Run: 2026-09-23-01M36R17BV7SH7F6814QHXQGFF

Run Details

Duration:
27.0s
Cost:
$0.001380
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 telephone rang inside Blackthorn House, though every wire had been severed after the storm swallowed the village. Inspector Vale arrived before dawn, carrying a damp hat, a silver flask, and the peculiar certainty that someone expected him. The front door stood open, and footprints crossed the hall, stopping beneath a portrait whose eyes someone had scratched away. Lord Ashcombe lay beside his library desk, one hand curled around a key that opened nothing anywhere in the house. No blood marked the carpet, yet the doctor said Ashcombe died from a wound inflicted after his heart had stopped. Around him, relatives gathered in silence: a widow, a nephew, a housekeeper, and a stranger wearing the dead man's ring. Vale recognized the ring immediately: he had buried its owner beneath the lake three winters earlier and then told nobody. Before he could speak, the stranger smiled, and upstairs a clock began striking thirteen, though Blackthorn House had no clocks.
created_at"2026-09-23T09:02:33.349Z" 9/23/2026, 9:02:33 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8228
moderation_latency(null)
generation_time26818
tokens_prompt46
tokens_completion623
native_tokens_prompt41
native_tokens_completion2751
native_tokens_completion_images0
native_tokens_reasoning2553
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"
usage0.0013796
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1790154153-WcnFNZyaSz6cGjKn0oqi"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790154153-To0elN7yOqNN9VrWwSnn"
upstream_id"resp_04ddeb6835f5bbe5016ab395a9796487d1b942b65d89d913bb"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_04ddeb6835f5bbe5016ab395a9796487d1b942b65d89d913bb"
is_byokfalse
latency1223
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0013796
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
sentences8
wordCounts
020
120
220
320
420
520
620
720