Run: 2026-02-20-01KHY7ZY005RPZM4SENHYJXCTB

Run Details

Duration:
5.5s
Cost:
$0.000192
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
89.63% 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
Fog shrouded the ancient mansion on that stormy autumn evening. Lightning flashed, revealing shadows dancing across the ivy-covered walls. Inside, the grand library held a chilling scene of horror. Sir Reginald slumped in his leather chair, lifeless and pale. A crystal decanter lay shattered beside his cold, rigid hand. Blood pooled from a single wound in his silk waistcoat. Lady Eleanor screamed, discovering the corpse in candlelight's glow. Footsteps echoed as guests rushed into the bloodstained chamber. Inspector Graves arrived, his keen eyes scanning every detail. Who among them wielded the dagger hidden in shadows?
created_at"2026-02-20T19:21:27.306Z" 2/20/2026, 7:21:27 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency220
moderation_latency(null)
generation_time5371
tokens_prompt46
tokens_completion283
native_tokens_prompt191
native_tokens_completion353
native_tokens_completion_images0
native_tokens_reasoning225
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"
usage0.00019205
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"655fc27e-3c9e-233f-7d40-3542307b8853"
is_byokfalse
latency53
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615287-BPkdAWNbEDL8Tturjcmz"
upstream_id"655fc27e-3c9e-233f-7d40-3542307b8853"
total_cost0.00019205
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
89.63% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
69
79
89
99