Run: 2026-09-23-01M37HF5V8KS1MFS5CFK1D9M51

Run Details

Duration:
22.2s
Cost:
$0.015842
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 bell above Blackthorn Manor rang thirteen times, though its rope had been cut three bitter winters earlier. Detective Mara Voss arrived beneath a moonless sky, carrying a letter that smelled faintly of smoke and expensive violet perfume. Inside, twelve dinner guests sat motionless around a table set for thirteen, their untouched soup filmed with cooling yellow grease. The thirteenth place belonged to Lord Blackthorn, whose body lay upstairs behind a heavy oak door locked from the inside. His widow insisted nobody had climbed the stairs, but mud darkened the hem of her otherwise immaculate white silk gown. Mara noticed the footprints stopped outside the study, where someone had scratched a single word into the polished oak floorboards. The word was tomorrow, and beneath it gleamed a fresh drop of blood that had not yet fully turned brown. From upstairs came a soft click, followed by the unmistakable sound of a key sliding slowly into another hidden lock.
created_at"2026-09-23T16:27:04.943Z" 9/23/2026, 4:27:04 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7068
moderation_latency(null)
generation_time22205
tokens_prompt46
tokens_completion638
native_tokens_prompt41
native_tokens_completion1576
native_tokens_completion_images0
native_tokens_reasoning1380
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"
usage0.015842
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790180824-ywyy0megrjTDASxIwl6Y"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790180824-fDHDDn935mKlZXeEG9nr"
upstream_id"resp_01079afb6edb1bc4016ab3fdd90a2887d1bf978209bd79be94"
provider_responses
0
endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_01079afb6edb1bc4016ab3fdd90a2887d1bf978209bd79be94"
is_byokfalse
latency1217
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.015842
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