Run: 2026-05-01-01KQHS26NPAFSJV70XVVZA2FNP

Run Details

Duration:
2.3s
Cost:
$0.000407
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
63.48% 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 detective entered the dimly lit mansion with cautious steps. Blood stained the antique carpet in a gruesome pattern. Silence enveloped the grand hallway like an ominous shroud. Suddenly a faint whisper echoed from the upstairs study. Everyone present seemed hiding secrets behind nervous glances. The victim lay motionless clutching an old golden locket. Thunder rumbled loudly outside as rain began pouring down. Clues scattered everywhere yet none made immediate sense. Suspicion arose among the gathered family members quickly. This night would reveal dark truths buried for decades.
created_at"2026-05-01T12:43:50.847Z" 5/1/2026, 12:43:50 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency463
moderation_latency(null)
generation_time2202
tokens_prompt46
tokens_completion157
native_tokens_prompt157
native_tokens_completion111
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached64
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"
usage0.00040655
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"8d9eed6e-5a6c-1870-7c31-2c06fabb81f1"
is_byokfalse
latency84
model_permaslug"x-ai/grok-4.20-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777639430-9dIyJksHAWlgnaKWcOdQ"
session_id(null)
api_type"completions"
id"gen-1777639430-Mu9z3EDk76oEskcUwh1n"
upstream_id"8d9eed6e-5a6c-1870-7c31-2c06fabb81f1"
total_cost0.00040655
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
63.48% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
19
29
39
48
59
69
78
88
99