Run: 2026-04-24-01KPZTWFNW63HEEQ8EXX1F2NRY

Run Details

Duration:
4.9s
Cost:
$0.007500
Provider:
Amazon Bedrock

Evaluation summary

Score Evaluator
Details Link
94.45% 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
Rain hammered against the windows of Ravenscroft Manor that night. Detective Sarah Chen pulled her coat tighter around her shoulders. The butler had called precisely at seven thirty-two that evening. His voice had trembled through the static of the phone. Lord Ashworth was dead inside his locked private study. No one had entered or exited the room since dinner. Seven guests remained trapped within the manor by the storm. Each one harbored secrets worth killing for, Sarah suspected deeply. The heavy oak door creaked open to reveal the body. Blood pooled beneath the victim's outstretched hand on Persian carpet. A single white rose rested upon his still chest. Sarah knelt down slowly and examined the curious floral calling card. This killer wanted something more than simple revenge or money. This killer wanted everyone inside the manor to understand fear.
created_at"2026-04-24T13:29:20.841Z" 4/24/2026, 1:29:20 PM
model"anthropic/claude-4.7-opus-20260416"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1085
moderation_latency(null)
generation_time4856
tokens_prompt46
tokens_completion216
native_tokens_prompt65
native_tokens_completion287
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"
usage0.0075
router(null)
provider_responses
0
endpoint_id"0fa65117-00d9-4835-808d-9b68041d9ce4"
id"b3d8b2dd-aac4-43d9-a6e8-6b5adb840e42"
is_byokfalse
latency1085
model_permaslug"anthropic/claude-4.7-opus-20260416"
provider_name"Amazon Bedrock"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777037360-UHqQorNHWS37D7e4guS4"
session_id(null)
api_type"completions"
id"gen-1777037360-EPosov6L36G96k3RDQ4L"
upstream_id"b3d8b2dd-aac4-43d9-a6e8-6b5adb840e42"
total_cost0.0075
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
94.45% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
010
110
210
310
49
510
610
710
810
910
109
1111
1210
1310