Run: 2026-02-20-01KHYB76CHWGNMKSA4GN9MRJMF

Run Details

Duration:
5.8s
Cost:
$0.000229
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
80.09% 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
Fog cloaked the ancient manor house. Lightning flashed across stormy night sky. Scream pierced the midnight silence suddenly. Butler hurried down creaking oak stairs. Master lay dead in study. Blood pooled beneath his lifeless body. Throat gaped from savage razor cut. Candlestick fell near shattered inkwell glass. Footprints trailed through wet garden mud. Detective arrived as dawn broke slowly.
created_at"2026-02-20T20:17:51.001Z" 2/20/2026, 8:17:51 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency369
moderation_latency(null)
generation_time5659
tokens_prompt46
tokens_completion185
native_tokens_prompt191
native_tokens_completion438
native_tokens_completion_images0
native_tokens_reasoning351
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"
usage0.0002287
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"660688f6-0219-edc0-dc4e-0191aacada56"
is_byokfalse
latency149
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771618671-ye3o0tzNerPZ4bXf8F2N"
upstream_id"660688f6-0219-edc0-dc4e-0191aacada56"
total_cost0.0002287
cache_discount0.0000285
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
80.09% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
06
16
26
36
45
56
66
76
86
96