Run: 2026-02-24-01KJ8V73TZ2RMP6V1XTVYFGD08

Run Details

Duration:
1m 55s
Cost:
$0.200763
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
Detective Clara Marsh stepped out of her car and immediately noticed the front door of Thornfield Manor was wide open. The bitter rain was falling in thick relentless sheets that drummed hard against the old stone walls of the manor. She stepped cautiously through the wide open doorway and carefully shone her flashlight into the still and silent entrance hall. It was then that she saw the body of Lord Edmund Ashworth, crumpled silently at the foot of the staircase. He was lying face down on the cold marble floor, with one arm stretched forward as if reaching for something. A dark and wide stain had pooled beneath his body, creeping between the pale grout lines of the marble tiles. Lord Ashworth had been hosting his annual dinner party that night, and nine invited guests had all supposedly been present. Detective Marsh crouched beside the body and scanned the room, already certain that nothing about this scene was an accident. From somewhere deep within the dim manor, behind one of the many closed and heavy oak doors, a floorboard creaked. The murderer, she suddenly realized with a slow and dawning certainty, was still somewhere inside this sprawling and darkened manor. Every last one of them, Marsh now understood with grim and sickening dread, was a potential suspect in this murder.
created_at"2026-02-24T22:09:49.937Z" 2/24/2026, 10:09:49 PM
model"anthropic/claude-4.6-sonnet-20260217"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency633
moderation_latency289
generation_time114706
tokens_prompt46
tokens_completion1340
native_tokens_prompt61
native_tokens_completion13372
native_tokens_completion_images(null)
native_tokens_reasoning1014
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"
usage0.200763
router(null)
provider_responses
0
endpoint_id"83d802cb-44f2-45a0-a9d5-cb9bf79777c8"
id"cff52722-08b4-4b2c-b205-8f42d2b04246"
is_byokfalse
latency633
model_permaslug"anthropic/claude-4.6-sonnet-20260217"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771970989-Nrz1rHoWhDEpbQplm1ce"
upstream_id"cff52722-08b4-4b2c-b205-8f42d2b04246"
total_cost0.200763
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
sentences11
wordCounts
020
120
220
320
420
520
620
720
820
920
1020