Run: 2026-03-18-01KM08SDJJQGA6TR034EBXWYAG

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
2.4s
Cost:
$0.002128
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 slicked the manor's windows. Inside, silence clung to portraits. Detective Vale lifted the latch. A scream had already faded. He found the body downstairs. Candles trembled beside the staircase. Blood pooled under one hand. No footprints marred the hallway. Yet everyone claimed innocence upstairs. Vale smiled; lies always surfaced.
created_at"2026-03-18T10:45:14.973Z" 3/18/2026, 10:45:14 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2218
moderation_latency(null)
generation_time2363
tokens_prompt46
tokens_completion96
native_tokens_prompt41
native_tokens_completion466
native_tokens_completion_images0
native_tokens_reasoning382
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"
usage0.00212775
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_08a51bc724efa9fe0169ba823b0a8c8194853bfab0f1683232"
is_byokfalse
latency197
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-1773830714-xe2zLeJa4ZYmjf95A7Lu"
upstream_id"resp_08a51bc724efa9fe0169ba823b0a8c8194853bfab0f1683232"
total_cost0.00212775
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95