Run: 2026-05-01-01KQHS7XBF4KWCW8S724FMWC5X

Run Details

Duration:
20.3s
Cost:
$0.005332
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 wealthy businessman lay dead on the expensive oriental rug in his luxurious mansion study with a mysterious sharp knife. His loyal butler discovered the body shortly after midnight and immediately telephoned the experienced detective inspector for immediate professional help. The renowned detective arrived at the scene with his trusted assistant carrying notebooks and forensic equipment for thorough detailed investigation. The shocked family members gathered around the crime scene and whispered quietly among themselves about various possible motives and alibis.
created_at"2026-05-01T12:46:57.922Z" 5/1/2026, 12:46:57 PM
model"x-ai/grok-4.20-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency19581
moderation_latency(null)
generation_time20247
tokens_prompt46
tokens_completion712
native_tokens_prompt159
native_tokens_completion2080
native_tokens_completion_images(null)
native_tokens_reasoning1992
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"
usage0.00533155
router(null)
provider_responses
0
endpoint_id"3ecee37f-b217-4093-87fb-aaf0afe307af"
id"9443acb1-64d7-921c-a25b-44f2cc4e5179"
is_byokfalse
latency97
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-1777639617-HZKF3J0GE6RGBsvNoYtY"
session_id(null)
api_type"completions"
id"gen-1777639617-2w8DdgET9GhGNgkCa7dg"
upstream_id"9443acb1-64d7-921c-a25b-44f2cc4e5179"
total_cost0.00533155
cache_discount0.0000672
upstream_inference_cost0
provider_name"xAI"
response_cache_source_id(null)

Evaluation details

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