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Run: 2026-02-16-01KHKAAZ2XDC95NSRAAZJV67YT
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
1m 6s
Cost:
$0.027911
Provider:
OpenAI
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The storm snuffed the lighthouse as midnight swallowed the bay. Detective Mara Quinn parked, headlights dying, and listened for sirens. Instead, gulls shrieked, frantic confetti above the blackened docks tonight. A single bulb trembled outside Herriman's Fish, casting jaundiced ellipses. Inside, the floor glittered with ice and broken glass everywhere. The smell mixed ocean brine, diesel, and something copper, sweet. Mara stepped carefully, boots whispering, her flashlight combing the crates. A knife stood upright in thawing salmon, humming with flies. Beyond the counter, a body leaned against scales, eyes absent. Snow gathered on his shoulders, although there was no snow. It drifted from the freezer, shimmering like ash in moonlight. Her radio crackled; dispatch mumbled static, then someone laughed softly. She muted it, throat dry, counting footprints in melting slush. Two entered, none left; the ledger confirmed midnight deliveries stopped. On the corpse's palm, sea salt traced letters, slowly dissolving. They spelled HARBOR, though the harbor roared outside without secrets. A footprint glittered, sparkling with glass, leading toward the office. Mara touched the doorknob and felt heat beneath frost there. The lock clicked open, though the keychain lay beside him. Inside the office, photographs waited, smiling through salted fingerprints everywhere. Rain began suddenly, marching sideways, erasing everything but blood trails. And somewhere outside, the lighthouse blinked awake, as witnesses gathered.
created_at
"2026-02-16T13:31:53.705245+00:00"
2/16/2026, 1:31:53 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3902
moderation_latency
(null)
generation_time
65560
tokens_prompt
46
tokens_completion
1067
native_tokens_prompt
41
native_tokens_completion
2786
native_tokens_completion_images
0
native_tokens_reasoning
2432
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
0.02791125
router
(null)
provider_responses
0
id
"resp_057d73147c236c940169931c075b8c8190931b878e3799122f"
status
200
is_byok
false
latency
162
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248647-FNXeyrc0VIxtSEgtYDUO"
upstream_id
"resp_057d73147c236c940169931c075b8c8190931b878e3799122f"
total_cost
0.02791125
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
22
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
10
13
10
14
10
15
10
16
10
17
10
18
10
19
10
20
10
21
10