Run: 2026-07-09-01KX403VZN8YPZ58D0SXA06MY1

Run Details

Duration:
3.1s
Cost:
$0.000575
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
91.36% 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 veiled Blackthorn Manor as Detective Vale arrived before dawn. Inside, one chandelier flickered above the motionless body below. A silver knife gleamed beside the victim's outstretched, bloodless hand. No footprints marked the wet marble surrounding the locked room. Vale noticed fresh ash scattered beneath the eastern window frame. Behind him, someone quietly whispered, “The murderer remains inside this house.”
created_at"2026-07-09T17:51:54.365Z" 7/9/2026, 5:51:54 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2493
moderation_latency(null)
generation_time2957
tokens_prompt46
tokens_completion113
native_tokens_prompt41
native_tokens_completion89
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.000575
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_08e22a848e378803016a4fdfba6cec8196b66240b61159e352"
is_byokfalse
latency2242
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-1783619514-abvr9X0DbzvLOyEOZY3r"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619514-mjjtjLIApEVWVRmJSVW0"
upstream_id"resp_08e22a848e378803016a4fdfba6cec8196b66240b61159e352"
total_cost0.000575
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
91.36% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
010
19
210
310
410
511