Run: 2026-03-12-01KKHZTBMKH3M33XPPXRTYRM6T

Run Details

Duration:
11.6s
Cost:
$0.020878
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 very experienced detective arrived at the large crime scene with a sense of danger filling the cold night air. He noticed the lifeless body of the victim lying on the expensive oriental rug in the middle of the room. The murder weapon appeared to be an antique letter opener covered in the fresh blood stains from the violent attack. Several suspicious guests had already gathered in the elegant drawing room waiting nervously for the interrogation session to begin shortly. The loyal butler seemed anxious while he described how the victim had argued with all the family members earlier today. The inspector examined every detail of the chaotic study searching for additional clues left behind by the ruthless killer deliberately.
created_at"2026-03-12T21:39:06.52Z" 3/12/2026, 9:39:06 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11191
moderation_latency(null)
generation_time11344
tokens_prompt46
tokens_completion185
native_tokens_prompt159
native_tokens_completion3465
native_tokens_completion_images0
native_tokens_reasoning3338
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"
usage0.0208776
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"583bd602-1d37-71c2-4e08-96f7b6c4c864"
is_byokfalse
latency238
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-1773351546-5huut782pBz0wQDEnWm0"
upstream_id"583bd602-1d37-71c2-4e08-96f7b6c4c864"
total_cost0.0208776
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520