Run: 2026-09-23-01M36NYGBKJNHWNQMAFD38ZKH3

Run Details

Duration:
3.1s
Cost:
$0.000054
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 clock stopped chiming, and Inspector Vale found the host face down beside his untouched champagne glass. Rain tapped the conservatory windows while guests whispered upstairs, pretending not to notice the gardener’s muddy footprints near the door. Vale knelt beside the body, studying a silver letter opener lodged beneath the dead man’s ribs, its handle freshly polished. Then the telephone rang inside the locked study, and every witness turned toward the empty staircase without speaking another word.
created_at"2026-09-23T08:26:07.097Z" 9/23/2026, 8:26:07 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2332
moderation_latency(null)
generation_time3103
tokens_prompt46
tokens_completion134
native_tokens_prompt41
native_tokens_completion99
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"
usage0.0000536
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151967-y7EEbiBrGCzg9hGObfKO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151967-Hs2TgbjB9tjETrvCrrU0"
upstream_id"resp_0affd34d22fd4652016ab38d1f2e1c87d1aad0fbc087f445d2"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0affd34d22fd4652016ab38d1f2e1c87d1aad0fbc087f445d2"
is_byokfalse
latency442
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000536
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
sentences4
wordCounts
020
120
220
320