Run: 2026-07-01-01KWE8V0KRGDDF2C1FG4BTC060

Run Details

Duration:
7.1s
Cost:
$0.003610
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
30.34% 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 Opening Scene Rain fell hard against the old manor's tall windows. Detective Sarah Cole stepped carefully through the creaking door. The butler waited nervously beside the grand staircase. "Something terrible happened here," he whispered with fear. Cole nodded slowly, removing her damp leather gloves. The study smelled faintly of gunpowder and roses. Lord Ashford lay motionless behind his mahogany desk. Blood pooled slowly across the antique Persian rug. Cole scanned the room for any missing clues. A single chess piece rested near his hand. The king had fallen, toppled from its square. Someone had planned this murder with great care. Three guests remained trapped inside the old house. Each one carried secrets worth killing for. Cole straightened her coat and studied their faces. "One of you," she said, "is lying tonight." Thunder cracked outside, rattling the ancient windowpanes. The killer stood among them, calm and silent. Cole's eyes narrowed as she began her work. The night had only just begun to unfold.
created_at"2026-07-01T07:21:03.877Z" 7/1/2026, 7:21:03 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1450
moderation_latency132
generation_time6882
tokens_prompt46
tokens_completion259
native_tokens_prompt60
native_tokens_completion349
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"
usage0.00361
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_01MfbuPoBbw7MJCvBUXtnCZm"
is_byokfalse
latency1450
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-1782890463-7sV4zkV97GZSI3YV57fh"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782890463-ze7kA41VGRTtJofZTTkA"
upstream_id"msg_01MfbuPoBbw7MJCvBUXtnCZm"
total_cost0.00361
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
30.34% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
04
19
29
38
48
58
68
78
88
98
108
118
128
138
147
158
1615
178
188
198