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Run: 2026-04-25-01KQ2E1JXV3BAW0X36Z29VDYT1
Run Details
Model:
DeepSeek V4 Pro (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1m 4s
Cost:
$0.002747
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 20 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The relentless rain fell in drenching sheets, thoroughly soaking the crime scene long before the overwhelmed forensic team could arrive. Detective Harper crouched beside the body, her very sharp eyes noting the victim's neck, twisted at a grotesquely unnatural angle. A single crimson glove lay near the outstretched hand, pristine and strangely out of place in the wet, grimy setting. The victim wore an expensive emerald silk dress, now cruelly torn and stained with wet mud and something far darker. Harper noticed a faint, lingering scent of expensive jasmine perfume mingling unpleasantly with the sharp metallic tang of fresh blood. She carefully pulled back the delicate lace cuff, revealing a livid bruise that whispered a silent tale of grim violence.
created_at
"2026-04-25T13:42:39.807Z"
4/25/2026, 1:42:39 PM
model
"deepseek/deepseek-v4-pro-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
930
moderation_latency
(null)
generation_time
64002
tokens_prompt
46
tokens_completion
2681
native_tokens_prompt
39
native_tokens_completion
3138
native_tokens_completion_images
(null)
native_tokens_reasoning
2984
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
0.002747025
router
(null)
provider_responses
0
endpoint_id
"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id
"ccb5d9ad-b42c-44c9-a447-d8bb1e3d81c9"
is_byok
false
latency
280
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-1777124559-cui2UzkWjzBco17eRBFk"
session_id
(null)
api_type
"completions"
id
"gen-1777124559-hoNi0pMuvKTpvbq3gRR2"
upstream_id
"ccb5d9ad-b42c-44c9-a447-d8bb1e3d81c9"
total_cost
0.002747025
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
6
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20