Run: 2026-07-09-01KX41095WXSN3G3CATQ68V4PS

Run Details

Duration:
1.3s
Cost:
$0.000491
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
93.36% 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 midnight. Every window glowed without warmth. Inside, portraits watched the hallway. A grandfather clock counted thirteen chimes. Then someone screamed beneath the floorboards. Vale found blood beside roses. The victim wore Vale's missing ring. Behind him, every door locked. No one had entered tonight.
created_at"2026-07-09T18:07:25.38Z" 7/9/2026, 6:07:25 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency696
moderation_latency(null)
generation_time1232
tokens_prompt46
tokens_completion100
native_tokens_prompt41
native_tokens_completion75
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"
usage0.000491
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_024e9c207082ce74016a4fe35d774881908f2e061ae382a441"
is_byokfalse
latency301
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-1783620445-Z3pFZKdJL4E59Reu0lD7"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620445-flbYmVZcbPnQ6Lvdef0A"
upstream_id"resp_024e9c207082ce74016a4fe35d774881908f2e061ae382a441"
total_cost0.000491
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
93.36% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
46
56
65
76
85
95