Run: 2026-07-25-01KYCR2NHRAPNKE95EZP1YHYPJ

Run Details

Duration:
12.7s
Cost:
$0.023525
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
98.99% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain hadn't stopped yet. Inspector Nell Doyle arrived late. The lighthouse door stood open. Salt wind pushed her inside. Blood pooled beneath the stairs. A man lay there, facedown. His right hand clutched something. Nell knelt on wet stone. Brass keys, three of them. One key was still warm. Above her, the great lamp turned. Light swept the empty room. Someone had climbed those stairs. Someone had also come down. Her radio crackled, then died. The village slept far below. Nobody had reported this body. So who made the call? Nell lifted the man's sleeve. His wristwatch was still ticking. It read four fifteen exactly. Her own watch said midnight.
created_at"2026-07-25T13:40:18.111Z" 7/25/2026, 1:40:18 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
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cancelledfalse
latency4555
moderation_latency(null)
generation_time12632
tokens_prompt46
tokens_completion292
native_tokens_prompt60
native_tokens_completion929
native_tokens_completion_images(null)
native_tokens_reasoning126
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"
usage0.023525
router(null)
provider_responses
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endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsRxfPaY9drR71oyc59"
is_byokfalse
latency1706
model_permaslug"anthropic/claude-opus-5-20260723"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784986818-FDzp38QyERpmaBKLV1UH"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784986818-aYya3IL4GYgl0p1lwVM2"
upstream_id"msg_011CdNsRxfPaY9drR71oyc59"
total_cost0.023525
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
98.99% Matches word count n/a
neededCleanfalse
sentences22
wordCounts
05
15
25
35
45
55
65
75
85
95
106
115
125
135
145
155
165
175
185
195
205
215