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Run: 2026-02-16-01KHKA43AG1BS4F75Q9WBW94Y6
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
43.2s
Cost:
$0.025461
Provider:
OpenAI
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 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 cliffside manor as Detective Mara Quinn arrived, summoned by a midnight call and uneasy whispers alone. Inside, candles trembled like witnesses as thunder rolled, and the study door stood ajar, leaking darkness and salt into hallway. She stepped past portraits watching closely, their varnished eyes bright with accusation, and found the body near the extinguished hearthrug. The victim, publisher Lionel Craye, lay contorted, one hand clutching a fountain pen, another pointing toward a shattered carriage clock. It had stopped at midnight precisely, though thunder insisted otherwise, and seawater glittered on the rug like scattered confession beads. Mara noted two wineglasses, one smeared with lipstick, and footprints crusted with sand leading nowhere, circling the desk twice over. On the mahogany blotter lay a message, ink still wet: For truth, drown what breathes, then listen to silence carefully. Behind her, the manor sighed, and every candle guttered at once, as if the house itself withheld a heartbeat tonight.
created_at
"2026-02-16T13:27:45.710464+00:00"
2/16/2026, 1:27:45 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4486
moderation_latency
(null)
generation_time
43071
tokens_prompt
46
tokens_completion
1023
native_tokens_prompt
41
native_tokens_completion
2541
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
0.02546125
router
(null)
provider_responses
0
id
"resp_08ac771f9644035e0169931b264ef481939135050b50daa2bf"
status
200
is_byok
false
latency
186
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248422-AYzYn1z8q1RmGIQ9zjRP"
upstream_id
"resp_08ac771f9644035e0169931b264ef481939135050b50daa2bf"
total_cost
0.02546125
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
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20