Run: 2026-03-18-01KM0964XCTC7FD7G16DGJ8W3V

Run Details

Duration:
2.8s
Cost:
$0.000173
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
49.21% 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 rain hammered against the windows as Eleanor Voss adjusted her gloves, her breath fogging the cold glass pane before her. Every evening, the old mansion’s bell tolled six times, yet no one dared answer its summons after dusk fell unnaturally silent. The butler’s key chain jingled as he unlocked the dining room, its oak doors groaning like a dying beast at the hour’s approach. A scent of burnt cinnamon lingered, though the kitchen fire had long since reduced to embers beneath the charred silver cauldron. Eleanor’s silk scarf slipped from her neck, pooling on the black-and-white tiles like a ghostly stain left by forgotten hands. The grandfather clock struck seven, its pendulum swinging too slowly, as if time itself had been drained of its usual rhythm. A muffled cry echoed from the west wing, sharp and sudden, cutting through the oppressive stillness like a blade through silk. The chandelier flickered, its crystals trembling as shadows stretched long and jagged across the bloodstained Turkish rug below. Eleanor’s gloved fingers tightened around the brass candlestick, its weight familiar yet strangely comforting against her trembling palm. The portrait above the fireplace watched, its painted eyes seeming to follow her as she took her first uneasy step forward.
created_at"2026-03-18T10:52:12.088Z" 3/18/2026, 10:52:12 AM
model"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency379
moderation_latency(null)
generation_time2680
tokens_prompt46
tokens_completion341
native_tokens_prompt51
native_tokens_completion275
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"
usage0.00017265
router(null)
provider_responses
0
endpoint_id"f5ed6283-4e17-457d-98cd-2ec0c318171d"
id"84d799aaf072414799dceb42d0108a53"
is_byokfalse
latency379
model_permaslug"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
provider_name"Mistral"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773831132-9bwWPDJ5AWhUtj3f23oI"
upstream_id"84d799aaf072414799dceb42d0108a53"
total_cost0.00017265
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
49.21% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
021
121
223
321
420
521
621
718
818
921