Run: 2026-10-06-01M48VQ645R0MSTFJNN5G3BKP7

Run Details

Duration:
3.8s
Cost:
$0.000297
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
84.45% 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's first light. Blood pooled on the spiral stairs where no one should walk. A single white feather lay beside the dead man's cold hand. Inspector Mara Voss arrived before the fog could lift completely. She photographed everything before the tide could wash evidence away. The victim was a reclusive historian who studied maritime disasters. Three guests had stayed at the inn that stormy night. Each claimed they slept through the entire terrible event. The lighthouse keeper swore he heard nothing at all. Mara noticed mud on the floor near the door.
created_at"2026-10-06T15:01:09.389Z" 10/6/2026, 3:01:09 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency639
moderation_latency(null)
generation_time3804
tokens_prompt46
tokens_completion150
native_tokens_prompt50
native_tokens_completion126
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"
usage0.00029734
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791298869-aKfJNpLqUjC3a6beD51U"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791298869-F9niEP2HNN9QvhX9xA1c"
upstream_id"e420c0ba80f54358a5c6b03d42fac78d"
provider_responses
0
endpoint_id"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id"e420c0ba80f54358a5c6b03d42fac78d"
is_byokfalse
latency639
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00029734
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
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
111
211
310
410
510
610
79
89
99