Run: 2026-07-01-01KWE9CN8T477XK2VW7GK0XYW4

Run Details

Duration:
6.3s
Cost:
$0.002720
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
44.66% 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 library's stained windows. Detective Sarah Marsh stepped carefully around the broken glass. Blood pooled slowly beneath the professor's lifeless body. She'd seen death before, but never quite like this. The killer had left no fingerprints, no obvious clues. Books lay scattered across the mahogany desk nearby. One title caught her eye immediately: "Poisons Through History." Marsh photographed everything before the coroner's team arrived. Someone had wanted this murder to look accidental. She knew better than to trust first impressions here. The professor's glasses lay shattered near his hand. His killer, she suspected, was still in the building. Thunder rumbled outside as she began her investigation. This case would test everything she'd learned before.
created_at"2026-07-01T07:30:42.084Z" 7/1/2026, 7:30:42 AM
model"anthropic/claude-sonnet-5-20260630"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1624
moderation_latency(null)
generation_time6263
tokens_prompt46
tokens_completion205
native_tokens_prompt60
native_tokens_completion260
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"
usage0.00272
router(null)
provider_responses
0
endpoint_id"37b16f45-eeae-45f3-9b85-2137f7c6d61b"
id"msg_015DiKFpLyCacRPXP2xHPnxg"
is_byokfalse
latency1624
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-1782891042-721x0YBkxLcJYymgWRPR"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1782891042-U3Zty0NUIpbI1MKdCVzY"
upstream_id"msg_015DiKFpLyCacRPXP2xHPnxg"
total_cost0.00272
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
44.66% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
04
19
29
38
49
59
68
717
88
99
108
119
128
138