Run: 2026-03-12-01KKHZ9E4NGMFA8V646TTQHCVW

Run Details

Duration:
1.0s
Cost:
$0.000858
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
2.58% 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 detective entered the dimly lit mansion carefully observing every shadow that danced across the antique wooden walls. A sudden chilling breeze whispered through the grand hallway carrying faint echoes of a distant desperate scream. Bloodstains adorned the priceless Persian rug forming intricate patterns that told stories of violence and betrayal. The victim lay motionless near the ornate fireplace clutching a mysterious letter that might reveal hidden secrets. Servants gathered nervously in the corner exchanging suspicious glances while avoiding direct eye contact with the investigator. Thunder roared outside as rain pounded relentlessly against the tall windows creating an atmosphere of impending doom. Clocks struck midnight simultaneously throughout the estate marking the official beginning of this puzzling homicide investigation.
created_at"2026-03-12T21:29:52.026Z" 3/12/2026, 9:29:52 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency274
moderation_latency(null)
generation_time932
tokens_prompt46
tokens_completion212
native_tokens_prompt157
native_tokens_completion129
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached128
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0008576
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"45eee1b0-09a5-32c4-dce2-39ade6f34d2e"
is_byokfalse
latency259
model_permaslug"x-ai/grok-4.20-beta-20260309"
provider_name"xAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773350992-tuvwCeFKxWWpXh7lPmJO"
upstream_id"45eee1b0-09a5-32c4-dce2-39ade6f34d2e"
total_cost0.0008576
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
2.58% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
018
117
216
317
417
517
616