Run: 2026-03-06-01KK1HKGAQ7008VVQMDKWB2673

Run Details

Model:
GPT-5.4
Duration:
3.2s
Cost:
$0.001648
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
70.49% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed the manor windows as mourners gathered below, their black umbrellas blooming like bruised flowers across the moonlit gravel. Inside, silver candles trembled beside the coffin, while whispers circled the room and grief wore faces too carefully composed. When the clock struck midnight, Lady Vale's youngest son collapsed, crimson spreading across his waistcoat like a fresh accusation. No one moved at first, except the butler, who quietly locked every door and announced that the killer remained among us.
created_at"2026-03-06T12:22:50.974Z" 3/6/2026, 12:22:50 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency458
moderation_latency(null)
generation_time3123
tokens_prompt46
tokens_completion132
native_tokens_prompt41
native_tokens_completion103
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"
usage0.0016475
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0286084b183982630169aac71b05808197ac0b05d0dfd9f4be"
is_byokfalse
latency158
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-1772799770-spf9FoCv7IEy6wzyotiB"
upstream_id"resp_0286084b183982630169aac71b05808197ac0b05d0dfd9f4be"
total_cost0.0016475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
70.49% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
219
321