Run: 2026-02-20-01KHY874PH8Z9YKZ5N0YYZPZTV

Run Details

Duration:
11.2s
Cost:
$0.000548
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
97.12% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain pounded the windows of the darkened Victorian mansion relentlessly. Guests gathered around the fireplace seeking warmth and idle chatter. Sir Reginald hosted his annual party with elegant pomp and style. Suddenly, a piercing scream echoed through the grand hallway nearby. Panicked guests rushed toward the source of that bloodcurdling cry. They discovered Lady Eleanor's body sprawled lifeless on library floor. A bloodied dagger lay beside her pale and motionless form. Inspector Graves arrived swiftly after the frantic emergency call came. He surveyed the gruesome scene with sharp and practiced eyes.
created_at"2026-02-20T19:25:23.549Z" 2/20/2026, 7:25:23 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency684
moderation_latency(null)
generation_time11132
tokens_prompt46
tokens_completion277
native_tokens_prompt191
native_tokens_completion1065
native_tokens_completion_images0
native_tokens_reasoning949
native_tokens_cached151
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"
usage0.00054805
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"0cb04de0-20e0-1a44-1a66-3c07a554bdc5"
is_byokfalse
latency443
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615523-Rz1lyYSzM9eDjhOU9d2m"
upstream_id"0cb04de0-20e0-1a44-1a66-3c07a554bdc5"
total_cost0.00054805
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
97.12% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
010
110
211
310
410
510
610
710
810