Run: 2026-07-01-01KWE8Y64A6CJY7H15EH3NVHXV

Run Details

Duration:
15.1s
Cost:
$0.018200
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 upon the old manor's gray slate roof. Detective Hale stood silently beside the cold body near midnight. Blood pooled darkly across the polished, ancient oak library floor. The victim's glassy eyes stared upward, frozen in silent terror. Someone had extinguished every candle except one flickering, dying flame. Hale knelt down slowly, examining the wound with practiced care. A single letter lay crumpled beside the victim's cold hand. The manor's other guests slept soundly, unaware of the horror. Somewhere upstairs, an old clock struck twelve with hollow chimes. Detective Hale already knew this night would haunt him forever.
created_at"2026-07-01T07:22:47.828Z" 7/1/2026, 7:22:47 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3597
moderation_latency(null)
generation_time15065
tokens_prompt46
tokens_completion313
native_tokens_prompt60
native_tokens_completion1808
native_tokens_completion_images(null)
native_tokens_reasoning135
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"
usage0.0182
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01PAbyXLnEZy8937D3qM65LM"
is_byokfalse
latency1643
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-1782890567-DcearocoCPHzTh3hQdGJ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890567-sgVEDA2gnsGoxNMk4PuT"
upstream_id"msg_01PAbyXLnEZy8937D3qM65LM"
total_cost0.0182
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