Run: 2026-04-24-01KQ0NEE0NAYK52J563YFPMY6V

Run Details

Duration:
10.9s
Cost:
$0.015985
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain bruised the midnight windows. Inspector Hale arrived without sirens. The manor waited, breathless inside. Every candle trembled, starving softly. Lady Voss lay beneath roses. Her pearls circled purple fingerprints. Guests whispered behind crystal glasses. No one mentioned locked doors. A clock stopped at twelve. Blood darkened the piano keys. Hale noticed mudless bootprints nearby. Then the dead woman laughed.
created_at"2026-04-24T21:13:31.932Z" 4/24/2026, 9:13:31 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10399
moderation_latency(null)
generation_time10662
tokens_prompt46
tokens_completion418
native_tokens_prompt41
native_tokens_completion526
native_tokens_completion_images0
native_tokens_reasoning436
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"
usage0.015985
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_060bd6de35c9a5f10169ebdcfc037c8195bee07e9b46275fc6"
is_byokfalse
latency239
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-1777065211-kcoSF9y6kuJBaX2J7Hfu"
session_id(null)
api_type"completions"
id"gen-1777065211-F9519OhnQwcKkjEANNiR"
upstream_id"resp_060bd6de35c9a5f10169ebdcfc037c8195bee07e9b46275fc6"
total_cost0.015985
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
sentences12
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115