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Run: 2026-09-03-01M1KAVVWR94V0C5DXQ7F7W3WK
Run Details
Model:
DeepSeek V4 Pro 0813 (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
1m 4s
Cost:
$0.018732
Provider:
SiliconFlow
Evaluation summary
Score
Evaluator
Details Link
90.00%
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 manor stood silent beneath the starless midnight sky. Detective Eleanor Voss stepped through the creaking oak front door. Her flashlight beam sliced across the dust-filled grand hallway's gloom. A single crystal chandelier swayed though no wind stirred inside. The faint metallic scent of fresh blood hung heavy everywhere. She crouched beside the body sprawled near the marble fireplace. His dead fingers still clutched a torn, bloodstained playing card. The card was the king of hearts, bent nearly double. Eleanor frowned and pulled her wool coat tighter around herself. Nobody else had entered or left the locked manor tonight. But someone had killed Lord Ashford in his own study. The study door was bolted from the inside, she realized. A single window stood open just a crack behind him. The drop to the frozen garden below was thirty feet. She turned to the butler trembling in the shadowed doorway. "Where is everyone who was in the house tonight, then?" The butler swallowed hard and wrung his pale, bony hands. "All six guests are in the dining room, Detective, waiting." Eleanor's eyes narrowed as she studied the butler's twitching face. His left cuff bore a dark stain that resembled port. But port did not smell like iron in cold air. She said nothing, only nodded and stepped past him softly.
created_at
"2026-09-03T09:51:10.247Z"
9/3/2026, 9:51:10 AM
model
"deepseek/deepseek-v4-pro-20260813"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
979
moderation_latency
(null)
generation_time
64399
tokens_prompt
46
tokens_completion
4763
native_tokens_prompt
118
native_tokens_completion
4691
native_tokens_completion_images
(null)
native_tokens_reasoning
4415
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"
service_tier
(null)
usage
0.01873212
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer
(null)
request_id
"req-1788429070-pODskENZu7o5N3GwjWXu"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1788429070-F44UJLVfm6uPIy2q5Akm"
upstream_id
"chatcmpl-5e8ad9fb-40a7-4024-83a2-fe2d7cceaccf"
provider_responses
0
endpoint_id
"65367950-3b6c-4abd-9cb0-d553a47de6d9"
id
"chatcmpl-5e8ad9fb-40a7-4024-83a2-fe2d7cceaccf"
is_byok
false
latency
979
model_permaslug
"deepseek/deepseek-v4-pro-20260813"
provider_name
"SiliconFlow"
status
200
total_cost
0.01873212
cache_discount
(null)
upstream_inference_cost
0
provider_name
"SiliconFlow"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
90.00%
Matches word count
n/a
neededClean
false
sentences
20
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
13
10
14
10
15
20
16
20
17
10
18
10
19
10