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Run: 2026-03-18-01KM09TE1DZTQND07157Z44EAW
Run Details
Model:
GPT-5.4 Nano (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
6.9s
Cost:
$0.000904
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
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
The rain tapped windows of Larkspur Hotel all night long. At dawn, Detective Mara Quill found manager lifeless beside mirrors. His hands clutched a key stamped with foreign lettering still. Mara noted bloodless punctures on his throat, oddly precise too. Guests gathered silently, whispering about last night's midnight performance here. Candles still burned in the lobby, defying soaked air outside. One violinist swore he heard footsteps, then sudden silence afterward. Quill asked for names, but everyone answered with practiced dread.
created_at
"2026-03-18T11:03:16.794Z"
3/18/2026, 11:03:16 AM
model
"openai/gpt-5.4-nano-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
6700
moderation_latency
(null)
generation_time
6836
tokens_prompt
46
tokens_completion
144
native_tokens_prompt
41
native_tokens_completion
717
native_tokens_completion_images
0
native_tokens_reasoning
595
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
0.00090445
router
(null)
provider_responses
0
endpoint_id
"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id
"resp_0609f84e6fa770900169ba8674dac88193af2853ff74331744"
is_byok
false
latency
206
model_permaslug
"openai/gpt-5.4-nano-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-1773831796-x4iQkk6uJeoQ1ZI8sc9E"
upstream_id
"resp_0609f84e6fa770900169ba8674dac88193af2853ff74331744"
total_cost
0.00090445
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10