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Run: 2026-03-18-01KM079VEF828DZ1M05QRBMBRH
Run Details
Model:
GPT-5.4 Mini
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.3s
Cost:
$0.000679
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
92.13%
Matches word count
(details)
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 worried the manor windows as Eleanor arrived, clutching the summons that had promised answers and delivered only dread tonight. Inside, the chandeliers glowed weakly, illuminating portraits whose painted eyes followed her toward the library, where silence waited hungrily alone. Mr. Vale lay beside the fireplace, one hand outstretched toward a shattered decanter, his expression fixed in astonished accusation forever. Detective Mara Quinn knelt first, noting the blood, the overturned chessboard, and the locked door that denied any escape route. Then she saw Eleanor, pale and shaking, in the doorway, and asked quietly who had discovered the body here.
created_at
"2026-03-18T10:19:16.314Z"
3/18/2026, 10:19:16 AM
model
"openai/gpt-5.4-mini-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
410
moderation_latency
(null)
generation_time
1216
tokens_prompt
46
tokens_completion
175
native_tokens_prompt
41
native_tokens_completion
144
native_tokens_completion_images
0
native_tokens_reasoning
0
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
0.00067875
router
(null)
provider_responses
0
endpoint_id
"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id
"resp_09fc071263cc36310169ba7c245fe48196ad6907d74fb684ee"
is_byok
false
latency
184
model_permaslug
"openai/gpt-5.4-mini-20260317"
provider_name
"OpenAI"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer
(null)
api_type
"completions"
id
"gen-1773829156-ZMuCbRTBwotS67r2QwFy"
upstream_id
"resp_09fc071263cc36310169ba7c245fe48196ad6907d74fb684ee"
total_cost
0.00067875
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
92.13%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
19