Run: 2026-03-18-01KM08GPSRQAB8T5JRDN9XDF2Y

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1.6s
Cost:
$0.001309
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 manor windows shut. Inside, candles trembled over silverware. Detective Mara found the body. Blood pooled beneath the chandelier. Everyone else had vanished silently.
created_at"2026-03-18T10:40:29.509Z" 3/18/2026, 10:40:29 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1541
moderation_latency(null)
generation_time1600
tokens_prompt46
tokens_completion50
native_tokens_prompt41
native_tokens_completion284
native_tokens_completion_images0
native_tokens_reasoning240
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"
usage0.00130875
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0c1dc8e52409d4890169ba811d90bc8190bca3073c0f30f3ce"
is_byokfalse
latency167
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-1773830429-dUI8E2MZF6bQRDreXEz9"
upstream_id"resp_0c1dc8e52409d4890169ba811d90bc8190bca3073c0f30f3ce"
total_cost0.00130875
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
05
15
25
35
45