Run: 2026-10-06-01M48VNDJR95J7M7WEXPXN6XSA

Run Details

Duration:
4.5s
Cost:
$0.000299
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
94.82% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old lighthouse keeper found the body at dawn today. Inspector Mara Voss arrived quickly and surveyed the rocky shoreline carefully. Blood pooled beneath the victim's head on the wet stones. Three witnesses claimed they heard nothing during the dark night. The victim was a reclusive historian studying local maritime legends. A torn letter lay clutched in his cold, stiff hand. Rain began falling softly as the inspector photographed the scene. The lighthouse beam swept across the water every twelve seconds. Someone had clearly wanted this death to remain hidden. Mara noticed fresh tire tracks leading away from the cliff.
created_at"2026-10-06T15:00:11.485Z" 10/6/2026, 3:00:11 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency882
moderation_latency(null)
generation_time4447
tokens_prompt46
tokens_completion158
native_tokens_prompt50
native_tokens_completion127
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"
usage0.00029943
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791298811-K6HghfhYtU1wpHfrZJCI"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791298811-dx17vJ8AL83Rr8EJeIb3"
upstream_id"ca0ca5d0c3a842e4bd7cc51b1e49484b"
provider_responses
0
endpoint_id"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id"ca0ca5d0c3a842e4bd7cc51b1e49484b"
is_byokfalse
latency852
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00029943
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
94.82% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
111
210
310
410
510
610
710
89
910