Run: 2026-03-09-01KKACB1MBPT82CE425XT3NHHZ

Run Details

Model:
GPT-5.4 (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
8.8s
Cost:
$0.007077
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 lacquered the manor windows. Inside, dinner candles trembled uneasily. Guests whispered above clinking silver. Lady Harrow smiled without warmth. Then the grandfather clock groaned. A scream split the waltz. Champagne shattered across marble tiles. Lord Penmere lay beneath portraits. A jeweled knife jutted upward. And every smile immediately vanished. The storm applauded from outside.
created_at"2026-03-09T22:44:00.789Z" 3/9/2026, 10:44:00 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8553
moderation_latency(null)
generation_time8660
tokens_prompt46
tokens_completion343
native_tokens_prompt41
native_tokens_completion465
native_tokens_completion_images0
native_tokens_reasoning378
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"
usage0.0070775
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0bc2fefd94ac03240169af4d30dde881978a6a42d439e7e9ae"
is_byokfalse
latency224
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-1773096240-OXozc8swtIdQxlfSfAYw"
upstream_id"resp_0bc2fefd94ac03240169af4d30dde881978a6a42d439e7e9ae"
total_cost0.0070775
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
05
15
25
35
45
55
65
75
85
95
105