Run: 2026-09-23-01M36P2Z1V82QTFRZ00GK0S6FZ

Run Details

Duration:
2.1s
Cost:
$0.000035
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
84.45% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Detective Mara Venn found the body beneath the ballroom chandelier. Rain tapped against windows while guests whispered near the doorway. A silver knife rested beside the victim’s open hand. No footprints crossed the polished floor except Mara’s own. Then someone laughed upstairs, where every room stood empty.
created_at"2026-09-23T08:28:33.218Z" 9/23/2026, 8:28:33 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2067
moderation_latency(null)
generation_time2111
tokens_prompt46
tokens_completion80
native_tokens_prompt41
native_tokens_completion61
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"
usage0.0000346
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790152113-LaELqC0DznnImUWE5fK7"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790152113-TCQC3EbbrXlnXTLWGOYk"
upstream_id"resp_0528e83a787fe630016ab38db14d7c87d19b02bf533712aac5"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0528e83a787fe630016ab38db14d7c87d19b02bf533712aac5"
is_byokfalse
latency901
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000346
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
84.45% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
010
110
29
39
49