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Run: 2026-02-16-01KHKA83WVQ7DATZKAK1S8KE1W
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1m 12s
Cost:
$0.048241
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 stitched the harbor's silence. Fog draped windows in gauze. The clock's hands refused morning. Detective Mara Finch disliked waiting. Coffee cooled beside untouched pastry. The call finally came through. Wharfmaster's voice sounded rehearsed, thin. "It's bad, you'd better hurry." She grabbed gloves and walked. Sirens braided streets with impatience. Dock fourteen waited like gallows. The body rocked with tide. Nets embraced him like penance. His suit glimmered with oil. Eyes stared, rinsed of color. A ring clung to finger. It bore a chipped lighthouse. Mara knelt, blessing the boards. She sniffed kelp and diesel. Another smell threaded between them. Copper, cloves, and something floral. Reporters gathered, gulls as chorus. The wharfmaster wouldn't meet eyes. "Name?" she asked, pen hovering. "Harlan Dykes, shipping union treasurer." A gull dropped sudden quiet. Mara noted bruises like constellations. Rope burns cuffed his wrists. Wallet dry within soggy jacket. Pockets empty, seams recently tampered. She tasted rain and questions. Patrolmen whispered about unfortunate accidents. The sea answered with thudding. She lifted his lapel gently. A smear glittered like lipstick. Not lipstick, boat flare residue. Someone signaled, not for help. "Who found him?" Mara asked. "A kid from bait shop." The kid shook like canvas. He pointed at mooring cleats. One rope was strangely pristine. Storms scuff every rope here. Someone replaced this one recently. Engines coughed on distant trawlers. A camera clicked like metronomes. Mara pocketed the chipped ring. Evidence bag rustled like surf. "You'll inform his family now?" The wharfmaster winced, then stalled. "They already know he's missing." Missing yesterday, not this morning. He lied about first sighting. Gulls tattled with greedy laughter. Mara straightened, rain finally easing. Harbor bells tolled their patience. Somewhere, a lighthouse blinked twice. Twice meant storms or warnings. She read it as promise. Someone planned this high tide. Evidence would float from hiding. She watched eddies like calendars. The sea kept strict appointments. So did careful, patient killers.
created_at
"2026-02-16T13:30:25.942437+00:00"
2/16/2026, 1:30:25 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
28169
moderation_latency
(null)
generation_time
71528
tokens_prompt
46
tokens_completion
1481
native_tokens_prompt
41
native_tokens_completion
4819
native_tokens_completion_images
0
native_tokens_reasoning
4288
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
0.04824125
router
(null)
provider_responses
0
id
"resp_0e48824ef347fb880169931ba9f71881949e5b59c0b7096565"
status
200
is_byok
false
latency
149
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248553-yJRtdsffULkENNWGALvG"
upstream_id
"resp_0e48824ef347fb880169931ba9f71881949e5b59c0b7096565"
total_cost
0.04824125
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
64
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
36
5
37
5
38
5
39
5
40
5
41
5
42
5
43
5
44
5
45
5
46
5
47
5
48
5
49
5
50
5
51
5
52
5
53
5
54
5
55
5
56
5
57
5
58
5
59
5
60
5
61
5
62
5
63
5