Run: 2026-07-01-01KWE9TR8XS5DSGV6JEVQ6JK3A

Run Details

Duration:
15.3s
Cost:
$0.018190
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
97.12% 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 hammered the old, quiet streets of Millbrook town. Detective Sarah Cole stood quietly beneath the flickering streetlamp outside. A body lay motionless upon the cold, wet pavement below. Blood pooled slowly beneath the victim's pale, lifeless right hand. Sarah knelt down, examining the entire scene with practiced care. No wallet, no phone, only a torn old photograph remained. She turned it over, noticing a strange name written faintly. Somewhere close by, a lone church bell tolled midnight ominously. Sarah whispered, "This is only just the terrible beginning, unfortunately."
created_at"2026-07-01T07:38:23.915Z" 7/1/2026, 7:38:23 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3889
moderation_latency(null)
generation_time15240
tokens_prompt46
tokens_completion346
native_tokens_prompt60
native_tokens_completion1807
native_tokens_completion_images(null)
native_tokens_reasoning185
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"
usage0.01819
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01QFQAeX8bfpJ1sNcgcvBJ3u"
is_byokfalse
latency1885
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-1782891503-Ro0WlOX9SIoyineuY3Gf"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891503-sSfeR75aH2zui3Eoxs1K"
upstream_id"msg_01QFQAeX8bfpJ1sNcgcvBJ3u"
total_cost0.01819
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
97.12% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
09
110
210
310
410
510
610
710
810