NC Bench
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Run: 2026-02-20-01KHYA1Q3X0MSASW6X388Z3D1N
Run Details
Model:
ByteDance Seed 1.6 Flash
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
57.9s
Cost:
$0.002875
Provider:
Seed
Evaluation summary
Score
Evaluator
Details Link
77.46%
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
A man found his wife dead on the kitchen floor. A knife lay beside her, blade wet with fresh blood. The window was open, letting in a cool night breeze. A footprint mark was visible on the dusty windowsill. The door was locked, suggesting the killer was inside. A detective arrived, his face stern and eyes sharp. He examined the room, noting every small detail. A letter lay on the table, its seal broken by teeth. She had a secret, one that led to her sudden death. The clock stopped, its hands fixed at three a.m.
created_at
"2026-02-20T19:57:22.951Z"
2/20/2026, 7:57:22 PM
model
"bytedance-seed/seed-1.6-flash-20250625"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
418
moderation_latency
(null)
generation_time
57781
tokens_prompt
46
tokens_completion
6431
native_tokens_prompt
119
native_tokens_completion
9554
native_tokens_completion_images
(null)
native_tokens_reasoning
9438
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
0.002875125
router
(null)
provider_responses
0
endpoint_id
"e01a1227-001b-44d4-a376-90850668fa84"
id
"021771617443071ceb2efb7fea58c55155fc9fb92515dcda0e085"
is_byok
false
latency
277
model_permaslug
"bytedance-seed/seed-1.6-flash-20250625"
provider_name
"Seed"
status
200
api_type
"completions"
id
"gen-1771617442-A05TJeGMw0T0gfkPomT9"
upstream_id
"021771617443071ceb2efb7fea58c55155fc9fb92515dcda0e085"
total_cost
0.002875125
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Seed"
Evaluation details
Result
Evaluator
Details
Meta Data
77.46%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
10
1
10
2
10
3
9
4
9
5
9
6
8
7
11
8
11
9
9