Run: 2026-03-12-01KKHZ4QWDM2FJCV3P5SY6BZH9

Run Details

Duration:
8.1s
Cost:
$0.015017
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 drawing room of the ancient family estate the guests had gathered quietly for dinner that evening. The old mansion stood silently on the hill during the stormy night of October with fierce winds blowing very hard. Inside the mansion the family members were arguing about the inheritance when a loud scream echoed through the halls suddenly. The butler discovered the body of the wealthy host lying in a pool of blood on the library floor instantly. Everyone rushed into the room and realized that this was indeed a very horrible murder committed by someone present there. .
created_at"2026-03-12T21:27:18.162Z" 3/12/2026, 9:27:18 PM
model"x-ai/grok-4.20-beta-20260309"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7799
moderation_latency(null)
generation_time8087
tokens_prompt46
tokens_completion149
native_tokens_prompt159
native_tokens_completion2469
native_tokens_completion_images0
native_tokens_reasoning2362
native_tokens_cached64
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"
usage0.0150168
router(null)
provider_responses
0
endpoint_id"33f49f24-a0de-4dcf-872d-ca514e83fbae"
id"965ef8a8-04f5-2dab-6efd-981c53c2a132"
is_byokfalse
latency351
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-1773350838-IOotSPiKSX6NB0QCp21A"
upstream_id"965ef8a8-04f5-2dab-6efd-981c53c2a132"
total_cost0.0150168
cache_discount0.0001152
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