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Run: 2026-03-09-01KK9QRPWQ5C2TYG3A2E5PVZAR
Run Details
Model:
GPT-5.4 (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
13.5s
Cost:
$0.009643
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
Rain worried the windows while Blackthorn Manor held its breath. Inside, silver candlesticks trembled above portraits with watchful, varnished eyes. At midnight, the grandfather clock struck, then seemed ashamed afterward. Houseguests paused mid-laughter when a scream unstitched the dining room. They found Lord Wren collapsed beside dessert, throat blooming scarlet. His champagne glass glittered innocently, though almonds haunted the air. No door had opened, yet someone wiped rainwater indoors carefully. Before dawn arrived, every guest would lie, and one vanish.
created_at
"2026-03-09T16:44:28.448Z"
3/9/2026, 4:44:28 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
13189
moderation_latency
(null)
generation_time
13361
tokens_prompt
46
tokens_completion
517
native_tokens_prompt
41
native_tokens_completion
636
native_tokens_completion_images
0
native_tokens_reasoning
516
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
0.0096425
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_0249883859e90b620169aef8ec8ac48193930183b54d93edf9"
is_byok
false
latency
179
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-1773074668-jhpbMVwqxfSFpJGiRv0r"
upstream_id
"resp_0249883859e90b620169aef8ec8ac48193930183b54d93edf9"
total_cost
0.0096425
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