Run: 2026-02-20-01KHYA8ME7ZSVJ99QTP4NVY0N0

Run Details

Model:
ByteDance Seed 1.6 Flash
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
12.2s
Cost:
$0.000747
Provider:
Seed

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

AI
Dawn's pale light filtered through the dirty window, highlighting dust motes spinning slowly in the air above the cluttered desk. A loud thud from the next room made the lamp on the table sway, casting flickering shadows on the wall. Dr. Marcus Hale, 52, pushed back his wooden chair slowly, his brow furrowed, and stood to investigate the unexpected noise.
created_at"2026-02-20T20:01:09.586Z" 2/20/2026, 8:01:09 PM
model"bytedance-seed/seed-1.6-flash-20250625"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency427
moderation_latency(null)
generation_time12108
tokens_prompt46
tokens_completion1749
native_tokens_prompt119
native_tokens_completion2459
native_tokens_completion_images(null)
native_tokens_reasoning2378
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.000746625
router(null)
provider_responses
0
endpoint_id"e01a1227-001b-44d4-a376-90850668fa84"
id"021771617669718e14146857e7ceaf6846d2c1b56e6ac772dd21a"
is_byokfalse
latency265
model_permaslug"bytedance-seed/seed-1.6-flash-20250625"
provider_name"Seed"
status200
api_type"completions"
id"gen-1771617669-Vryf9RQoHKDybFQ9Uor2"
upstream_id"021771617669718e14146857e7ceaf6846d2c1b56e6ac772dd21a"
total_cost0.000746625
cache_discount(null)
upstream_inference_cost0
provider_name"Seed"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences3
wordCounts
020
120
220