Run: 2026-07-09-01KX40C6VFSRF1ENNRX3CEM3NB

Run Details

Duration:
21.3s
Cost:
$0.057865
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, Inspector Mara Venn arrived at Blackthorn Manor beneath rain that sounded like fingernails scratching a coffin lid shut. Inside, twelve dinner guests waited beside a dying fire, each guarding silence with the rigid poise of a practiced liar. Lord Blackthorn lay across the chessboard table, his white shirt blooming crimson around a knife buried deeply in his chest. On the board, every black piece stood upright, while the white king rested obscenely inside the dead man's open mouth. Mara removed her wet gloves and noticed thirteen place settings, although only twelve frightened guests occupied the room before her. Mara asked who was missing, and somewhere above them, a floorboard answered with one slow, deliberate creak from the darkness. Nobody spoke, but the youngest guest, Clara Vale, stared toward the locked library door and began trembling violently without explanation. Then the grandfather clock struck thirteen, and Lord Blackthorn's corpse opened its eyes just before every candle suddenly went dark.
created_at"2026-07-09T17:56:27.639Z" 7/9/2026, 5:56:27 PM
model"openai/gpt-5.6-sol-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17373
moderation_latency(null)
generation_time20627
tokens_prompt46
tokens_completion513
native_tokens_prompt41
native_tokens_completion1922
native_tokens_completion_images0
native_tokens_reasoning1719
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"
usage0.057865
router(null)
provider_responses
0
endpoint_id"a54c5de0-89bf-4ad7-a212-cf977eed918a"
id"resp_0c56dc2b2725ca52016a4fe0cbb6788194abcf238cf73d0058"
is_byokfalse
latency202
model_permaslug"openai/gpt-5.6-sol-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619787-P73dD7Ev9RR7tj4Tr4s5"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619787-fQhlNwuT1ewiwSGcJ7u1"
upstream_id"resp_0c56dc2b2725ca52016a4fe0cbb6788194abcf238cf73d0058"
total_cost0.057865
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

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