Run: 2026-03-18-01KM0AEB2W343ZSNET5P2341E0

Run Details

Model:
GPT-5.4 Mini (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
9.8s
Cost:
$0.002726
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 over silverware. Detective Mara found the body. Blood pooled beneath the piano. Nobody admitted hearing a scream. Clock hands rested at midnight. Mara studied the locked door. Somewhere nearby, someone was lying. She pocketed the note silently. It named her as heir.
created_at"2026-03-18T11:14:09.13Z" 3/18/2026, 11:14:09 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency9610
moderation_latency(null)
generation_time9757
tokens_prompt46
tokens_completion500
native_tokens_prompt41
native_tokens_completion599
native_tokens_completion_images0
native_tokens_reasoning516
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"
usage0.00272625
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0e5146db8a559cff0169ba890132b48194afc6f5353da98d99"
is_byokfalse
latency235
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-1773832449-Wbc1hq4O7kQ0uSPdPEHF"
upstream_id"resp_0e5146db8a559cff0169ba890132b48194afc6f5353da98d99"
total_cost0.00272625
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
05
15
25
35
45
55
65
75
85
95