Run: 2026-03-09-01KKAC8P4T8FPKRH7EJGNJ0BHD

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.7s
Cost:
$0.005908
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 worried the manor windows. Inside, candles shivered above silver. Guests whispered through velvet-shadowed corridors. At midnight, Lady Harrow screamed. Her champagne glass kissed marble. Red spread beneath broken crystal. No clock admitted the moment. Colonel Vale locked every door. Somewhere, a violin kept playing. Detective Crowe removed his gloves. He smiled at terrified faces. Murder, he murmured, hates silence.
created_at"2026-03-09T22:42:43.492Z" 3/9/2026, 10:42:43 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7475
moderation_latency(null)
generation_time7639
tokens_prompt46
tokens_completion120
native_tokens_prompt41
native_tokens_completion387
native_tokens_completion_images0
native_tokens_reasoning283
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0059075
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0729a031e33d1b020169af4ce390b08190982eeaca826d6e26"
is_byokfalse
latency209
model_permaslug"openai/gpt-5.4-20260305"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773096163-V44snIJthK7MLDm2ysHL"
upstream_id"resp_0729a031e33d1b020169af4ce390b08190982eeaca826d6e26"
total_cost0.0059075
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

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