Run: 2026-03-18-01KM08246GE9N8FGPFY6GSG9RH

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1.8s
Cost:
$0.001435
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 manor windows. Inside, candles trembled above supper. Then screams cut through silence. Mr. Vale lay face-down, bleeding. Everyone claimed innocence, voices shaking. Detective Mara arrived before dawn.
created_at"2026-03-18T10:32:31.709Z" 3/18/2026, 10:32:31 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1712
moderation_latency(null)
generation_time1773
tokens_prompt46
tokens_completion61
native_tokens_prompt41
native_tokens_completion312
native_tokens_completion_images0
native_tokens_reasoning258
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"
usage0.00143475
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_08ade3d976d7fc1c0169ba7f3fc58481978562193ab059d84c"
is_byokfalse
latency206
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-1773829951-e4lIb5LH1DHCISwY7vpE"
upstream_id"resp_08ade3d976d7fc1c0169ba7f3fc58481978562193ab059d84c"
total_cost0.00143475
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