Run: 2026-07-01-01KWE901X239DAVSDY0BAK9JPZ

Run Details

Duration:
5.4s
Cost:
$0.002210
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
69.70% 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 against the old mansion's tall windows outside. Detective Sarah Chen stepped carefully around the study's threshold. The victim lay sprawled beside an overturned mahogany desk. Blood pooled slowly across the antique Persian rug beneath him. Nobody had heard anything unusual during the storm's fury. Seven guests remained trapped inside the house that night. Each one claimed innocence while avoiding direct eye contact. The butler stood silently near the flickering fireplace embers. Chen noticed the missing letter opener from its holder. Someone in this house was lying through their teeth.
created_at"2026-07-01T07:23:49.035Z" 7/1/2026, 7:23:49 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1751
moderation_latency(null)
generation_time5349
tokens_prompt46
tokens_completion158
native_tokens_prompt60
native_tokens_completion209
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"
usage0.00221
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01XRP7TqQ95J7ADZJbogwY21"
is_byokfalse
latency1751
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-1782890629-XKfqzTvoslh4xxNAPtbP"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890629-y8rVTtuOwRpBzHGZ2KGh"
upstream_id"msg_01XRP7TqQ95J7ADZJbogwY21"
total_cost0.00221
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
69.70% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
04
19
29
39
410
59
69
79
89
99
109