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Run: 2026-03-06-01KK1GRVVWT0A438VY15HM06ME
Run Details
Model:
GPT-5.4
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
4.6s
Cost:
$0.002233
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
97.41%
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
Rain battered Blackthorn Hall as mourners gathered for Lady Wren's funeral. Inside, candlelight trembled across portraits whose eyes seemed almost accusatory. Detective Mara Vale removed her gloves and studied every face. Grief looked rehearsed here, she thought, like lines memorized badly. A scream shattered prayers when the vicar opened the crypt. Lady Wren's coffin lay empty, its satin lining freshly torn. Then someone laughed upstairs, exactly where no guest should be. Mara reached for her notebook as thunder smothered every answer. On the staircase, wet footprints gleamed, leading upward toward darkness. Before anyone moved, the manor lights died, and something fell.
created_at
"2026-03-06T12:08:18.051Z"
3/6/2026, 12:08:18 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
476
moderation_latency
(null)
generation_time
4582
tokens_prompt
46
tokens_completion
177
native_tokens_prompt
41
native_tokens_completion
142
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
0.0022325
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_01f7baa443e570f30169aac3b21a9881948b5a38a12c260ab7"
is_byok
false
latency
157
model_permaslug
"openai/gpt-5.4-20260305"
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-1772798898-BHkAaQhHtlzMgkWH9cPL"
upstream_id
"resp_01f7baa443e570f30169aac3b21a9881948b5a38a12c260ab7"
total_cost
0.0022325
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
97.41%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
11
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10