Run: 2026-03-18-01KM09QPS762B9EB1CE8SGXMRY

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
8.4s
Cost:
$0.001975
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 mansion windows shut. Inside, a scream severed dinner. Silverware froze in guilty hands. Inspector Vale arrived, eyes cold. Someone had murdered Mr. Black. Nobody noticed the missing key.
created_at"2026-03-18T11:01:47.444Z" 3/18/2026, 11:01:47 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency8218
moderation_latency(null)
generation_time8300
tokens_prompt46
tokens_completion289
native_tokens_prompt41
native_tokens_completion432
native_tokens_completion_images0
native_tokens_reasoning380
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"
usage0.00197475
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_09d4436bc02fdf9f0169ba861b828c81958a425839ff6ba8f8"
is_byokfalse
latency222
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-1773831707-jI7BfcHAqmzOsiIi5HhM"
upstream_id"resp_09d4436bc02fdf9f0169ba861b828c81958a425839ff6ba8f8"
total_cost0.00197475
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
05
15
25
35
45
55