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Run: 2026-02-16-01KHKA29EAJC27H982PK50BF5M
Run Details
Model:
GPT-5
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
38.0s
Cost:
$0.014991
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 needles the cobblestones as midnight tolls across Grayhaven tonight. Detective Mara Quinn waits beneath gaslight, watching shuttered windows breathe. The sea exhales rot, carrying whispers from the vagrant pier. Church bells falter, then choke, as footsteps hesitate behind her. She turns slowly, coat creaking, eyes slicing alleys for movement. Only the cat remains, tail scribbling questions over broken glass. Then a scream unspools, thin silk tearing across the harbor. Mara runs uphill, boots drumming warnings through ribs and rain. The mansion's lantern yawns open, swallowing her shadow like tide. On marble stairs lies Lord Halvern, throat red, puzzle begun.
created_at
"2026-02-16T13:26:41.674408+00:00"
2/16/2026, 1:26:41 PM
model
"openai/gpt-5-2025-08-07"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
14021
moderation_latency
(null)
generation_time
37743
tokens_prompt
46
tokens_completion
950
native_tokens_prompt
41
native_tokens_completion
1494
native_tokens_completion_images
0
native_tokens_reasoning
1344
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
0.01499125
router
(null)
provider_responses
0
id
"resp_06341aeb9e4f4abb0169931aeb07f0819581573122e719ecbf"
status
200
is_byok
false
latency
158
endpoint_id
"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name
"OpenAI"
model_permaslug
"openai/gpt-5-2025-08-07"
api_type
"completions"
id
"gen-1771248362-4Qh3NyK5bZuy6NDnYRGl"
upstream_id
"resp_06341aeb9e4f4abb0169931aeb07f0819581573122e719ecbf"
total_cost
0.01499125
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
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10