Run: 2026-07-01-01KWEA5EC8RASWDZGK7TGNKCT7

Run Details

Duration:
12.1s
Cost:
$0.013240
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, forgotten little seaside town. Detective Mara Voss stood silently beneath the flickering streetlamp outside. A woman's body lay motionless beside the old wooden pier. Her eyes stared blankly at the starless, indifferent midnight sky. No one had heard a single scream or cry tonight. Mara knelt down, examining the strange bruises around her neck. Something metallic glinted faintly beneath the dead woman's pale hand. It was a small, tarnished key, oddly out of place. Mara's pulse quickened, sensing this was no ordinary drowning case. Somewhere in the shadows, the killer watched her every move.
created_at"2026-07-01T07:44:14.227Z" 7/1/2026, 7:44:14 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3782
moderation_latency(null)
generation_time12014
tokens_prompt46
tokens_completion270
native_tokens_prompt60
native_tokens_completion1312
native_tokens_completion_images(null)
native_tokens_reasoning96
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"
usage0.01324
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01Q3GicfdK6qjk3dSbwGXwGq"
is_byokfalse
latency1566
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-1782891854-S4pMKbURyVQJHY3UAC9H"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891854-oe4lPiGeM7QZLchwbtiR"
upstream_id"msg_01Q3GicfdK6qjk3dSbwGXwGq"
total_cost0.01324
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