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Run: 2026-04-25-01KQ2E8AGAWV7Q8AVZF9PFYV7S
Run Details
Model:
DeepSeek V4 Pro (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
8.6s
Cost:
$0.000237
Provider:
DeepSeek
Evaluation summary
Score
Evaluator
Details Link
0.29%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 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 relentless sheets against the tall windows of the old manor house that evening. A single gunshot cracked through the storm’s roar, sharp and sudden as a snapped bone. Lady Margaret collapsed onto the Persian rug, her silk gown blooming with brilliant crimson roses. Every guest in the drawing room froze, their faces pale masks of disbelief and dawning horror. The detective, a quiet man with tired eyes, knelt beside her still and lifeless form. He noted the locked door, the open window, and the faint scent of jasmine in the air. No one could have entered or left that room without being seen by the entire party. Yet the silver candlestick on the mantel held a single, still-warm fingerprint that wasn’t hers.
created_at
"2026-04-25T13:46:20.557Z"
4/25/2026, 1:46:20 PM
model
"deepseek/deepseek-v4-pro-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1146
moderation_latency
(null)
generation_time
8548
tokens_prompt
46
tokens_completion
307
native_tokens_prompt
39
native_tokens_completion
253
native_tokens_completion_images
(null)
native_tokens_reasoning
97
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
0.000237075
router
(null)
provider_responses
0
endpoint_id
"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id
"dd54fa45-a183-4323-957e-2aa3485f8b32"
is_byok
false
latency
278
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-1777124780-CbPsWC1uIE5gcV6SS40Z"
session_id
(null)
api_type
"completions"
id
"gen-1777124780-8SkwTBqO66lK95z1ij80"
upstream_id
"dd54fa45-a183-4323-957e-2aa3485f8b32"
total_cost
0.000237075
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepSeek"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
0.29%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
17
1
15
2
15
3
16
4
15
5
17
6
16
7
15