Run: 2026-02-24-01KJ8VZMV4E9FSNA0WH9RHF2X4

Run Details

Duration:
23.9s
Cost:
$0.035205
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.38% 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 body lay crumpled beneath the old oak tree outside. Detective Sarah Mills arrived at the scene before dawn broke. She knelt beside the victim and studied his pale face. No identification was found in any of his coat pockets. A single red rose had been placed upon his chest. Its thorns had drawn small drops of blood on him. Rain began to fall softly across the dark empty street. The nearest officer approached her with a grim tired expression. He said the neighbors had not heard a single sound. Sarah stood and gazed at the houses lining the road. Every window was dark except for one on the corner. Behind its curtain a shadow moved quickly and then vanished. She made a mental note to visit that house first. This killing was not random and she already knew why. The rose was a signature she had seen three times before. Somewhere in this quiet town a killer walked among them.
created_at"2026-02-24T22:23:13.774Z" 2/24/2026, 10:23:13 PM
model"anthropic/claude-4.6-opus-20260205"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1617
moderation_latency191
generation_time23618
tokens_prompt46
tokens_completion512
native_tokens_prompt61
native_tokens_completion1396
native_tokens_completion_images(null)
native_tokens_reasoning288
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"
usage0.035205
router(null)
provider_responses
0
endpoint_id"a8708fb9-08ea-43bb-a3b1-165c87ef09df"
id"b5771005-ba23-4d89-ac2e-b062b9d24768"
is_byokfalse
latency1526
model_permaslug"anthropic/claude-4.6-opus-20260205"
provider_name"Amazon Bedrock"
status200
api_type"completions"
id"gen-1771971793-jmH9bkTAKm3QsZK0N6gO"
upstream_id"b5771005-ba23-4d89-ac2e-b062b9d24768"
total_cost0.035205
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"

Evaluation details

Result Evaluator Details Meta Data
98.38% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1411
1510