3B hybrid Mamba-Transformer reasoning model for on-device use with 256K context.
Released
Oct 8, 2025
Context window
262K tokens
Max output
Not disclosed
Parameters
3B
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
No first-party API. This is an open-weights release you can run yourself.
Specifications
- Developer
- AI21 Labs
- Model type
- Text LLM
- Architecture
- Hybrid
- Parameters
- 3B
- Input
- Text
- Output
- Text
- Knowledge cutoff
- Not disclosed
- License
- Apache License 2.0
- API access
- No first-party API
- Capabilities
- Long context Reasoning Small LM