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Run: 2026-03-18-01KM091DMTJHK3YAGFYJ3WCK7J
Run Details
Model:
GPT-5.4 Nano
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
1.4s
Cost:
$0.000199
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
92.22%
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 as Detective Hale entered Harbor Street quietly. A lone body lay in Marlowe Alley, face-down beneath lanternlight. No witnesses spoke; the night clerk stared, shaking nervously nearby. Captain Rusk demanded answers, pacing like a restless storm overhead. Hale noticed a torn glove, glittering with ash and salt. Inside it, a pocketknife held silver scratches shaped deliberately. The victim's coat smelled faintly of lilacs and kerosene tonight. Nearby, a music box choked, then stopped without explanation. Hale knelt, counting footprints, each pair matching vanished boot sizes. Rusk whispered, "Someone wanted him dead, and watched us arrive."
created_at
"2026-03-18T10:49:37.189Z"
3/18/2026, 10:49:37 AM
model
"openai/gpt-5.4-nano-20260317"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
539
moderation_latency
(null)
generation_time
989
tokens_prompt
46
tokens_completion
179
native_tokens_prompt
41
native_tokens_completion
153
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
0.00019945
router
(null)
provider_responses
0
endpoint_id
"0c835f2e-c18d-4e8c-b245-e1e3bd08b97f"
id
"resp_014b59aeed0722840169ba834143b08195a03af9838967e9d7"
is_byok
false
latency
269
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-1773830977-14AXqxJZ7m8cI5n4czbx"
upstream_id
"resp_014b59aeed0722840169ba834143b08195a03af9838967e9d7"
total_cost
0.00019945
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
Evaluation details
Result
Evaluator
Details
Meta Data
92.22%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
11
1
10
2
10
3
10
4
10
5
9
6
10
7
9
8
10
9
10