Run: 2026-03-12-01KKHZPMNEQ5G4B89WBTJXSF43

Run Details

Duration:
821ms
Cost:
$0.000630
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
0.24% 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 just as the clock struck midnight with a sense of foreboding. Rain poured down heavily soaking his coat while thunder echoed through the dark stormy night sky. He noticed the front door was slightly ajar revealing a trail of muddy footprints inside. A chilling silence filled the grand hallway except for the distant sound of a dripping faucet. The body lay motionless on the ornate rug with a silver dagger protruding from its chest.
created_at"2026-03-12T21:37:04.691Z" 3/12/2026, 9:37:04 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency291
moderation_latency(null)
generation_time755
tokens_prompt46
tokens_completion126
native_tokens_prompt157
native_tokens_completion91
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"
usage0.0006296
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"ec271937-f293-d2af-3d84-8aad1b0078d5"
is_byokfalse
latency250
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-1773351424-1i8s6sfpnXDDBoMZCSSd"
upstream_id"ec271937-f293-d2af-3d84-8aad1b0078d5"
total_cost0.0006296
cache_discount0.0002304
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
0.24% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
017
116
215
316
416