Run: 2026-07-01-01KWE9PQK2ZZE7X8SPXD2RM7J8

Run Details

Duration:
7.0s
Cost:
$0.003090
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
69.94% 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
# Chapter One Rain hammered the old mansion's windows through the dark night. Detective Sarah Chen stepped carefully across the creaking floor. The body lay motionless beside an overturned silver candlestick. Blood pooled slowly beneath the victim's pale, trembling hand. She knelt down, examining the scene with careful precision. Nothing seemed disturbed except one open bedroom window. The victim's face showed pure terror in his final moments. Sarah noticed the missing painting from above the fireplace. Someone had planned this murder with meticulous, careful attention. The storm outside masked whatever secrets this house held. Six guests remained trapped inside during the violent tempest. Each carried motives darker than the stormy night itself. Sarah pulled out her notebook and began writing names. Tonight would reveal who among them was the killer. The clock struck midnight as thunder shook the walls.
created_at"2026-07-01T07:36:12.141Z" 7/1/2026, 7:36:12 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1990
moderation_latency(null)
generation_time6917
tokens_prompt46
tokens_completion231
native_tokens_prompt60
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.00309
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_016mUjjYq25M8h6dvUXvobyp"
is_byokfalse
latency1990
model_permaslug"anthropic/claude-sonnet-5-20260630"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.17.0; linux; x64))"
http_referer(null)
request_id"req-1782891372-Sfav3cpZpBq40o9Iou5S"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891372-CAsakMkONvfAhSxtl2lb"
upstream_id"msg_016mUjjYq25M8h6dvUXvobyp"
total_cost0.00309
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
69.94% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
03
110
29
39
49
59
68
710
89
99
109
119
129
139
149
159