Run: 2026-03-18-01KM08AAJTCVGT174DFFSSZN17

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
9.0s
Cost:
$0.003365
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 stitched the mansion windows. Inside, candles trembled like witnesses. The countess lay dead upstairs. No one heard a scream. Detective Vale arrived before dawn. He carried notebooks and regrets. Footprints crossed the polished floor. Someone nearby was too calm. The clock began to strike. Then the lights went out.
created_at"2026-03-18T10:37:00.392Z" 3/18/2026, 10:37:00 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8805
moderation_latency(null)
generation_time8868
tokens_prompt46
tokens_completion481
native_tokens_prompt41
native_tokens_completion741
native_tokens_completion_images0
native_tokens_reasoning661
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"
usage0.00336525
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0c7fe95959ffa2550169ba804c754881968609aa1c6dfb92e1"
is_byokfalse
latency181
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-1773830220-QmDyB1bqhbKz1Dtg6dwg"
upstream_id"resp_0c7fe95959ffa2550169ba804c754881968609aa1c6dfb92e1"
total_cost0.00336525
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