Run: 2026-09-23-01M37HJKQQ47HWD7ATG144TNGM

Run Details

Duration:
19.8s
Cost:
$0.012622
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 church bells rang thirteen times, and everyone in Blackthorn House pretended they had heard only twelve chimes. By morning, the host lay beneath the dining table, his white gloves stained red, though the blood belonged elsewhere entirely. Inspector Mara Vale noticed the missing place setting first, then the fresh scratches beneath the dead man's silver wedding ring. No one admitted inviting a thirteenth guest, although an extra coat still dripped rainwater onto the spotless white marble floor. Outside, the gates remained locked, and the snow beyond them bore no footprints except those of the dead man's daughter. She had arrived yesterday by train, according to her mother, who now insisted the railway had closed three years ago. Then Mara found a ticket tucked inside the corpse's mouth, punched for a departure scheduled precisely thirteen minutes after midnight. On its back, written in the dead man's familiar hand, were six words: Do not let her leave again. Mara turned toward the daughter, but the girl's chair was empty, and her coat still hung beside the locked door.
created_at"2026-09-23T16:28:57.471Z" 9/23/2026, 4:28:57 PM
model"openai/gpt-6-sol-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5028
moderation_latency(null)
generation_time19792
tokens_prompt46
tokens_completion1018
native_tokens_prompt41
native_tokens_completion1254
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"
usage0.012622
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790180937-T7dpJe2WgIlYwvoVYUuT"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790180937-DDUHKDo939ScE60K4JjJ"
upstream_id"resp_0bf29fc824115043016ab3fe499dec87d1a694c3791b7bea2d"
provider_responses
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endpoint_id"1cfc7d9d-4404-4b8e-9ee4-58ae45c9dcd4"
id"resp_0bf29fc824115043016ab3fe499dec87d1a694c3791b7bea2d"
is_byokfalse
latency576
model_permaslug"openai/gpt-6-sol-20260922"
provider_name"OpenAI"
status200
total_cost0.012622
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
420
520
620
719
820