Run: 2026-09-23-01M36R425Y32TNVTDM12N0AJDG

Run Details

Duration:
31.8s
Cost:
$0.001703
Provider:
OpenAI

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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, the manor’s west clock stopped, while every other timepiece continued ticking beneath the storm that battered the windows. In the library, Inspector Vale found Sir Alistair Crowe facedown beside an overturned glass and a perfectly dry, unlit fireplace. His silver cufflinks were missing, but muddy footprints toward the locked conservatory matched none of the shoes worn by guests. Every witness claimed the doors had stayed bolted, yet a fresh rose lay crushed beneath the dead man’s open hand. Vale lifted it carefully, noticing black soil packed between the petals and smelling bitter almonds beneath the room’s usual polish. Then the housekeeper whispered that roses never grew here, and Vale noticed her muddy hem bore marks matching the prints. Before he could question her, the west clock chimed once, and every candle in the library guttered out without warning. In the sudden darkness, someone pressed a cold object into Vale’s palm, then disappeared while servants screamed loudly behind him.
created_at"2026-09-23T09:04:06.347Z" 9/23/2026, 9:04:06 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16241
moderation_latency(null)
generation_time31758
tokens_prompt46
tokens_completion645
native_tokens_prompt41
native_tokens_completion3397
native_tokens_completion_images0
native_tokens_reasoning3188
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"
usage0.0017026
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154246-aNjFyT1A4KF99XwXMAZe"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154246-WeuLB6wzRWEchp8xk9FW"
upstream_id"resp_0920f64b1722dbf5016ab39606789887d18ff20ff277d115a7"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0920f64b1722dbf5016ab39606789887d18ff20ff277d115a7"
is_byokfalse
latency1279
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0017026
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
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720