Zyphra Releases ZAYA1-8B Open-Weight Reasoning Model With Apache 2.0 License

aiai-modelingai-model-releasesai-open-models 2 posts · 2 accounts

Zyphra released ZAYA1-8B, an open-weight reasoning mixture-of-experts model under the Apache 2.0 license. A separate post describing the model said it has 8.4 billion total parameters with 760 million active parameters and scored 89.1 on AIME'26.

From the sources (2 posts)

@wesroth

RT @WesRoth: Zyphra has released ZAYA1-8B, a new open-weights (Apache 2.0) reasoning Mixture of Experts (MoE) model. The model was trained…

@ming_llm

zyphra just dropped zaya1-8b (8.4b total, 760m active). it posts 89.1 on aime'26 and ships apache-2.0 weights. who's running it locally tonight?

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