Run: 2026-07-09-01KX405SMGX59PK6Y1GYV74NX6

Run Details

Duration:
8.7s
Cost:
$0.017698
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 tapped the manor windows while Inspector Vale studied the body sprawled beneath the chandelier in the silent ballroom alone. Everyone claimed they heard nothing, yet muddy footprints crossed the marble floor from the locked garden door to the victim. Lady Harrow stood nearest, clutching a torn glove, her pale smile reflected strangely in the darkened mirror beside her face. The clock struck midnight again, though Vale had watched its hands stop precisely when the old financier died at nine. Outside, thunder swallowed a woman's scream, and every guest turned toward the corridor where the servants had vanished moments earlier. Vale knelt beside the corpse, noticing a silver key clenched tightly inside the dead man's bloodless left hand still warm. Then the lights failed, and in darkness someone whispered, “Inspector, you should inspect your own pocket carefully before dawn arrives.” When candles returned, the key was gone, and a fresh crimson stain marked Vale's immaculate white cuff near its button.
created_at"2026-07-09T17:52:57.496Z" 7/9/2026, 5:52:57 PM
model"openai/gpt-5.6-terra-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7958
moderation_latency(null)
generation_time8496
tokens_prompt46
tokens_completion272
native_tokens_prompt41
native_tokens_completion1173
native_tokens_completion_images0
native_tokens_reasoning971
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"
usage0.0176975
router(null)
provider_responses
0
endpoint_id"3cc89000-ae34-4dde-9c7d-5ce009c8af0b"
id"resp_0eec0f502e03a72f016a4fdff990708193a7292cbd7b21dde6"
is_byokfalse
latency239
model_permaslug"openai/gpt-5.6-terra-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783619577-l6JjSBQKcwDT8F3nZIoG"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783619577-kxH8E5GDaIuiUj68zKMZ"
upstream_id"resp_0eec0f502e03a72f016a4fdff990708193a7292cbd7b21dde6"
total_cost0.0176975
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