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Run: 2026-03-06-01KK1H37N94QZBYXGQ1B9V838C
Run Details
Model:
GPT-5.4
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
4.3s
Cost:
$0.001662
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
80.33%
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
At midnight, Blackthorn Manor loomed above the cliffs, its windows blazing like watchful eyes through the storm's relentless silver rain. Guests arrived in silence, carrying secrets heavier than their soaked coats, while thunder rolled across the sea like judgment. Inside, the grandfather clock struck twelve, and Lady Wren collapsed beside the hearth, a ruby-handled letter opener buried deep. No one screamed at first; they only stared, counting heartbeats, as blood threaded slowly between marble tiles toward polished shoes.
created_at
"2026-03-06T12:13:57.808Z"
3/6/2026, 12:13:57 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
423
moderation_latency
(null)
generation_time
4248
tokens_prompt
46
tokens_completion
135
native_tokens_prompt
41
native_tokens_completion
104
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
0.0016625
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_08b6d87f2331f3d50169aac505deb0819682efb9cc385c656c"
is_byok
false
latency
175
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-1772799237-fd6mTvVCjQSYjI5shoJQ"
upstream_id
"resp_08b6d87f2331f3d50169aac505deb0819682efb9cc385c656c"
total_cost
0.0016625
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
80.33%
Matches word count
n/a
neededClean
false
sentences
4
wordCounts
0
20
1
19
2
19
3
20