Run: 2026-09-29-01M3P2HCK9Q2CHR5JAXYVQ1HW9

Run Details

Duration:
15.1s
Cost:
$0.021314
Provider:
Claude Platform on AWS

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
Rain hammered Blackwood Manor on the night Lord Ashford died. Inspector Mara Quinn arrived at midnight, soaked to the bone. The butler met her at the door, pale and trembling. His Lordship is in the library, madam, and quite dead. Mara followed him down a corridor lined with gilded portraits. Inside, the body lay sprawled beside a shattered crystal decanter. The door was locked from the inside, the butler insisted. Mara knelt and noticed a silver button in his fist. She remembered the guests downstairs; every jacket had been buttoned. Someone in this house was lying; Mara would discover who.
created_at"2026-09-29T07:54:45.231Z" 9/29/2026, 7:54:45 AM
model"anthropic/claude-sonnet-5.5-20260928"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3908
moderation_latency(null)
generation_time15028
tokens_prompt46
tokens_completion420
native_tokens_prompt62
native_tokens_completion2119
native_tokens_completion_images(null)
native_tokens_reasoning1906
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"
usage0.021314
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790668485-QSFJD7DWGuRrKmvIawT6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790668485-xyTmJxKFz9JxGLGPn9gq"
upstream_id"msg_011CfXNU5WYZX1Q8Y1MFAbV3"
provider_responses
0
endpoint_id"99aaad94-923b-4fc1-b763-271ed5486f7a"
id"msg_011CfXNU5WYZX1Q8Y1MFAbV3"
is_byokfalse
latency665
model_permaslug"anthropic/claude-sonnet-5.5-20260928"
provider_name"Claude Platform on AWS"
status200
total_cost0.021314
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910