NC Bench
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Run: 2026-02-16-01KHM5QVTR4AH7GZZZQMD9HWZQ
Run Details
Model:
DeepSeek V3 (2025-03-24)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.0s
Cost:
$0.000211
Provider:
SiliconFlow
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 drummed softly on the cobblestones as Inspector Grayson studied the body beneath the flickering streetlamp. A silver locket gleamed against the victim’s throat, its delicate chain broken as if torn in a violent struggle. Blood pooled around the woman’s shoulders, stark crimson against her pale silk gown, the fabric torn near the collar. Footprints led away from the scene, deeper into the alley’s shadows, where the darkness swallowed all traces of movement. The inspector crouched, gloved fingers brushing the locket, noting the initials *E.M.* engraved in flowing script beneath the bloodstains. A muffled cough echoed nearby, followed by the hurried click of heels against wet pavement—someone had seen too much. Grayson stood, his sharp eyes scanning the empty windows above, certain the killer had watched from one. The victim’s vacant stare mirrored the moon, pale and unblinking, as the clock tower chimed midnight with hollow finality.
created_at
"2026-02-16T21:29:47.537752+00:00"
2/16/2026, 9:29:47 PM
model
"deepseek/deepseek-chat-v3-0324"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2022
moderation_latency
(null)
generation_time
4921
tokens_prompt
46
tokens_completion
243
native_tokens_prompt
38
native_tokens_completion
202
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0002115
router
(null)
provider_responses
0
id
"019c685bf1936ac43874281bf03ab170"
status
200
is_byok
false
latency
2020
endpoint_id
"d562908f-c5eb-4a32-9a91-24d53b176fd8"
provider_name
"SiliconFlow"
model_permaslug
"deepseek/deepseek-chat-v3-0324"
api_type
"completions"
id
"gen-1771277381-pgSyNXhf6y84morN7kiZ"
upstream_id
"019c685bf1936ac43874281bf03ab170"
total_cost
0.0002115
cache_discount
(null)
upstream_inference_cost
0
provider_name
"SiliconFlow"
Evaluation details
Result
Evaluator
Details
Meta Data
50.6859%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
17
1
19
2
19
3
19
4
19
5
20
6
17
7
19