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Run: 2026-02-16-01KHKB441HDDP7QY1Q78DYJ3ZA
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1m 5s
Cost:
$0.054451
Provider:
OpenAI
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
Messages
Meta
AI
Rain needled the quiet harbor. The lighthouse blinked, then failed. Detective Mara Hart stepped off. Her coat drank the storm. The manor loomed above breakers. Windows watched like narrowed eyes. Inside, a clock stopped abruptly. Voices hushed to frightened whispers. The butler met her breathless. "This way," he finally said. The study smelled of gunpowder. Books lay strewn like casualties. A cigar smoldered, unattended, accusing. Blood threaded the Persian rug. The banker rested, eyes open. His cufflinks glinted like bait. Window latches held, paint cracking. A single footprint faced outward. The safe hung slightly ajar. No cash, only legal documents. A letterhead named Archer Shipping. The widow clutched her pearls. Rainwater jeweled her shaking hands. Nightly, he locked everything tight. Mara noted trembling, not tears. The maid lingered too near. Her shoes tracked sandy grit. "Beach gate broken," she murmured. Lightning mapped the widow's face. The fireplace ash held crescents. Fingers searched for pressed switches. A panel clicked, then yielded. Behind, a narrow passage breathed. Somewhere, a phone kept ringing. A voice rasped, "Check wrists." The gunshot masked strangled struggle.
created_at
"2026-02-16T13:45:37.166427+00:00"
2/16/2026, 1:45:37 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
7602
moderation_latency
(null)
generation_time
65185
tokens_prompt
46
tokens_completion
1202
native_tokens_prompt
41
native_tokens_completion
5440
native_tokens_completion_images
0
native_tokens_reasoning
5120
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"completed"
usage
0.05445125
router
(null)
provider_responses
0
id
"resp_06319c132bb289d00169931f3f9fb081939249d162c769cf37"
status
200
is_byok
false
latency
322
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771249471-Fve7nokTkFY6309WD2Rw"
upstream_id
"resp_06319c132bb289d00169931f3f9fb081939249d162c769cf37"
total_cost
0.05445125
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Matches word count
n/a
neededClean
false
sentences
36
wordCounts
0
5
1
5
2
5
3
5
4
5
5
5
6
5
7
5
8
5
9
5
10
5
11
5
12
5
13
5
14
5
15
5
16
5
17
5
18
5
19
5
20
5
21
5
22
5
23
5
24
5
25
5
26
5
27
5
28
5
29
5
30
5
31
5
32
5
33
5
34
5
35
5