Run: 2026-07-01-01KWE9HGRPH739W6S4CVHBJR7Z

Run Details

Duration:
12.1s
Cost:
$0.013140
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 hammered hard against the old mansion's windows again tonight. Detective Sarah Mills arrived just before the clock struck midnight. A butler stood frozen near the grand staircase, trembling visibly. Lord Ashford lay motionless upon his own blood-stained study floor. Nobody had heard a single scream throughout the entire evening. Sarah knelt beside the body, examining the fatal wound closely. Something glinted beneath the desk, catching her trained detective's eye. She picked up a small, bloodied silver letter opener carefully.
created_at"2026-07-01T07:33:21.311Z" 7/1/2026, 7:33:21 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3515
moderation_latency(null)
generation_time12049
tokens_prompt46
tokens_completion279
native_tokens_prompt60
native_tokens_completion1302
native_tokens_completion_images(null)
native_tokens_reasoning132
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"
usage0.01314
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_014n7XUnEhLz9gYX9fJWQGM6"
is_byokfalse
latency1496
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-1782891201-9nKZy3CtVoJEAGlM5QWQ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891201-ZqbJbt8CV73KXBBrEsZF"
upstream_id"msg_014n7XUnEhLz9gYX9fJWQGM6"
total_cost0.01314
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
sentences8
wordCounts
010
110
210
310
410
510
610
710