NC Bench
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Run: 2026-02-16-01KHKB3QSMEH811N060S2TJ85M
Run Details
Model:
GPT-5.2
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
11.5s
Cost:
$0.009270
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 alley shut behind Detective Mara Voss tonight. A silver watch ticked beneath garbage, still warm, accusingly there. The victim lay facedown, coat pockets emptied, keys missing, strangely. Streetlights flickered, revealing blood on brick like dark handwriting again. Mara knelt, smelled lilacs, then heard footsteps pause nearby softly. A pale woman whispered, 'He wasn't robbed; he was searched.' Before Mara questioned her, the woman vanished into steaming shadows. On the watch, a name was engraved: 'Caldwell,' underlined twice. Mara pocketed it, knowing time itself had just lied tonight.
created_at
"2026-02-16T13:44:31.117283+00:00"
2/16/2026, 1:44:31 PM
model
"openai/gpt-5.2-20251211"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5946
moderation_latency
(null)
generation_time
10880
tokens_prompt
46
tokens_completion
443
native_tokens_prompt
41
native_tokens_completion
657
native_tokens_completion_images
0
native_tokens_reasoning
513
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
0.00926975
router
(null)
provider_responses
0
id
"resp_0635e86cc6d820420169931f3323b8819785f9308c0def80ab"
status
200
is_byok
false
latency
284
endpoint_id
"f00142c2-6a93-49ce-9e36-5593b904ce3b"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5.2-20251211"
api_type
"completions"
id
"gen-1771249459-rxK1hKDOWdYnxrm6eoDN"
upstream_id
"resp_0635e86cc6d820420169931f3323b8819785f9308c0def80ab"
total_cost
0.00926975
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
9
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10