Run: 2026-10-07-01M4ATWBZR50GP5KX5V2SG1JEM

Run Details

Duration:
1.7s
Cost:
$0.001044
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
15.07% 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 grand library fell silent as the clock struck midnight with an eerie, echoing chime through the dusty halls. Detective Harlow adjusted his glasses, scanning the shadowed shelves where the victim’s body lay sprawled unnaturally. A single bloodstained letter opener glinted under the flickering gaslight, its handle carved with an intricate serpent design. The guests exchanged nervous glances, each one clutching their alibis like fragile, half-spun webs of desperate deception. Outside, the storm raged violently, rattling the stained-glass windows with a sound like distant, mournful whispers.
created_at"2026-10-07T09:24:59.518Z" 10/7/2026, 9:24:59 AM
model"mistralai/mistral-medium-3.5-20260430"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency292
moderation_latency(null)
generation_time1689
tokens_prompt46
tokens_completion154
native_tokens_prompt51
native_tokens_completion129
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"
usage0.001044
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791365099-w7AZj9244dtcV2Vdrj5K"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791365099-XcKihOmgOzcGy8DxDXxg"
upstream_id"2952bec88b484d17906a171de390d467"
provider_responses
0
endpoint_id"d21d316f-d540-4718-b36e-3beff85d0cf9"
id"2952bec88b484d17906a171de390d467"
is_byokfalse
latency292
model_permaslug"mistralai/mistral-medium-3.5-20260430"
provider_name"Mistral"
status200
total_cost0.001044
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
15.07% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
019
116
218
317
416