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Run: 2026-03-06-01KK1GFFCQG5S3N1SKJ7GKWDN5
Run Details
Model:
GPT-5.4
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
5.4s
Cost:
$0.002308
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 lashed Blackthorn Manor as mourners gathered beneath iron eaves. Inside, candlelight trembled across portraits with accusing, ancestral, watchful eyes. The clock struck midnight just as Evelyn Harrow screamed downstairs. Guests froze, teacups suspended, while thunder muffled the shattering glass. By the library hearth, Colonel Pembroke lay twisted unnaturally, dead. A silver letter opener protruded cleanly from his velvet waistcoat. No window stood open, and every door had been bolted. Yet mud glistened freshly across the Persian rug beside him. Mrs. Wren whispered prayers while Doctor Vale checked for pulse. From the gallery above, someone laughed once, then fell silent.
created_at
"2026-03-06T12:03:10.368Z"
3/6/2026, 12:03:10 PM
model
"openai/gpt-5.4-20260305"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
434
moderation_latency
(null)
generation_time
5303
tokens_prompt
46
tokens_completion
178
native_tokens_prompt
41
native_tokens_completion
147
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
0.0023075
router
(null)
provider_responses
0
endpoint_id
"9ff5625c-403f-4d7f-b895-58ac7295062c"
id
"resp_0ac717c91e0f49100169aac27e6fac819584b0654fc5331840"
is_byok
false
latency
184
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-1772798590-x08nv6OXBCUillhDSQa6"
upstream_id
"resp_0ac717c91e0f49100169aac27e6fac819584b0654fc5331840"
total_cost
0.0023075
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
10
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10