Run: 2026-07-09-01KX40CQ6BVHW83ZSDCN01Q8GP

Run Details

Duration:
7.0s
Cost:
$0.007625
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain tapped against Blackwood Manor. Detective Vale arrived before dawn. Every window watched him silently. Inside, the clock had stopped. Mrs. Bell stood beside it. Her white gloves trembled visibly. She pointed toward the library. Lord Blackwood lay beneath books. Blood darkened his velvet collar. One candle still burned nearby. Vale knelt beside the body. Warm blood suggested recent violence. Yet nobody heard any struggle. Three guests waited in silence. Each possessed a private motive. Colonel Ash clenched muddy fists. Miss Crane watched the fireplace. Doctor Reed carried bitter almonds. Mrs. Bell kept smiling strangely. Then Vale found a footprint. Only one guest wore boots. The footprint faced the hallway. Vale examined the silent clock. Behind it, something had vanished. A brass key lay missing. Vale looked toward Mrs. Bell. She began crying too late. Outside, thunder shook the manor. Inside, somebody locked the doors. Vale smiled without any warmth.
created_at"2026-07-09T17:56:44.371Z" 7/9/2026, 5:56:44 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1830
moderation_latency(null)
generation_time6757
tokens_prompt46
tokens_completion624
native_tokens_prompt41
native_tokens_completion1264
native_tokens_completion_images0
native_tokens_reasoning1034
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"
usage0.007625
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_09d318bdff731a5e016a4fe0dc6edc8196b88b445900e88158"
is_byokfalse
latency215
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619804-OgCairuxhB8gj93uwJ6m"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619804-jybzm7L3GvCDL5SBEVkD"
upstream_id"resp_09d318bdff731a5e016a4fe0dc6edc8196b88b445900e88158"
total_cost0.007625
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences30
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295