Run: 2026-07-09-01KX403X814PZGKAEBSJKNFHTM

Run Details

Duration:
9.7s
Cost:
$0.005609
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched silver lines across the manor's dark windows tonight. Inside, Inspector Vale discovered the body beneath grandfather's stopped clock. A single red glove rested beside the victim's outstretched hand. No footprints disturbed the dust surrounding the locked library door. Vale noticed every portrait faced inward, watching the silent corpse. Behind him, someone whispered, "You should have stayed away forever." The grandfather clock suddenly chimed thirteen, then fell strangely silent. Vale examined the corpse, finding no wound, only unnatural frost. A hidden music box began playing the victim's childhood lullaby. Then the library door unlocked itself with a soft click. Vale raised his revolver, facing three identical shadows behind him. Only one shadow moved, and it wore the red glove.
created_at"2026-07-09T17:51:55.656Z" 7/9/2026, 5:51:55 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2277
moderation_latency(null)
generation_time9519
tokens_prompt46
tokens_completion594
native_tokens_prompt41
native_tokens_completion928
native_tokens_completion_images0
native_tokens_reasoning771
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"
usage0.005609
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0eacf9b106957026016a4fdfbbbd8081959c18f38f5a779aa3"
is_byokfalse
latency261
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-1783619515-UjgIDguo4CO5g6qR4R3P"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619515-hSs2fvtnFiMPYhU8xbMR"
upstream_id"resp_0eacf9b106957026016a4fdfbbbd8081959c18f38f5a779aa3"
total_cost0.005609
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
sentences12
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110