Run: 2026-03-18-01KM07A42GXD08H7Z3QN317EZG

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.4s
Cost:
$0.001277
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 drummed against the manor. Inside, candles shivered over portraits. Inspector Vale studied the corpse. The victim's smile seemed impossible. A silver key rested nearby. No windows were left open. Someone had sealed the chamber. Vale heard footsteps behind him.
created_at"2026-03-18T10:19:25.148Z" 3/18/2026, 10:19:25 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4194
moderation_latency(null)
generation_time4260
tokens_prompt46
tokens_completion230
native_tokens_prompt41
native_tokens_completion277
native_tokens_completion_images0
native_tokens_reasoning212
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"
usage0.00127725
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_08db6c7ba65633800169ba7c2d3e9c81958acff12d8a983d10"
is_byokfalse
latency197
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-1773829165-P7i2IARP3pibhWmIWUAr"
upstream_id"resp_08db6c7ba65633800169ba7c2d3e9c81958acff12d8a983d10"
total_cost0.00127725
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
05
15
25
35
45
55
65
75