Run: 2026-03-09-01KK9QJ22TGPNBS73W1E2587DG

Run Details

Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
11.0s
Cost:
$0.008892
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. Dinner candles shivered without wind. Lady Vale slumped over pudding. Her pearls floated in custard. Colonel Ash dropped his spoon. Nobody moved for several breaths. On her wrist, ink glistened. Three letters named one guest. Detective Grey smiled, then paled.
created_at"2026-03-09T16:40:50.532Z" 3/9/2026, 4:40:50 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10740
moderation_latency(null)
generation_time10899
tokens_prompt46
tokens_completion386
native_tokens_prompt41
native_tokens_completion586
native_tokens_completion_images0
native_tokens_reasoning516
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"
usage0.0088925
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_07b3f294f15a959d0169aef81296b881968753a7d76408f243"
is_byokfalse
latency160
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-1773074450-plCc7RwYwnlj8NIsDfHR"
upstream_id"resp_07b3f294f15a959d0169aef81296b881968753a7d76408f243"
total_cost0.0088925
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
05
15
25
35
45
55
65
75
85