Hybrid SSM-Transformer MoE (52B total, 12B active) with 256K context.
Released
Mar 6, 2025
Context window
262K tokens
Max output
Not disclosed
Parameters
52B 12B active
Input price
Not disclosed
Output price
Not disclosed
Prices are first-party list prices in USD at the standard tier. Last verified Oct 30, 2026.
Pricing
Launch priceMar 6, 2025
$0.20 in / $0.40 out
Current price
No longer sold
Specifications
- Developer
- AI21 Labs
- Model type
- Text LLM
- Architecture
- Hybrid
- Parameters
- 52B (12B active)
- Input
- Text
- Output
- Text
- Knowledge cutoff
- Not disclosed
- License
- Custom open license
- API access
- First-party API
- End of life
- Aug 3, 2025
- Capabilities
- Long context Tool use