Run: 2026-03-06-01KK1J1A006YWHR51W8A3WP1TT

Run Details

Model:
GPT-5.4
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.6s
Cost:
$0.002008
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 lashed Blackthorn Manor relentlessly. Guests arrived wearing practiced smiles. Candles trembled in silver sconces. Thunder growled beyond shuttered windows. Lord Ashcombe raised his crystal. Tonight, he announced, truths emerge. Servants exchanged uneasy, fleeting glances. Lady Winterbourne concealed trembling hands. The clock struck exactly nine. A scream shattered the drawing-room. Everyone turned toward the library. Ashcombe lay beside the hearth. Blood darkened his embroidered waistcoat. One glove clutched torn vellum. The fire consumed another secret. No door had opened outward. Yet someone here killed him.
created_at"2026-03-06T12:30:23.24Z" 3/6/2026, 12:30:23 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency593
moderation_latency(null)
generation_time4526
tokens_prompt46
tokens_completion168
native_tokens_prompt41
native_tokens_completion127
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"
usage0.0020075
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_063534b45af9ca8b0169aac8df4fdc819684bacddb7734ff71"
is_byokfalse
latency242
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-1772800223-LIJ5IDKkG0hyFKnTx3t1"
upstream_id"resp_063534b45af9ca8b0169aac8df4fdc819684bacddb7734ff71"
total_cost0.0020075
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165