Apertus 1.5 adds image and audio understanding to 8B and 70B models
Apertus 1.5 extends the 8B and 70B Apertus 1.0 models with image and audio understanding, an optional thinking mode, a 262,144-token context window, improved instruction-following, and better tool use. The updated weights were released to Hugging Face on July 24, 2026 under an Apache 2.0 license.
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