Run: 2026-09-23-01M37HQCYCJYRZCH1D5PNN2EMN

Run Details

Duration:
17.5s
Cost:
$0.012562
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 bell above Blackthorn Hall rang thirteen times, though its ancient gears had stopped decades before the murder. Detective Mara Vale arrived beneath a storm-torn sky, carrying a letter addressed in her own handwriting from tomorrow morning. Inside the library, Lord Blackthorn lay beside the fireplace, his open eyes reflecting the stopped clock and its empty face. A silver key rested between his fingers, while every door in the house remained locked from the inside that night. The butler insisted no guest had entered since supper, yet nine damp footprints crossed the freshly polished floor behind him. Mara counted them twice before noticing that the last print pointed toward the wall beside the fireplace, not the window. From somewhere upstairs, a woman began singing the lullaby Mara remembered from a childhood she had never spoken about aloud. The butler went pale and whispered that Lady Blackthorn had been dead for twenty-seven years as of that very night. Then the letter in Mara’s pocket began to tick in perfect time with the slow footsteps approaching from behind her.
created_at"2026-09-23T16:31:34.356Z" 9/23/2026, 4:31:34 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency15988
moderation_latency(null)
generation_time17491
tokens_prompt46
tokens_completion283
native_tokens_prompt41
native_tokens_completion1248
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"
usage0.012562
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790181094-s46XVzPvz170ZyS2oddi"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790181094-EdWSXCeOtkb9r99mzljM"
upstream_id"resp_0ba69733324d6cbe016ab3fee67ccc87d1b69ae752e84306c9"
provider_responses
0
endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_0ba69733324d6cbe016ab3fee67ccc87d1b69ae752e84306c9"
is_byokfalse
latency1002
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.012562
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
119
220
320
420
520
620
720
820