Run: 2026-07-01-01KWEAC9NGZY9E1RXVRADEQ7VK

Run Details

Duration:
7.4s
Cost:
$0.003270
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
45.59% 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 Rain hammered the old mansion's windows late that night. Detective Sarah Marsh arrived just after the storm began. The butler stood frozen, pale-faced, at the front entrance. "He's dead," he whispered, pointing toward the study door. Marsh entered slowly, noting every detail around her. Lord Ashford lay sprawled across his mahogany desk. A silver letter opener protruded from his chest. Blood had pooled dark against the antique wood grain. Six guests waited nervously in the adjoining parlor room. Someone in this house had committed cold-blooded murder. Marsh straightened her coat and began asking questions. "Nobody leaves," she said, "until I find answers." The clock on the mantel struck exactly midnight then. Outside, thunder rolled across the darkened countryside grounds. Tonight, someone's carefully constructed lies would finally unravel. The killer was still hiding somewhere in this house.
created_at"2026-07-01T07:47:58.778Z" 7/1/2026, 7:47:58 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2421
moderation_latency(null)
generation_time7362
tokens_prompt46
tokens_completion232
native_tokens_prompt60
native_tokens_completion315
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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origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.00327
router(null)
provider_responses
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endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_013E17wBQmScmEFgeawtL1ZX"
is_byokfalse
latency2421
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-1782892078-gVOpda9qA2HVozBAft1j"
session_id(null)
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api_type"completions"
id"gen-1782892078-tT48JPQ0mpG2jXePGKxn"
upstream_id"msg_013E17wBQmScmEFgeawtL1ZX"
total_cost0.00327
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
45.59% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
03
19
29
39
49
58
68
78
89
99
108
118
1217
138
148
159