Run: 2026-09-23-01M36NVMWGAV7MH3W6DVYFA7HV

Run Details

Duration:
8.6s
Cost:
$0.000355
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
100.00% 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 old Bellweather Hotel clock stopped just as Inspector Mara Vale found the bridegroom beneath the collapsed dome. His white gloves were spotless, but a silver key rested clenched inside his dead hand, marked with the name Eleanor. Across the ballroom, Eleanor stood beside an open window, watching snow erase the footprints leading away from the locked doors. Mara noticed the bride’s bouquet lying nearby, its black roses still dripping with water though no vase had broken there. Then the hotel’s telephone rang upstairs, and every guest turned toward the sealed staircase except Eleanor, who began to smile.
created_at"2026-09-23T08:24:33.43Z" 9/23/2026, 8:24:33 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5181
moderation_latency(null)
generation_time8524
tokens_prompt46
tokens_completion527
native_tokens_prompt41
native_tokens_completion702
native_tokens_completion_images0
native_tokens_reasoning577
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"
usage0.0003551
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151873-wCFigiFxjtdG5ESMdQbF"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151873-QEcNefyFNpcMIbbNl7y6"
upstream_id"resp_03d32b11ff1852df016ab38cc1838887d19e0d17de8148f45f"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_03d32b11ff1852df016ab38cc1838887d19e0d17de8148f45f"
is_byokfalse
latency665
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0003551
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
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420