Run: 2026-04-24-01KQ0NM8KG2GBN2YWSBYXQXGJA

Run Details

Duration:
11.7s
Cost:
$0.016465
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
Dense fog swallowed Blackthorn Manor. Inside, the grandfather clock stopped. Lady Vale screamed upstairs once. Guests froze beneath crystal chandeliers. Rain clawed the windows softly. Inspector Grey arrived breathless, late. Servants whispered behind gloved hands. The study door stood open. Lord Ashworth lay beside roses. Blood darkened his ivory waistcoat. One silver letter opener glittered. Everyone claimed breakfast alibis elsewhere. But one chair remained warm. Outside, ravens circled the stables. Inside, secrets began breathing again.
created_at"2026-04-24T21:16:43.003Z" 4/24/2026, 9:16:43 PM
model"openai/gpt-5.5-20260423"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10283
moderation_latency(null)
generation_time11423
tokens_prompt46
tokens_completion416
native_tokens_prompt41
native_tokens_completion542
native_tokens_completion_images0
native_tokens_reasoning427
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"
usage0.016465
router(null)
provider_responses
0
endpoint_id"58e5b336-423e-430b-a2ab-8bc353f0c51b"
id"resp_0304656a731bc2440169ebddbb2a3c8197a11a899021b9ccaa"
is_byokfalse
latency344
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-1777065403-nXCH7bdtmonLNrZkSGVh"
session_id(null)
api_type"completions"
id"gen-1777065403-EmB20ryPDrogzKKFarJu"
upstream_id"resp_0304656a731bc2440169ebddbb2a3c8197a11a899021b9ccaa"
total_cost0.016465
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
sentences15
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145