Run: 2026-03-12-01KKHZAZEBJRCAZFGZCW1GMRKW

Run Details

Duration:
12.9s
Cost:
$0.023200
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
In the dimly lit mansion the host was discovered murdered by an unknown assailant late during the grand evening party. Everyone present at the event stared in disbelief at the gruesome scene while police arrived quickly to secure the area. The inspector examined the victim carefully now looking for any clues that might reveal who had committed this heinous crime. Whispers spread among suspicious attendees as they wondered which one of them could be the cold blooded killer hiding there. The butler seemed nervous when questioned about his whereabouts at the exact time when the fatal blow was struck silently. .
created_at"2026-03-12T21:30:42.515Z" 3/12/2026, 9:30:42 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency12572
moderation_latency(null)
generation_time12865
tokens_prompt46
tokens_completion155
native_tokens_prompt159
native_tokens_completion3852
native_tokens_completion_images0
native_tokens_reasoning3741
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"
usage0.0231996
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"90c88959-ca5e-779a-0ef8-e4a3c1d76a1d"
is_byokfalse
latency449
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-1773351042-iyIIwsoGDpfmPlKAKpLh"
upstream_id"90c88959-ca5e-779a-0ef8-e4a3c1d76a1d"
total_cost0.0231996
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420