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Run: 2026-09-10-01M25DR8YJHAMG914BASQ6BPBK
Run Details
Model:
DeepSeek V4.1 Flash (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
10.3s
Cost:
$0.001516
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
Rain tapped the window like a nervous finger at midnight. Detective Mara Voss arrived before red lights painted the alley. A body lay beneath a black umbrella, face turned upward. Blood pooled around the victim's throat like a dark halo. No wallet, no phone, no name, only a silver key. Mara knelt, careful not to disturb the silent, watching scene. The victim wore a tailored suit and one missing shoe. A fresh red rose rested on his folded, bloodless hands. Mara whispered softly, "Who leaves flowers after cutting a throat?" Thunder swallowed her question as the old coroner finally arrived. He lifted the rose, sniffed it, paled beneath his mask. Mara asked what he smelled; then he whispered, "My daughter." The silver key in her pocket suddenly felt much heavier. Somewhere nearby, an old church bell began tolling slowly once. Mara knew the killer was not finished with her yet.
created_at
"2026-09-10T10:27:58.087Z"
9/10/2026, 10:27:58 AM
model
"deepseek/deepseek-v4.1-flash-20260910"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
650
moderation_latency
(null)
generation_time
10197
tokens_prompt
46
tokens_completion
2421
native_tokens_prompt
65
native_tokens_completion
2511
native_tokens_completion_images
(null)
native_tokens_reasoning
2316
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
0.00151635
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1789036078-f0UrO91FqwKYK5Q7TSBx"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1789036078-6WIQo5sAQCa207DJA55D"
upstream_id
"bfddf04f-66e5-46d0-b37b-b35066004436"
provider_responses
0
endpoint_id
"fd104bc8-535a-4d31-a847-a8e402e86a02"
id
"bfddf04f-66e5-46d0-b37b-b35066004436"
is_byok
false
latency
326
model_permaslug
"deepseek/deepseek-v4.1-flash-20260910"
provider_name
"DeepSeek"
status
200
total_cost
0.00151635
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepSeek"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
15
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