Run: 2026-07-01-01KWE8TYKAKJBEJ4GYBH2G1D4M

Run Details

Duration:
31.4s
Cost:
$0.040840
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 relentlessly against the old manor's tall windows as Detective Sarah Chen finally stepped through the creaking front door. The lifeless body lay motionless upon the polished mahogany floor, surrounded completely by shattered glass, blood, and utter eerie silence. Detective Chen knelt slowly beside the victim, carefully noting the very pale, cold skin under the faintly dim flickering candlelight. No weapon was visible anywhere, yet the entire scene reeked of something far more sinister than a simple robbery tonight. Chen glanced toward the open window, where torn curtains still fluttered wildly in the raging cold storm's relentless wind outside. Somewhere within this darkened old house tonight, a killer was patiently watching, waiting for the raging storm to finally pass.
created_at"2026-07-01T07:21:01.814Z" 7/1/2026, 7:21:01 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4583
moderation_latency(null)
generation_time30336
tokens_prompt46
tokens_completion590
native_tokens_prompt60
native_tokens_completion4072
native_tokens_completion_images(null)
native_tokens_reasoning391
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"
usage0.04084
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01V6R9YEvkTBsqm4byMWj8Sm"
is_byokfalse
latency1787
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-1782890462-gdPMwvP3JlNlv0XdJrPy"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890462-wELuavPKt8VnJq0KqsuG"
upstream_id"msg_01V6R9YEvkTBsqm4byMWj8Sm"
total_cost0.04084
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
sentences6
wordCounts
020
120
220
320
420
520