Run: 2026-07-01-01KWE8Z185A9E966AEP5KEV9XZ

Run Details

Duration:
5.2s
Cost:
$0.002300
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
42.33% 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 Body in the Library Rain hammered against the old mansion's tall, narrow windows. Detective Sarah Kane stepped carefully around the antique furniture. The victim lay sprawled beneath the grand oak desk. Blood pooled slowly across the faded Persian rug. She noticed the broken clock frozen at midnight. Nobody had heard anything unusual during the storm. The butler claimed he'd been sleeping since ten. Three guests remained upstairs, each with secrets buried deep. Kane examined the victim's clenched fist for clues. Something metallic glinted between his cold, stiff fingers. This would prove to be no simple case.
created_at"2026-07-01T07:23:15.602Z" 7/1/2026, 7:23:15 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1648
moderation_latency(null)
generation_time5199
tokens_prompt46
tokens_completion158
native_tokens_prompt60
native_tokens_completion218
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"
usage0.0023
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01W2QutSNUe8mBkx6XF2DqZR"
is_byokfalse
latency1648
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-1782890595-UHtLp2CCcouEvaMbranX"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890595-kGm5CaDlOUmIsJFYgFmy"
upstream_id"msg_01W2QutSNUe8mBkx6XF2DqZR"
total_cost0.0023
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
42.33% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
06
19
29
39
48
58
68
78
89
98
108
118