Run: 2026-04-24-01KQ0PWTZ26MMVTQYVMQ4RX4SP

Run Details

Duration:
10.7s
Cost:
$0.019465
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain hammered the manor windows while midnight smothered the garden. Inspector Vale arrived as thunder swallowed the final carriage bell. Inside, the servants waited silently beside portraits filmed with dust. Lord Ashcombe lay beneath the chandelier, smiling without visible wounds. A crimson chess piece rested neatly upon his open palm. His widow clutched pearls, but her gloves were already missing. The nephew claimed prayers had detained him in the chapel. Yet wet footprints crossed the carpet from nobody's known direction. Vale noticed one clock stopped seventeen minutes before the scream. Then the corpse's pocket watch began ticking inside his fist.
created_at"2026-04-24T21:38:52.521Z" 4/24/2026, 9:38:52 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10204
moderation_latency(null)
generation_time10388
tokens_prompt46
tokens_completion532
native_tokens_prompt41
native_tokens_completion642
native_tokens_completion_images0
native_tokens_reasoning516
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"
usage0.019465
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_04b22a8915b8ae160169ebe2eca1808196862c972fa2b2e468"
is_byokfalse
latency329
model_permaslug"openai/gpt-5.5-20260423"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1777066732-UNcmwqEDUrikHGhcR2F0"
session_id(null)
api_type"completions"
id"gen-1777066732-4l7BHrWUkzQvtD56Ume2"
upstream_id"resp_04b22a8915b8ae160169ebe2eca1808196862c972fa2b2e468"
total_cost0.019465
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910