Run: 2026-07-01-01KWE932448AWD2Z1TD21VB5TW

Run Details

Duration:
7.7s
Cost:
$0.003350
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
67.14% 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
# The Last Guest Rain hammered the old mansion's windows without any mercy. Detective Sarah Chen arrived precisely at midnight's darkest hour. The butler waited nervously beside the grand oak door. "They're all here," he whispered, glancing back inside quickly. Seven guests sat frozen around the mahogany dining table. Nobody dared move, speak, or even breathe too loudly. The host lay motionless, face down near his chair. Blood pooled slowly beneath him, staining the Persian rug. Sarah scanned each face, searching for signs of guilt. Someone in this room had committed cold-blooded murder. The candles flickered wildly as thunder shook the walls. "No one leaves," Sarah announced, removing her damp coat. She studied the scene, noting details others might miss. A wine glass lay shattered near the victim's hand. Something about this careful setup felt terribly wrong here. The killer, she suspected, was hiding in plain sight.
created_at"2026-07-01T07:25:27.565Z" 7/1/2026, 7:25:27 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1645
moderation_latency(null)
generation_time7619
tokens_prompt46
tokens_completion235
native_tokens_prompt60
native_tokens_completion323
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)
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web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.00335
router(null)
provider_responses
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endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01MzCabRNrqMZ5D4tAj3eQTd"
is_byokfalse
latency1645
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-1782890727-mz5MUF6S7PW9btw2nadT"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890727-cJZQpxJEUAyHhI6MVq78"
upstream_id"msg_01MzCabRNrqMZ5D4tAj3eQTd"
total_cost0.00335
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
67.14% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
04
19
29
39
49
59
69
79
89
99
108
119
129
139
149
159
169