Run: 2026-03-18-01KM08RFQCGZVTR7VMWZYJAZ95

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
5.8s
Cost:
$0.002168
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 dawn revealed the body. Inspector Vale stood motionless, listening to clocks swallow the silence. Everyone present had alibis, though none survived questioning unscathed today. A silver key lay beside him, polished, warm, and unfamiliar. Vale noticed fresh mud on the carpet, leading nowhere sensible. Someone in this house had murdered once, then lied twice.
created_at"2026-03-18T10:44:44.412Z" 3/18/2026, 10:44:44 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency5440
moderation_latency(null)
generation_time5550
tokens_prompt46
tokens_completion378
native_tokens_prompt41
native_tokens_completion475
native_tokens_completion_images0
native_tokens_reasoning391
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"
usage0.00216825
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0d7db2079acbfe830169ba821c79808194b433c1e63972d9b8"
is_byokfalse
latency194
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-1773830684-s0ygVLm3oPagqcV0628G"
upstream_id"resp_0d7db2079acbfe830169ba821c79808194b433c1e63972d9b8"
total_cost0.00216825
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
010
110
210
310
410
510