Run: 2026-03-18-01KM0A1VFJKSKWESRGVWM8SWGY

Run Details

Model:
GPT-5.4 Mini (Reasoning, Low)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.9s
Cost:
$0.001264
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
Fog swallowed Blackthorn Manor whole. At midnight, the bells stopped. Detective Mara found the body. Blood darkened the marble staircase. No windows were left open. Yet a candle still flickered. Someone else remained inside tonight.
created_at"2026-03-18T11:07:19.934Z" 3/18/2026, 11:07:19 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3676
moderation_latency(null)
generation_time3756
tokens_prompt46
tokens_completion202
native_tokens_prompt41
native_tokens_completion274
native_tokens_completion_images0
native_tokens_reasoning215
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"
usage0.00126375
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0a938959b6005fa50169ba8767ff208190be48f080766dd69c"
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-1773832039-X8Dl93X7kigVggjOH8eU"
upstream_id"resp_0a938959b6005fa50169ba8767ff208190be48f080766dd69c"
total_cost0.00126375
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
05
15
25
35
45
55
65