Run: 2026-03-18-01KM08H9XD9ECN7F9AJZKD4R76

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
6.8s
Cost:
$0.001561
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain stitched the manor windows as midnight swallowed the hills. Inside, Detective Vale found the host dead beside a decanter. No one had heard a scream, though everyone feared silence. On the carpet, a brass key gleamed, freshly wiped clean.
created_at"2026-03-18T10:40:49.08Z" 3/18/2026, 10:40:49 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6554
moderation_latency(null)
generation_time6689
tokens_prompt46
tokens_completion334
native_tokens_prompt41
native_tokens_completion340
native_tokens_completion_images0
native_tokens_reasoning281
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"
usage0.00156075
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_03dd15bf33e843c60169ba8131270c81938dac69f0a6d42dd1"
is_byokfalse
latency238
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-1773830449-nhwerH6qtB0IkkYeK3YD"
upstream_id"resp_03dd15bf33e843c60169ba8131270c81938dac69f0a6d42dd1"
total_cost0.00156075
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
010
110
210
310