Run: 2026-09-25-01M3CKBP7EC5RF45JTZ174SJWN

Run Details

Duration:
2.9s
Cost:
$0.002027
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
0.00% 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 grand library fell silent as the clock struck midnight with an eerie, echoing chime. Detective Harlow adjusted his glasses, scanning the shadowed shelves for any sign of movement. A single candle flickered on the mahogany desk, casting long, trembling shadows across the floor. The victim lay sprawled near the fireplace, a crimson stain spreading across his tailored waistcoat. His monocle had rolled beneath the armchair, glinting faintly in the dim, uncertain light. A faint scent of lavender and gunpowder lingered in the air, thick and unsettling. The butler stood rigid by the door, his pale hands clutching a silver tray too tightly. Whispers slithered through the gathered guests, each word laced with suspicion and barely concealed fear. Harlow knelt beside the body, noting the absence of any visible struggle or defensive wounds. The window latch was broken, suggesting someone had entered or exited in haste. A torn scrap of fabric snagged on the curtain hinted at a hurried, desperate escape. The victim’s pocket watch had stopped at exactly eleven forty-seven, its hands frozen in time. Harlow’s pulse quickened as he realized the killer might still be in the room.
created_at"2026-09-25T15:36:19.958Z" 9/25/2026, 3:36:19 PM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency640
moderation_latency(null)
generation_time2905
tokens_prompt46
tokens_completion307
native_tokens_prompt51
native_tokens_completion260
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
service_tier"default"
usage0.0020265
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790350579-ulhgCe8o3tjdi2iaKzrq"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790350579-nxQd36qvNiBrEXAP25oj"
upstream_id"e51135be39ce4f4d852803cd2ecafddf"
provider_responses
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endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"e51135be39ce4f4d852803cd2ecafddf"
is_byokfalse
latency639
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.0020265
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
0.00% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
015
114
215
315
414
514
616
715
815
913
1015
1115
1214