OpenAI o3 vs Seed 2.1 Turbo
Compare OpenAI o3 by OpenAI against Seed 2.1 Turbo by ByteDance, tested across 53 shared challenges.
Our Verdict
OpenAI o3
Seed 2.1 TurboRunner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, major provider backing.
Seed 2.1 Turbo is 16x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
OpenAI o3
Input
$10.00
Output
$40.00
Seed 2.1 Turbo
Input
$0.50
20× cheaper
Output
$2.50
16× cheaper
Seed 2.1 Turbo is cheaper on both — 20× input, 16× output
Writing DNA
Style Comparison
Similarity
44%
Seed 2.1 Turbo uses 6.6x more emoji
OpenAI o3
Seed 2.1 Turbo
68%Vocabulary50%
14wSentence Length27w
0.26Hedging0.27
0.7Bold1.5
3.0Lists2.4
0.00Emoji0.07
0.38Headings1.01
0.12Transitions0.04
Based on 16 + 27 text responses
Research
What we learned reading every model
FAQ
