Apertus 70B
Unavailable in this round
Language model
Apertus 70B
swiss-ai
- Released
- September 2, 2025
- Data date
- September 26, 2026
- Input
- Text
- Output
- Text
Apertus 70B is the large instruction variant in Swiss AI’s fully open language-model family. Its official card describes 15 trillion pretraining tokens, 1,811 natively supported languages, and open publication of weights, data reconstruction, and training details. A decoder-only architecture, SFT, and QRPO connect the transparent research base to an instruction-tuned release. The context is 65,536 tokens.
Swiss AI trained Apertus 70B from scratch with the AdEMAMix optimizer and xIELU activations. Apertus 8B is the smaller family partner with the same language coverage but its own weight checkpoint.
Our tests
SVG short test
One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.
Popularity
38.1 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Input | Documented modalities. Retrieved September 26, 2026. |
| Output | Documented modalities. Retrieved September 26, 2026. |
| Additional source | Hugging Face · Apertus 70B model card · Editorial description reviewed October 4, 2026 |
| Additional source | Apertus technical report · Editorial description reviewed October 4, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |