Run: 2026-07-09-01KX41NBEMCMG16W7ZNXZFDMN4

Run Details

Duration:
1.3s
Cost:
$0.000527
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
97.99% 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 softly against windowpanes. Detective Vale entered without knocking. Everyone stopped breathing at once. A corpse lay beneath chandeliers. Blood darkened the polished marble. Nearby, champagne glasses remained untouched. The victim’s eyes stared upward. Vale noticed one missing cufflink. Someone whispered, “The doors were locked.” Thunder swallowed the answering silence. Then every clock struck midnight.
created_at"2026-07-09T18:18:55.835Z" 7/9/2026, 6:18:55 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency603
moderation_latency(null)
generation_time1200
tokens_prompt46
tokens_completion115
native_tokens_prompt41
native_tokens_completion81
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"
usage0.000527
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0c2f880ad0411279016a4fe60fec0c819092d64e97913650e8"
is_byokfalse
latency245
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-1783621135-Tnhcv2cPTqLdnDBrpbuK"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783621135-hlS6f6UpuanyYItelbUu"
upstream_id"resp_0c2f880ad0411279016a4fe60fec0c819092d64e97913650e8"
total_cost0.000527
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
97.99% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
05
15
25
35
45
55
65
75
86
95
105