Run: 2026-02-08-01KGYYQJ17P7MWRH4G84EMT557

Run Details

Duration:
21.8s
Cost:
$0.001946
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
70.68% 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
The rain fell hard on the cobblestone streets of Blackthorn Hollow, echoing secrets the town refused to speak aloud. Detective Eleanor Blake stepped from her worn sedan, trench coat damp, eyes scanning the shadowed alley where the body was found. A single lamplight flickered above the crime scene, illuminating the pale hand protruding from beneath a bloodstained velvet cloak. Sergeant Calloway approached, breath visible in the cold, holding a notepad with trembling, gloveless fingers despite the winter chill. No witnesses had come forward, though every shuttered window likely hid a pair of watching eyes filled with fear or guilt. The victim, later identified as reclusive novelist Victor Hale, lay faceup, a fountain pen plunged deep into his left temple. Blood mixed with rainwater formed thin crimson rivulets that snaked toward the gutter, carrying whispers of unfinished stories. His manuscript pages were scattered nearby, fluttering like wounded birds, each page ending mid-sentence as if fear had struck first. Eleanor knelt, careful not to disturb evidence, and noticed the pen's gold engraving: "To V — may your words live forever." She glanced toward the empty balcony of the old Victorian library, where a broken window suggested a hurried, unseen escape. Something about the scene felt staged—a narrative constructed not just to kill, but to tell a very specific, chilling tale.
created_at"2026-02-08T15:43:30.914219+00:00" 2/8/2026, 3:43:30 PM
model"writer/palmyra-x5-20250428"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17801
moderation_latency208
generation_time21489
tokens_prompt35
tokens_completion293
native_tokens_prompt273
native_tokens_completion297
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
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"stop"
usage0.0019458
router(null)
provider_responses
0
status200
is_byokfalse
latency17799
endpoint_id"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name"Amazon Bedrock"
model_permaslug"writer/palmyra-x5-20250428"
api_type"completions"
id"gen-1770565388-qMZosHEI03jgOV6s8ksT"
upstream_id(null)
total_cost0.0019458
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
70.68% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
019
121
219
319
421
520
618
720
820
920
1021