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Run: 2026-09-10-01M25DG293BPTCWZNN850WFR3N
Run Details
Model:
DeepSeek V4.1 Flash (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
10.4s
Cost:
$0.001378
Provider:
DeepSeek
Evaluation summary
Score
Evaluator
Details Link
92.31%
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 hammered the mansion windows as Inspector Vale stepped inside. The butler met him with trembling hands and pallid face. A woman's scream had shattered the quiet dinner party upstairs. Lord Ashcroft lay dead in his locked study, blood pooling. No weapon was found, and no footprints marked the rug. Inspector Vale studied the crimson stain near the fireplace grate. The window was closed, yet a cold wind touched him. He noticed a broken teacup beside the victim's outstretched hand. Its contents had dried into a dark, suspicious, bitter residue. A single locked door stood between the corpse and answers. Then the lights flickered, and the butler began to sob. Inspector Vale whispered, "Who among you loved Lord Ashcroft least?" Nobody answered, but every guest avoided the widow's steady gaze. Outside, thunder rolled like a carriage over the gravel drive.
created_at
"2026-09-10T10:23:29.063Z"
9/10/2026, 10:23:29 AM
model
"deepseek/deepseek-v4.1-flash-20260910"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1372
moderation_latency
(null)
generation_time
10413
tokens_prompt
46
tokens_completion
2304
native_tokens_prompt
65
native_tokens_completion
2280
native_tokens_completion_images
(null)
native_tokens_reasoning
2103
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
0.00137775
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1789035809-cUYvPx0zalzeLUbLPfUT"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1789035809-R8WrZ9hpQ2GSNae8mC2E"
upstream_id
"ec94a927-dee4-4e6c-a50d-b9fc70bb4c3f"
provider_responses
0
endpoint_id
"fd104bc8-535a-4d31-a847-a8e402e86a02"
id
"ec94a927-dee4-4e6c-a50d-b9fc70bb4c3f"
is_byok
false
latency
342
model_permaslug
"deepseek/deepseek-v4.1-flash-20260910"
provider_name
"DeepSeek"
status
200
total_cost
0.00137775
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
92.31%
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
20
12
10