Run: 2026-07-08-01KX1KQXREJE1TZ8ZE9CM3KMEB

Run Details

Duration:
32.8s
Cost:
$0.019256
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
100.00% 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 old mansion stood silent under the moonlight as the detective arrived to investigate the sudden death of its owner. Inside the dark library the bloody body of the rich victim lay sprawled on the cold floor with a knife. No signs of any forced entry appeared anywhere in the house yet all the windows remained locked securely from inside. The detective carefully examined the strange crumpled note left beside the body mentioning a dark family secret from the past.
created_at"2026-07-08T19:37:11.191Z" 7/8/2026, 7:37:11 PM
model"x-ai/grok-4.5-20260708"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency646
moderation_latency(null)
generation_time32640
tokens_prompt46
tokens_completion663
native_tokens_prompt241
native_tokens_completion3161
native_tokens_completion_images(null)
native_tokens_reasoning3076
native_tokens_cached128
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"completed"
service_tier"default"
usage0.019256
router(null)
provider_responses
0
endpoint_id"0e927811-b1a8-4604-8b86-db5ce6eaa87c"
id"1075a9a4-debb-9735-94f1-23c9ea4306b6"
is_byokfalse
latency114
model_permaslug"x-ai/grok-4.5-20260708"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783539431-4GGWSVsOCaIM9ZUHaCR7"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783539431-TbkXn2aICWhEnrtFOMsU"
upstream_id"1075a9a4-debb-9735-94f1-23c9ea4306b6"
total_cost0.019256
cache_discount0.000192
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320