Run: 2026-10-07-01M4ASJP2S51FEEBJXQ38CV01D

Run Details

Duration:
1.7s
Cost:
$0.001194
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
24.73% 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 through the dusty halls. Detective Marlowe adjusted his coat, eyes scanning the shadowed shelves where secrets lurked behind leather-bound spines. A single candle flickered on the mahogany desk, its light revealing a letter stained with crimson, possibly blood. The victim lay sprawled across the Persian rug, a silver dagger embedded deep in his motionless, pale chest. Footsteps creaked on the staircase, but no one appeared, leaving only the scent of lavender and fear hanging thick. Marlowe knelt, noticing a monogrammed handkerchief clutched in the dead man’s stiff, cold fingers.
created_at"2026-10-07T09:02:13.603Z" 10/7/2026, 9:02:13 AM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency257
moderation_latency(null)
generation_time1689
tokens_prompt46
tokens_completion173
native_tokens_prompt51
native_tokens_completion149
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"
usage0.001194
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791363733-o6OM1vlnxlDjn5J5T7K1"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791363733-bEM4cZGgLPnZNq4fhFi1"
upstream_id"492685ccbd7b4df28078eaeae6e64a14"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"492685ccbd7b4df28078eaeae6e64a14"
is_byokfalse
latency257
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001194
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
24.73% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
019
116
218
318
419
514