Run: 2026-10-06-01M48VKB7V1ZS7FN12ATBS45D6

Run Details

Duration:
5.6s
Cost:
$0.000352
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
55.99% 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 autumn wind howled through the village streets as Detective Mara Voss arrived at the old Blackwood Manor at dusk. She found the door unlocked and stepped inside, her flashlight cutting through the darkness of the grand foyer. A single chandelier flickered overhead, casting dancing shadows across the dusty furniture and faded family portraits everywhere. On the mahogany table sat a half-finished cup of tea, still warm, beside a silver letter opener with crimson stains. Lord Blackwood lay sprawled at the bottom of the staircase, his expensive suit torn and his eyes frozen in silent horror. Five people had been in this house tonight, and each one had a reason to want the old man dead forever.
created_at"2026-10-06T14:59:03.772Z" 10/6/2026, 2:59:03 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2951
moderation_latency(null)
generation_time5339
tokens_prompt46
tokens_completion176
native_tokens_prompt50
native_tokens_completion152
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"
usage0.00035168
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791298743-kqHThGCZDb1r6WK9EqJB"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791298743-O3TMbQucUP1n8FzplhqN"
upstream_id"90042aca28e54f669a4e1335bfb499ed"
provider_responses
0
endpoint_id"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id"90042aca28e54f669a4e1335bfb499ed"
is_byokfalse
latency2933
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00035168
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
55.99% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
118
217
320
421
521