Run: 2026-09-23-01M36R5TM5JD5444F0S472786Q

Run Details

Duration:
9.6s
Cost:
$0.000315
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
85.71% 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
At midnight, the manor’s clock stopped before the final chime. Inspector Vale found Lord Ashcombe face down beside the fireplace. Rain tapped windows while every guest insisted they slept upstairs. Yet fresh mud darkened the carpet beneath the conservatory door. His silver watch lay shattered, hands fixed at eleven seventeen. Vale noticed one guest wore gloves despite the roaring fire. Then the housekeeper whispered, “Someone has already searched his pockets.” The dead man’s empty palm held a single wet rose.
created_at"2026-09-23T09:05:04.142Z" 9/23/2026, 9:05:04 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4479
moderation_latency(null)
generation_time9554
tokens_prompt46
tokens_completion510
native_tokens_prompt41
native_tokens_completion621
native_tokens_completion_images0
native_tokens_reasoning516
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"completed"
service_tier"default"
usage0.0003146
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154304-BtxXwnZjRsofH17r5UnF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154304-goBOLzANTT1zdKwX5l5I"
upstream_id"resp_036f88050e0f8332016ab39640780087d1800f80aee5c671de"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_036f88050e0f8332016ab39640780087d1800f80aee5c671de"
is_byokfalse
latency1057
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0003146
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
85.71% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
010
110
210
310
410
510
620