Run: 2026-03-18-01KM0982C87X24NT1JJKSE52X3

Run Details

Model:
GPT-5.4 Mini
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
902ms
Cost:
$0.000391
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
97.79% 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 stitched the manor windows. Inside, candles trembled over portraits. Silas stood beside the staircase. His gloved hand held letters. A scream shattered the dinner. Everyone froze, then hurried upstairs. Lady Wren lay beneath chandeliers. Her necklace was gone. Her eyes stared at nothing. On the floor, fresh blood.
created_at"2026-03-18T10:53:15.029Z" 3/18/2026, 10:53:15 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency414
moderation_latency(null)
generation_time824
tokens_prompt46
tokens_completion92
native_tokens_prompt41
native_tokens_completion80
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.00039075
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0274de7c61168eb30169ba841b1a0c81939477622196dafdc3"
is_byokfalse
latency208
model_permaslug"openai/gpt-5.4-mini-20260317"
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-1773831195-UWawMlL5tP3EojgPXcEF"
upstream_id"resp_0274de7c61168eb30169ba841b1a0c81939477622196dafdc3"
total_cost0.00039075
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
97.79% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
74
85
95