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Run: 2026-02-16-01KHKABNRGV964BXG5SE6NBK4K
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
44.5s
Cost:
$0.031141
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 black. Sirens braided through distant alleys. I reached Calder House late. The butler's hands trembled slightly. He whispered the master's waiting. Footprints jeweled the entry rug. Wet wool perfumed the foyer. Lightning framed portraits like jurors. Calder lay beside the piano. His tuxedo hugged cooling silence. Blood threaded his monogrammed cuff. A glass rested, untouched, near. I noted mismatched piano keys. One ivory gleamed too new. The window latch wore scratches. Outside, tires hissed like snakes. Guests gathered, carefully measuring fear. The widow arrived without tears. Her pearls clicked like clocks. Someone finally asked about motive. I answered, motive usually laughs. But evidence never laughs twice. We started with the room. Rain darkened every questioning pause. The clocks kept uncertain time. Somebody kept time for him. And somebody killed him slowly. The piano waited for answers. Its lid mirrored every suspect. In reflection, someone avoided looking. I filed that small silence. Outside, the sirens braided back. Inside, the butler locked doors. We were finally all present. The storm took attendance again. I lifted the suspicious key. It matched the scratched latch. Our killer preferred quiet openings. So I opened every mouth. The widow blinked, pearls ticking.
created_at
"2026-02-16T13:31:55.557151+00:00"
2/16/2026, 1:31:55 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
8217
moderation_latency
(null)
generation_time
44418
tokens_prompt
46
tokens_completion
1224
native_tokens_prompt
41
native_tokens_completion
3109
native_tokens_completion_images
0
native_tokens_reasoning
2816
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
0.03114125
router
(null)
provider_responses
0
id
"resp_0ef60fd7c2c58d0d0169931c1e96b481959429f01c56eba867"
status
200
is_byok
false
latency
202
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248670-eVapBBj60ek11hmCA5Vc"
upstream_id
"resp_0ef60fd7c2c58d0d0169931c1e96b481959429f01c56eba867"
total_cost
0.03114125
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
40
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