Run: 2026-07-09-01KX418AFEB31Y20DC30C5YNAV

Run Details

Duration:
1.7s
Cost:
$0.000515
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
95.58% 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 the manor windows softly. Detective Vale entered through shadows. Everyone gathered inside the library. The fireplace cast trembling golden light. Lord Ashbury lay beside bookshelves. His silver watch had stopped. A crimson thread clung nearby. Nobody spoke above the storm. Vale studied every frightened face. Then someone locked the door.
created_at"2026-07-09T18:11:48.854Z" 7/9/2026, 6:11:48 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency805
moderation_latency(null)
generation_time1611
tokens_prompt46
tokens_completion100
native_tokens_prompt41
native_tokens_completion79
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"
usage0.000515
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_0a4e1e45a144d7af016a4fe464ed6c819491c2b2c7800440ba"
is_byokfalse
latency215
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-1783620708-rNcKcsL0uSHxe5Qi4U0U"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620708-ea5W6o99v2QyQuWpPoT0"
upstream_id"resp_0a4e1e45a144d7af016a4fe464ed6c819491c2b2c7800440ba"
total_cost0.000515
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
95.58% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
06
15
25
36
45
55
65
75
85
95