Fully open multilingual 8B Apertus model supporting over 1000 languages.
Released
Sep 2, 2025
Context window
65.5K tokens
Max output
Not disclosed
Parameters
8B
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
- Swiss AI Initiative
- Model type
- Text LLM
- Architecture
- Dense
- Parameters
- 8B
- Input
- Text
- Output
- Text
- Knowledge cutoff
- Not disclosed
- License
- Apache License 2.0
- API access
- No first-party API
- Capabilities
- Small LM