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Run: 2026-02-16-01KHK9SZ9MPTSWC0MT60YXDP9Q
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
1m 7s
Cost:
$0.032971
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 hammered the old manor. Lightning carved knives through windows. Guests gathered, trembling with champagne. Somebody screamed beyond the stairwell. A chandelier groaned, then settled. The grandfather clock confessed midnight. They found Charles Benton sprawled. His tuxedo drank creeping shadows. A ruby wound whispered upward. Blood threaded the silk carpet. Detective Mara Quinn arrived quickly. Her umbrella shook off thunder. She tasted metal in air. Servants circled like uneasy satellites. Each face practiced porcelain calm. Someone clutched a missing cufflink. A glass lay, lipstick bruised. The piano kept breathing wrong. Mara knelt beside the corpse. She checked pockets, found rain. Footprints bled toward the library. One print staggered, slightly smaller. Windows latched from the inside. No curtains fluttered their guilt. A telephone refused to dial. Lightning swallowed the feeble signal. The generator hiccuped, then died. Candles bloomed in watchful circles. Whispers collected behind Mara's shoulder. She asked, Who invited him? Mrs. Halpert lowered her gaze. She answered, The magistrate did. The magistrate stood ghost-pale, trembling. He muttered something about debts. Thunder agreed with dull applause. Mara lifted the bent cufflink. Its emblem showed a falcon. She matched it to blood. Mrs. Halpert's sleeve hid crimson. Everyone noticed, no one breathed. Outside, sirens dreamed of arrival. Inside, secrets buttoned their throats. Mara said, Lock these doors. No one leaves this house. The murderer is among us. Rain kept time for truth.
created_at
"2026-02-16T13:22:38.039157+00:00"
2/16/2026, 1:22:38 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4235
moderation_latency
(null)
generation_time
65908
tokens_prompt
46
tokens_completion
1755
native_tokens_prompt
41
native_tokens_completion
3292
native_tokens_completion_images
0
native_tokens_reasoning
2944
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
0.03297125
router
(null)
provider_responses
0
id
"resp_03952fb6676d2f9e01699319da8a308196b4629b07cf02c50b"
status
200
is_byok
false
latency
185
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248090-xt4RIdLeNqNOr1TK21ZX"
upstream_id
"resp_03952fb6676d2f9e01699319da8a308196b4629b07cf02c50b"
total_cost
0.03297125
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
99.5191%
Matches word count
n/a
neededClean
false
sentences
46
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
6
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