Run: 2026-07-25-01KYCRATWN0TG4D8GNS390S6AD

Run Details

Duration:
15.3s
Cost:
$0.034125
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
100.00% 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 rain had washed the gravel drive completely clean again. Inspector Marlowe parked beside the fountain and studied the house. Every window on the second floor blazed with yellow light. Nobody sleeps easily inside a house that hides a corpse. The butler met him at the door without any greeting. He simply pointed upward, then turned away toward the kitchen. Marlowe climbed the staircase slowly, counting seventeen creaking wooden steps. Lady Ashcombe lay across the library carpet, still wearing pearls. Her left hand clutched a torn page of sheet music. The letter opener beside her throat belonged to her husband. Six guests waited downstairs, and one of them was lying. A clock somewhere below struck three in the empty hall. Marlowe removed his damp hat and began the long night.
created_at"2026-07-25T13:44:45.726Z" 7/25/2026, 1:44:45 PM
model"anthropic/claude-opus-5-20260723"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3928
moderation_latency(null)
generation_time15137
tokens_prompt46
tokens_completion329
native_tokens_prompt60
native_tokens_completion1353
native_tokens_completion_images(null)
native_tokens_reasoning123
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"
usage0.034125
router(null)
provider_responses
0
endpoint_id"76cb4608-f48c-483d-8da8-9957fb44244e"
id"msg_011CdNsmgphBFyAnCEzgsha2"
is_byokfalse
latency1292
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-1784987085-IDHKR7jatildgm2OSiG8"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784987085-MlEX9Gu4Phkb0KG8MvLX"
upstream_id"msg_011CdNsmgphBFyAnCEzgsha2"
total_cost0.034125
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
100.00% Matches word count n/a
neededCleanfalse
sentences13
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210