GPT-5.6 SolvsSeed 2.1 Turbo
Seed 2.1 Turbo is cheaper than GPT-5.6 Sol at $0.5/M vs $5/M input tokens.
| Spec | GPT-5.6 Sol | Seed 2.1 Turbo |
|---|---|---|
| Input price | $5/M tokens | $0.5/M tokens |
| Output price | $30/M tokens | $2.5/M tokens |
| Context window | 1.1M tokens | 262K tokens |
| Released | Jul 2026 | Aug 2026 |
Our Verdict
GPT-5.6 Sol
Seed 2.1 TurboRunner-up
Not enough votes to call it. On the specs, GPT-5.6 Sol has the edge: bigger model tier, bigger context window, major provider backing.
Seed 2.1 Turbo costs 12x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.6 Sol
Input
$5.00
Output
$30.00
Seed 2.1 Turbo
Input
$0.50
10× cheaper
Output
$2.50
12× cheaper
Seed 2.1 Turbo is cheaper on both — 10× input, 12× output
Writing DNA
Style Comparison
Similarity
42%
GPT-5.6 Sol uses 2.9x more hedging
GPT-5.6 Sol
Seed 2.1 Turbo
63%Vocabulary50%
15wSentence Length27w
0.79Hedging0.27
3.4Bold1.5
3.8Lists2.4
0.03Emoji0.07
0.95Headings1.01
0.08Transitions0.04
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
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