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Run: 2026-04-25-01KQ2GR60PMHK7V1CPG8QMZ01J
Run Details
Model:
DeepSeek V4 Pro (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
10.0s
Cost:
$0.000284
Provider:
DeepSeek
Evaluation summary
Score
Evaluator
Details Link
91.36%
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 fell in slick, relentless sheets against the glass. Detective Vance arrived at the manor just before midnight sharp. A single gunshot had shattered the evening's oppressive, heavy silence. Now the grand foyer buzzed with frantic, hushed, fearful whispers. The victim, Lord Ashworth, lay crumpled near the cold fireplace. His antique clock still ticked loudly into the tense, still air. A crystal glass of brandy sat untouched on the marble ledge. One pristine white glove was conspicuously missing from his hand. Everyone in the family claimed a perfect, unbreakable alibi instantly. Yet the locked study door had no key on either side. Vance noticed a faint smudge of ash on the windowsill. It was going to be a very long, very strange night.
created_at
"2026-04-25T14:29:58.894Z"
4/25/2026, 2:29:58 PM
model
"deepseek/deepseek-v4-pro-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1050
moderation_latency
(null)
generation_time
8292
tokens_prompt
46
tokens_completion
367
native_tokens_prompt
39
native_tokens_completion
307
native_tokens_completion_images
(null)
native_tokens_reasoning
144
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.000284055
router
(null)
provider_responses
0
endpoint_id
"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id
"e4092c31-44f0-450e-8d2b-b0bef41a911b"
is_byok
false
latency
288
model_permaslug
"deepseek/deepseek-v4-pro-20260423"
provider_name
"DeepSeek"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer
(null)
request_id
"req-1777127398-HiZtsawCGQDATOX8bqVm"
session_id
(null)
api_type
"completions"
id
"gen-1777127398-owKlIFGFps4YqRQIhujr"
upstream_id
"e4092c31-44f0-450e-8d2b-b0bef41a911b"
total_cost
0.000284055
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepSeek"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
91.36%
Matches word count
n/a
neededClean
false
sentences
12
wordCounts
0
10
1
10
2
10
3
10
4
10
5
11
6
11
7
10
8
10
9
11
10
10
11
11