Run: 2026-07-08-01KX1M1HCE8SDQK2PT870DJQA3

Run Details

Duration:
38.9s
Cost:
$0.022010
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
A fierce and terrible storm raged outside covering the old mansion in darkness and rain as lightning flashed brightly overhead. Inside the silent library the lifeless body of a man lay across the floor with a bloody knife beside him. Detective Harlan stepped carefully over the wet threshold of the old mansion holding his notebook and pen ready in hand. He noticed immediately that the victim had been stabbed multiple times during a fierce struggle that occurred late last night. Suspects would soon appear as many hard questions would arise about motives wealth jealousy revenge and secrets buried very deep.
created_at"2026-07-08T19:42:26.197Z" 7/8/2026, 7:42:26 PM
model"x-ai/grok-4.5-20260708"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency497
moderation_latency(null)
generation_time38793
tokens_prompt46
tokens_completion989
native_tokens_prompt241
native_tokens_completion3620
native_tokens_completion_images(null)
native_tokens_reasoning3508
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"
usage0.02201
router(null)
provider_responses
0
endpoint_id"0e927811-b1a8-4604-8b86-db5ce6eaa87c"
id"f30e53e1-7f39-979b-8d65-ecf762f3c867"
is_byokfalse
latency111
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-1783539746-zt2iibSQwD24cj1yuVB6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783539746-HsW4S9DAsxP15xQQIoLY"
upstream_id"f30e53e1-7f39-979b-8d65-ecf762f3c867"
total_cost0.02201
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
sentences5
wordCounts
020
120
220
320
420