Run: 2026-07-01-01KWE8VMX5JA2KVJV4JZ34RKGR

Run Details

Duration:
9.1s
Cost:
$0.004950
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
0.00% 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
# The Last Guest Rain hammered the old mansion's windows while thunder rolled across the darkened hills outside town. Detective Sarah Chen arrived precisely when the storm reached its most dramatic and violent peak. She noticed the front door standing open, swinging gently despite the absence of any breeze. Inside, seven guests huddled together, their faces pale beneath the flickering candlelight above them. The host, Marcus Webb, lay motionless on his study floor, blood pooling beneath him. Nobody had heard anything unusual, they claimed, despite the storm's relatively quiet moments throughout evening. Sarah studied each face carefully, searching for the smallest crack in their composure. The butler mentioned finding the body precisely at nine, right after the lights flickered. A shattered wine glass lay near the victim, its crimson contents mixing with actual blood. Someone had extinguished the fireplace deliberately, leaving the room colder than the rest of the house. Sarah crouched beside the body, examining the wound with her flashlight's narrow beam. "This wasn't a robbery," she muttered, noting the untouched safe behind the painting. Six suspects remained in that house, each harboring secrets darker than the storm outside. The power flickered again, plunging everyone into three seconds of absolute, terrifying darkness. When light returned, Sarah realized someone else had vanished from the room entirely. The game, she realized grimly, had only just begun tonight.
created_at"2026-07-01T07:21:24.658Z" 7/1/2026, 7:21:24 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
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cancelledfalse
latency1670
moderation_latency(null)
generation_time9051
tokens_prompt46
tokens_completion375
native_tokens_prompt60
native_tokens_completion483
native_tokens_completion_images(null)
native_tokens_reasoning0
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"
usage0.00495
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01AZMKeeKFhvzQp8yt8FVX3w"
is_byokfalse
latency1669
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-1782890484-dBlNjfBjlCpNvnGvAXGH"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890484-j4gdBXRilpx61G7NI7x6"
upstream_id"msg_01AZMKeeKFhvzQp8yt8FVX3w"
total_cost0.00495
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
0.00% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
04
115
215
315
414
514
615
713
814
915
1016
1113
1213
1314
1413
1513
1610