Run: 2026-07-01-01KWE9DDSQXW4FBRN8HZDMESPH

Run Details

Duration:
33.8s
Cost:
$0.043080
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain hammered against the old manor's tall windows as Detective Clara Voss stepped carefully across the dark, creaking wooden floor. A single candle flickered on the mahogany desk, casting long shadows across scattered papers and a tarnished silver letter opener. Lord Ashford lay motionless behind the heavy oak desk, his eyes staring blankly toward the cracked plaster ceiling above him. Detective Voss knelt quietly beside the body, carefully noting the deep crimson stain spreading slowly across his white silk shirt. Nothing else in the study seemed disturbed except for a single missing item: the ornate ruby ring he always wore. She glanced toward the open window, quietly noticing wet, muddy footprints leading out into the dark, silent, storm-soaked garden beyond. The storm outside seemed to whisper ancient secrets that only the killer, and the old manor itself, somehow truly understood.
created_at"2026-07-01T07:31:07.201Z" 7/1/2026, 7:31:07 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3880
moderation_latency(null)
generation_time33774
tokens_prompt46
tokens_completion628
native_tokens_prompt60
native_tokens_completion4296
native_tokens_completion_images(null)
native_tokens_reasoning403
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"
usage0.04308
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01EnkkEWL9qATBvqWmW97sU3"
is_byokfalse
latency1581
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-1782891067-ncv1yE4k7QxyAem7gfob"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891067-nHWGreDH0WS6RUQkAYtx"
upstream_id"msg_01EnkkEWL9qATBvqWmW97sU3"
total_cost0.04308
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
sentences7
wordCounts
020
120
220
320
420
520
620