompt46
tokens_completion433
native_tokens_prompt39
native_tokens_completion349
native_tokens_completion_images(null)
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"
usage0.0000582
router(null)
provider_responses
0
endpoint_id"c85d26e1-1e0c-449b-9775-2afce7ae510b"
id"a0beab955db14719a71c7aace99cf31a"
is_byokfalse
latency258
model_permaslug"mistralai/ministral-8b-2512"
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771616038-rz2tSaPB7mfInBBeZFIk"
upstream_id"a0beab955db14719a71c7aace99cf31a"
total_cost0.0000582
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.07% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
015
115
216
315
415
515
614
717
815
916
1015
1115
1215
1315
1415
1515
1616