Run: 2026-07-01-01KWEA9GYD0QG3PKD6CRX3XJXG

Run Details

Duration:
14.6s
Cost:
$0.016670
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain fell steadily over the quiet, dying seaside town tonight. Detective Mara Voss stepped carefully across the wet, dark cobblestones. A body lay sprawled beneath the old, flickering harbor light. Blood pooled slowly into the cracks between the worn stones. No one had heard a single scream that stormy night. Mara knelt down, examining the victim's pale, cold, dead face. His eyes stared blankly toward the churning, dark, endless sea. Something metallic glinted beside his outstretched, lifeless right hand there. Mara's pulse quickened; this was clearly no simple accident tonight. She whispered softly, "This vicious murder will not go unpunished."
created_at"2026-07-01T07:46:27.929Z" 7/1/2026, 7:46:27 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3683
moderation_latency(null)
generation_time14540
tokens_prompt46
tokens_completion282
native_tokens_prompt60
native_tokens_completion1655
native_tokens_completion_images(null)
native_tokens_reasoning118
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"
usage0.01667
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01KkBy6a9E79pdyTpc9r6rZp"
is_byokfalse
latency1569
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-1782891987-U6c2vjONUjhCSVJKaB4A"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891987-Rrf2Bug2sPRVceU9Mbfv"
upstream_id"msg_01KkBy6a9E79pdyTpc9r6rZp"
total_cost0.01667
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
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910