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Run: 2026-02-16-01KHK96JNEMBMB58TW0CXGR9W2
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
37.7s
Cost:
$0.026091
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
Rain stitched the harbor with pins of glittering, malicious cold. The foghorn groaned, mourning something not yet officially dead here. Detective Mara Cruz watched gulls wheel above trawlers, cigarette burning. She listened, letting footsteps scatter secrets across the slick pier. A lamp swung feverishly, painting nervous halos on raincoats nearby. Somewhere, a radio whispered jazz that nobody remembered liking tonight. The dockmaster approached, cheeks chapped, eyes trawling her questions warily. He pointed toward Slip Thirteen, a name sailors avoided always. Behind coiled ropes, a boot jutted from tarpaulin shadows stiffly. Mara lifted canvas, and the storm exhaled stale secrets slowly. The body wore night like armor, glistening with brine unnervingly. A silver fishhook pierced his lip, threading silence through flesh. On his palm, ink bled: meet me before tide turns. Lightning spidered distant clouds, revealing faces turned politely away, watching. Someone laughed wrongly, brittleness cracking like a dropped shell near. Mara pocketed the note, feeling currents organize around her purposefully. She studied the hook, wondering which mouth withheld another truth. Sirens threaded closer, unraveling the harbor's practiced, indifferent hush slowly. Rain intensified, applauding the night's most unforgivable performance so far. Above everything, gulls screamed names nobody dared to speak aloud.
created_at
"2026-02-16T13:11:33.195906+00:00"
2/16/2026, 1:11:33 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4616
moderation_latency
(null)
generation_time
37584
tokens_prompt
46
tokens_completion
926
native_tokens_prompt
41
native_tokens_completion
2604
native_tokens_completion_images
0
native_tokens_reasoning
2304
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
0.02609125
router
(null)
provider_responses
0
id
"resp_06cf3c661c8c828b016993175efb8481969c45f5f785a0088e"
status
200
is_byok
false
latency
171
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771247454-XmdEiu9Ip3mdfA3DakKf"
upstream_id
"resp_06cf3c661c8c828b016993175efb8481969c45f5f785a0088e"
total_cost
0.02609125
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
20
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