Claude Fable 5vsSeed 2.1 Turbo
Seed 2.1 Turbo is cheaper than Claude Fable 5 at $0.5/M vs $10/M input tokens.
| Spec | Claude Fable 5 | Seed 2.1 Turbo |
|---|---|---|
| Input price | $10/M tokens | $0.5/M tokens |
| Output price | $50/M tokens | $2.5/M tokens |
| Context window | 1.0M tokens | 262K tokens |
| Weights | Closed | — |
| Free API (OpenRouter) | No | No |
| Released | Jun 2026 | Aug 2026 |
Our Verdict
Claude Fable 5
Seed 2.1 TurboRunner-up
Not enough votes to call it. On the specs, Claude Fable 5 has the edge: bigger model tier, bigger context window, major provider backing.
Seed 2.1 Turbo costs 20x less per token.
Too close to call
API pricing
Cost per 1M tokens
Claude Fable 5
Input
$10.00
Output
$50.00
Seed 2.1 Turbo
Input
$0.50
20× cheaper
Output
$2.50
20× cheaper
Seed 2.1 Turbo is cheaper on both: 20× input, 20× output.
Where to run it
5 hosts
Seed 2.1 Turbo1 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
37%
Claude Fable 5 uses 8.8x more emoji
Claude Fable 5
Seed 2.1 Turbo
60%Vocabulary50%
22wSentence Length27w
0.49Hedging0.27
4.0Bold1.5
3.5Lists2.4
0.58Emoji0.07
1.09Headings1.01
0.05Transitions0.04
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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