Run: 2026-03-12-01KKHZPFVQDPEEKQW4YSTBC3H5

Run Details

Duration:
1.1s
Cost:
$0.000942
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
1.70% 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 arrived at the mansion after receiving an urgent anonymous telephone call during the stormy evening hours. The front door stood slightly ajar revealing complete darkness inside the once elegant Victorian style home. Rain poured heavily against the tall windows creating eerie shadows across the polished wooden floors. Blood stained the expensive Persian rug near the grand staircase where the victim had fallen. Lightning illuminated the lifeless body of the wealthy businessman sprawled awkwardly on the cold marble. Servants gathered nervously in the kitchen whispering about strange noises heard earlier that night. The inspector examined the murder weapon carefully while noting the absence of any obvious struggle signs. Footprints led mysteriously toward the library where important documents appeared to have been disturbed recently.
created_at"2026-03-12T21:36:59.772Z" 3/12/2026, 9:36:59 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency331
moderation_latency(null)
generation_time871
tokens_prompt46
tokens_completion221
native_tokens_prompt157
native_tokens_completion143
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"
usage0.0009416
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"af46e645-2dc2-bece-6a1e-ef5f33606d68"
is_byokfalse
latency308
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-1773351419-BounxHH4Q4of2TonHSZ9"
upstream_id"af46e645-2dc2-bece-6a1e-ef5f33606d68"
total_cost0.0009416
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
1.70% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
018
116
215
315
415
514
616
715