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Run: 2026-04-25-01KQ2E0DJ2DMX6M9JQ5FV4JEJ2
Run Details
Model:
DeepSeek V4 Pro (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
42.5s
Cost:
$0.001696
Provider:
DeepSeek
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
The old mansion loomed against the dark, stormy midnight sky. Rain hammered the windows like impatient fingers demanding urgent entry. Inside, a single candle flickered, casting long, ghostly, dancing shadows. A woman's sudden scream shattered the heavy silence like glass. The footsteps thundered down the grand staircase in frantic haste. A door flew open, revealing a body on the floor. The detective arrived, his coat dripping with the cold rain. He knelt beside the victim, checking for any faint pulse. Her lifeless eyes stared blankly at the ornate ceiling above. A single drop of blood marred the polished wooden floor. The detective noticed a torn photograph clutched in her hand. It depicted a smiling couple on a sunlit beach day. Outside, the storm raged on, indifferent to the human tragedy.
created_at
"2026-04-25T13:42:01.541Z"
4/25/2026, 1:42:01 PM
model
"deepseek/deepseek-v4-pro-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
597
moderation_latency
(null)
generation_time
42440
tokens_prompt
46
tokens_completion
1940
native_tokens_prompt
39
native_tokens_completion
1930
native_tokens_completion_images
(null)
native_tokens_reasoning
1750
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
0.001696065
router
(null)
provider_responses
0
endpoint_id
"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id
"f116f625-8ec2-4f9e-9204-8a922e66b3ed"
is_byok
false
latency
281
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-1777124521-aHnquHFyLxmNUKCYuCnB"
session_id
(null)
api_type
"completions"
id
"gen-1777124521-lpxk0gcMolSf0KjkICBT"
upstream_id
"f116f625-8ec2-4f9e-9204-8a922e66b3ed"
total_cost
0.001696065
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepSeek"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
13
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
10