Run: 2026-02-24-01KJ8V04Z53MG2Z40B4B4587AP

Run Details

Duration:
30.2s
Cost:
$0.078580
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
100.00% 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 old mansion stood silent at the end of Blackwood Lane, its tall windows dark against the pale morning sky. Detective Clara Marsh ducked beneath the yellow tape and stepped through the front door, her badge catching the dim light. The body lay crumpled at the foot of the grand staircase, one pale hand still reaching toward the railing above. No blood was visible anywhere on the marble floor, which made the entire scene feel eerily wrong to her eyes. A shattered wine glass rested near the victim's left hand, the dark red liquid pooled across the cold white tiles. She knelt beside the dead man and noticed the faintest trace of something purple staining the corners of his lips. His name was Edward Holloway, the wealthiest man in the county, and someone in this house had wanted him dead. Clara stood slowly and scanned the shadowed foyer, knowing that the killer had likely been someone the victim trusted completely. Upstairs, a floorboard creaked, and every officer in the room froze, their hands instinctively moving to rest on their weapons. Clara raised a finger to her lips and moved toward the staircase, each step bringing her closer to the truth.
created_at"2026-02-24T22:06:01.712Z" 2/24/2026, 10:06:01 PM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1384
moderation_latency228
generation_time29918
tokens_prompt46
tokens_completion644
native_tokens_prompt61
native_tokens_completion3131
native_tokens_completion_images(null)
native_tokens_reasoning335
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"
usage0.07858
router(null)
provider_responses
0
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
id"ec7760fc-b1b5-4192-a8b8-3973aff06c41"
is_byokfalse
latency1351
model_permaslug"anthropic/claude-4.6-opus-20260205"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771970761-yxJl8TwccIuxs5vmE9k0"
upstream_id"ec7760fc-b1b5-4192-a8b8-3973aff06c41"
total_cost0.07858
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920