Run: 2026-07-09-01KX402BB77Q0EYH13S8XH41J1

Run Details

Duration:
15.2s
Cost:
$0.019607
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 polished the mansion windows while Inspector Vale studied footprints. Inside, dinner waited untouched beneath the portrait of Eleanor Grey. Her jeweled hand lay lifeless beside a teacup gone cold. Nobody spoke when the grandfather clock announced exactly midnight downstairs. Vale noticed muddy water dripping from the locked conservatory door. Yet every servant stood assembled inside the drawing room silently. Then someone screamed, and the lights vanished across the house. When candles returned, Eleanor's portrait displayed bloodstained words across it. Vale read aloud: Trust nobody before dawn, not even family. Outside, the conservatory door swung open without anyone touching it. Vale turned toward the sound, finding wet footprints approaching slowly. The footprints ended beside an empty chair, gently rocking alone.
created_at"2026-07-09T17:51:04.561Z" 7/9/2026, 5:51:04 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2061
moderation_latency(null)
generation_time15031
tokens_prompt46
tokens_completion817
native_tokens_prompt41
native_tokens_completion3261
native_tokens_completion_images0
native_tokens_reasoning3106
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"
usage0.019607
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0dedb86df71827fb016a4fdf88b5608190a53f56e9680accb7"
is_byokfalse
latency307
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-1783619464-aO1WmVZCtq72mh37Higi"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619464-KSFDrLQjkWUzo1KTwdqm"
upstream_id"resp_0dedb86df71827fb016a4fdf88b5608190a53f56e9680accb7"
total_cost0.019607
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