Run: 2026-09-23-01M37J0366DD6A1BBR6NF36XAT

Run Details

Duration:
18.0s
Cost:
$0.012612
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
95.63% 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 lighthouse keeper found a corpse beneath the stairs, although the island's only boat remained securely chained ashore. The dead man wore the mayor's coat, but his face belonged to someone who had been buried only last Tuesday. Inspector Mara Voss arrived with the tide, carrying a warrant, a lantern, and a letter addressed in her mother's handwriting. Her mother had died twenty years earlier, in that same lighthouse, behind a door nobody had ever managed to unlock. Now the door stood open, and wet footprints led from its threshold to the dead man's outstretched, accusing hand. In his fist lay a brass key, still warm, though the keeper swore he had touched nothing since discovering him. Mara turned the letter over and saw one sentence: Do not trust the person who tells you I am dead. Behind her, the keeper whispered that he had heard three sharp knocks upstairs, where the locked room held no windows. Then the bell rang once, and Mara noticed blood dripping steadily from the clapper, though nobody had recently climbed above.
created_at"2026-09-23T16:36:19.278Z" 9/23/2026, 4:36:19 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency16823
moderation_latency(null)
generation_time17920
tokens_prompt46
tokens_completion372
native_tokens_prompt41
native_tokens_completion1253
native_tokens_completion_images0
native_tokens_reasoning1034
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"
usage0.012612
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790181379-Axkx2NJz3wHofIMg9Iir"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790181379-sSzcx6h9Hm7OF8Io49i1"
upstream_id"resp_0f8ac82141e19a9a016ab40003652087d19b995df3e17731fd"
provider_responses
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endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_0f8ac82141e19a9a016ab40003652087d19b995df3e17731fd"
is_byokfalse
latency1081
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.012612
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
95.63% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
020
120
220
320
419
520
620
720
820