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Run: 2026-04-25-01KQ2DNE81BNYRVTN9NTBPTPHF
Run Details
Model:
DeepSeek V4 Pro (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
7.2s
Cost:
$0.000261
Provider:
DeepSeek
Evaluation summary
Score
Evaluator
Details Link
98.01%
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 clock struck midnight, its chime swallowed by fog. Inspector Hart pulled his coat tight against the damp chill. A single gas lamp flickered outside the abandoned theatre door. Blood had dried in a jagged line across the cobblestones. He knelt and touched the stain, its coldness confirming death. Inside, the stage lights were still burning a weak yellow. A woman lay centre stage, draped in a crimson gown. Her glassy eyes stared up at the painted plaster ceiling. A single pearl earring rested in her pale, open palm. The other was missing, a tiny clue in the hush. Hart's partner, Graves, emerged from shadows with a silent nod. Neither man spoke the name they both already knew. The Phantom of the Majestic had claimed another soul tonight.
created_at
"2026-04-25T13:36:01.797Z"
4/25/2026, 1:36:01 PM
model
"deepseek/deepseek-v4-pro-20260423"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
742
moderation_latency
(null)
generation_time
7173
tokens_prompt
46
tokens_completion
333
native_tokens_prompt
39
native_tokens_completion
280
native_tokens_completion_images
(null)
native_tokens_reasoning
117
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
0.000260565
router
(null)
provider_responses
0
endpoint_id
"d084170b-dd99-4e53-9ae1-b63881f3cfbf"
id
"42c48e59-235e-45ea-9de1-be5e91c052c2"
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-1777124161-jnlrnh3C6wmQMgrGETAk"
session_id
(null)
api_type
"completions"
id
"gen-1777124161-5oyZJX5jn2SYtlp6aaGl"
upstream_id
"42c48e59-235e-45ea-9de1-be5e91c052c2"
total_cost
0.000260565
cache_discount
(null)
upstream_inference_cost
0
provider_name
"DeepSeek"
response_cache_source_id
(null)
Evaluation details
Result
Evaluator
Details
Meta Data
98.01%
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
9
12
10