Run: 2026-07-01-01KWE9J6V57B3QAW8ZYGQW4ZXQ

Run Details

Duration:
5.8s
Cost:
$0.002620
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
63.40% 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 like frantic fingers tapping. Detective Sarah Voss stepped inside, shaking water from her coat. The butler stood frozen, his face pale as ash. "Mr. Whitmore is dead," he whispered, voice trembling badly. Sarah nodded, already scanning the grand foyer's shadows. Twelve guests had arrived for dinner that stormy night. Now only eleven remained breathing within these cold walls. She climbed the marble staircase, her senses sharp and alert. The study door stood open, revealing a gruesome scene. Blood pooled beneath a body slumped across mahogany. Sarah exhaled slowly, murmuring, "Let the questions begin."
created_at"2026-07-01T07:33:43.918Z" 7/1/2026, 7:33:43 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1982
moderation_latency(null)
generation_time5754
tokens_prompt46
tokens_completion168
native_tokens_prompt60
native_tokens_completion250
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"
usage0.00262
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01NdKsAD5QbxPT3UBGywwoCN"
is_byokfalse
latency1982
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-1782891223-UyFwmjpGoXWkQkt6QU8Z"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891223-ElM648rHfv1oNzvaAHtj"
upstream_id"msg_01NdKsAD5QbxPT3UBGywwoCN"
total_cost0.00262
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
63.40% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
04
110
210
39
49
58
69
79
810
99
108
118