Apertus 1.5 adds image and audio input, thinking mode and 262k context
Key points
- Updated 8B and 70B weights released on Hugging Face July 24, 2026, under Apache 2.0 license.
- Context window grows to 262,144 tokens, four times Apertus 1.0; models accept images and audio but output only text.
- Post-training includes Swiss Legal parity with leading open-weight models; 8B reportedly matches GPT-OSS-20B on translation.
Why it matters for marketers: Content teams can test image and audio input and longer documents on open weights, with Apache 2.0 licensing for commercial use.