Run: 2026-02-20-01KHYAAZFQ27YPNXN8X0XA5H9K

Run Details

Duration:
5.9s
Cost:
$0.000291
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
77.88% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed the manor windows fiercely. Lightning cracked the midnight sky open. Detective Black arrived just after midnight. Butler greeted him with trembling voice. "Come quickly, sir, dreadful thing happened." They hurried down the candlelit hall. Drawing room door stood slightly ajar. Inside, Lady Ashford lay stone dead. Throat slashed deep with razor blade. Blood soaked the Persian rug red. Candlestick toppled near her cold hand. Footprints trailed to French doors outside. Storm raged as killer escaped free.
created_at"2026-02-20T20:02:26.434Z" 2/20/2026, 8:02:26 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency334
moderation_latency(null)
generation_time5829
tokens_prompt46
tokens_completion195
native_tokens_prompt191
native_tokens_completion562
native_tokens_completion_images0
native_tokens_reasoning447
native_tokens_cached190
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"
usage0.0002907
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"105cd530-136e-850e-72ba-6eca17831601"
is_byokfalse
latency102
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617746-r1kuvT6ftld2oqOKtlZf"
upstream_id"105cd530-136e-850e-72ba-6eca17831601"
total_cost0.0002907
cache_discount0.0000285
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
77.88% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
06
16
26
36
46
56
66
76
86
96
106
116
126