Run: 2026-10-05-01M46BNH12CC4T6WMBKJ28WS7V

Run Details

Duration:
27.7s
Cost:
$0.010482
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
Rain battered the windows of Blackthorn Hall as Inspector Vale arrived, carrying a telegram that smelled faintly of burned lavender. Inside, seven guests stood around the dining table, staring at their host, whose untouched soup had already begun to cool. Sir Edmund sat upright beneath the chandelier, a pearl hatpin protruding from his throat like an accusation nobody would acknowledge. The housekeeper insisted every door had remained locked since dinner, although muddy footprints crossed the carpet toward an empty fireplace. Vale removed his gloves slowly, noticing that each guest watched his hands rather than the dead man beside the candles. Above them, the grandfather clock struck thirteen, and Lady Blackthorn whispered that it had stopped working three long winters ago. He unfolded the telegram again, reading the message Sir Edmund had sent six hours before his death was first discovered. The message named no suspect, offered no explanation, and ended with a warning written in a different, distinctly childish hand. “Whatever you are told tonight, Inspector, do not believe my wife when she says that she has never met you.” Lady Blackthorn lifted her veil, and Vale recognized the woman whose funeral he had attended on a cloudless April morning.
created_at"2026-10-05T15:42:08.958Z" 10/5/2026, 3:42:08 PM
model"openai/gpt-6.1-sol-20260929"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13348
moderation_latency(null)
generation_time27592
tokens_prompt46
tokens_completion634
native_tokens_prompt41
native_tokens_completion1040
native_tokens_completion_images0
native_tokens_reasoning799
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"
usage0.010482
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791214928-bYgQqqEEz1IA82LZmhoG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791214928-OVv5mMYvARRNs7rw61zU"
upstream_id"resp_0d7ef2dcd4d56370016ac3c55119a887d192c4dfba322ac4c6"
provider_responses
0
endpoint_id"dfb9d5c3-63f9-4263-8b78-4fa97dcb3d5e"
id"resp_0d7ef2dcd4d56370016ac3c55119a887d192c4dfba322ac4c6"
is_byokfalse
latency389
model_permaslug"openai/gpt-6.1-sol-20260929"
provider_name"OpenAI"
status200
total_cost0.010482
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
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920