NC Bench
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Run: 2026-02-16-01KHM5W8F3SA2RFYKJ872C279D
Run Details
Model:
DeepSeek V3 (2025-03-24)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
27.4s
Cost:
$0.000178
Provider:
DeepInfra
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 tapped softly on the windowpane, a steady rhythm masking the footsteps creeping up the darkened staircase. A single candle flickered in the study, casting eerie shadows that danced across the leather-bound books lining the shelves. The body lay sprawled across the Persian rug, one hand clutching a crumpled note stained with crimson droplets. Detective Harlan adjusted his hat, his sharp eyes scanning the room for clues hidden beneath the veneer of elegance. The victim’s face was frozen in surprise, lips parted as if to whisper a name lost to the silence. A grandfather clock ticked ominously in the corner, its pendulum swinging like the pendulum of fate itself. The scent of gunpowder lingered in the air, mingling with the faint perfume of roses from the vase. A shattered teacup rested near the fireplace, its delicate shards glinting like secrets waiting to be uncovered. The butler stood rigid by the door, his trembling hands betraying the calm mask of his expression. Outside, the storm grew louder, as if the heavens themselves demanded justice for the life taken too soon.
created_at
"2026-02-16T21:32:33.600839+00:00"
2/16/2026, 9:32:33 PM
model
"deepseek/deepseek-chat-v3-0324"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
588
moderation_latency
(null)
generation_time
27417
tokens_prompt
46
tokens_completion
275
native_tokens_prompt
38
native_tokens_completion
222
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
16
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
0.0001775
router
(null)
provider_responses
0
id
"chatcmpl-RCXswScVONUoVcNAGZvLIhSU"
status
200
is_byok
false
latency
44
endpoint_id
"820376cb-f110-4d56-ab52-5bd6ca269420"
provider_name
"DeepInfra"
model_permaslug
"deepseek/deepseek-chat-v3-0324"
api_type
"completions"
id
"gen-1771277525-xQsPQGhBlCZ4tDIWHjP9"
upstream_id
"chatcmpl-RCXswScVONUoVcNAGZvLIhSU"
total_cost
0.0001775
cache_discount
0.00000104
upstream_inference_cost
0
provider_name
"DeepInfra"
Evaluation details
Result
Evaluator
Details
Meta Data
27.8773%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
18
1
20
2
18
3
19
4
19
5
17
6
18
7
17
8
17
9
18