Run: 2026-02-24-01KJ8WZEVB25E04AAQNRCC0JWB

Run Details

Duration:
19.1s
Cost:
$0.033155
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
94.24% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old mansion stood silent against the dark cold winter sky. Detective Harris stepped through the heavy front door without knocking. A body lay crumpled at the bottom of the stairs. Blood had pooled beneath the victim's head like dark wine. She knelt beside the man and studied his pale face. His expression held surprise, as if death came without warning. The grandfather clock in the hallway had stopped at midnight. Five guests had been staying in the house that night. Each one claimed to have been sleeping through the murder. No one had heard a thing, or so they claimed. Harris pulled her notebook out and began writing detailed notes. The dead man was Richard Cole, owner of this estate. His wife stood weeping softly at the top of the stairs. Someone in this house was lying, and she would know. The truth always revealed itself if you asked enough questions. She looked up at the frightened faces watching from above. One of you knows exactly what happened here tonight, she said. The silence that followed told her more than any words could.
created_at"2026-02-24T22:40:36.214Z" 2/24/2026, 10:40:36 PM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1417
moderation_latency213
generation_time18790
tokens_prompt46
tokens_completion540
native_tokens_prompt61
native_tokens_completion1314
native_tokens_completion_images(null)
native_tokens_reasoning261
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"
usage0.033155
router(null)
provider_responses
0
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
id"12bc654f-e851-4935-8fb6-0f331898d695"
is_byokfalse
latency1329
model_permaslug"anthropic/claude-4.6-opus-20260205"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771972836-22LFoKIz3CBhR9Nm3Qku"
upstream_id"12bc654f-e851-4935-8fb6-0f331898d695"
total_cost0.033155
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
94.24% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
011
110
210
310
410
510
610
710
810
910
1010
1110
1211
1310
1410
1510
1611
1711