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Run: 2026-02-16-01KHK99D7J0W9VD6P4KC8634SC
Run Details
Model:
GPT-5 Mini
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
17.4s
Cost:
$0.003706
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
Fog hugged the harbor; lantern beams trembled against wet cobblestones. A fisherman found the body, face pale beneath cold kelp. Detective Marlow arrived, coat heavy with rain, boots muddy still. Crowds gathered at distance, umbrellas like small black flowers tonight. No blood stained the shore; only footprints and cigarette ashes. A scarf, striped and frayed, floated beside a driftwood cross. Neighbors whispered names: strangers, lovers, debts—everyone avoided admitting familiarity openly. Marlow knelt, probing the sand with fingers like careful pliers. His notebook remained dry; facts arrived slower than rumor today. Someone watched from the lee of the warehouse door silently.
created_at
"2026-02-16T13:12:45.798953+00:00"
2/16/2026, 1:12:45 PM
model
"openai/gpt-5-mini-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2557
moderation_latency
(null)
generation_time
17297
tokens_prompt
46
tokens_completion
874
native_tokens_prompt
41
native_tokens_completion
1848
native_tokens_completion_images
0
native_tokens_reasoning
1664
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
0.00370625
router
(null)
provider_responses
0
id
"resp_0223e7b26393194401699317bbb8e48190a672946eacbfb30f"
status
200
is_byok
false
latency
362
endpoint_id
"c4f66d01-20b0-4c27-a225-438ea22fda43"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-mini-2025-08-07"
api_type
"completions"
id
"gen-1771247547-QUJ55WQOklirRnqtZXod"
upstream_id
"resp_0223e7b26393194401699317bbb8e48190a672946eacbfb30f"
total_cost
0.00370625
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
97.4082%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
11
7
10
8
10
9
10