Run: 2026-09-23-01M36NH1E4HAEMN7B1N6ZQFAZW

Run Details

Duration:
3.1s
Cost:
$0.000062
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
49.67% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, the station clock stopped, though every witness swore its hands had moved backward since the storm began. Inspector Vale found the locked office empty, except for one wet footprint crossing the carpet toward the sealed window. On the desk, beneath a dying lamp, lay the mayor’s silver watch, ticking steadily beside a glass of untouched wine. Vale lifted the watch and heard something rattling inside its case, then noticed fresh blood darkening his fingertips. Behind him, someone whispered his name, though the doorway remained empty and the corridor outside stretched into darkness.
created_at"2026-09-23T08:18:46.025Z" 9/23/2026, 8:18:46 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1956
moderation_latency(null)
generation_time2801
tokens_prompt46
tokens_completion152
native_tokens_prompt41
native_tokens_completion116
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"
usage0.0000621
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151526-CQR1DBWL0sfLlNV4QqZn"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151526-UmHIQWZvgT7awxfMnyOY"
upstream_id"resp_0268533c4d2d064f016ab38b66592487d1ade2818132d92177"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0268533c4d2d064f016ab38b66592487d1ade2818132d92177"
is_byokfalse
latency630
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000621
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
49.67% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
019
119
220
318
418