PrismML: Ternary Bonsai 2 9B

Ternary Bonsai 2 9B is PrismML’s compact, open-weight language model for conversational AI, reasoning, and tool use. Built on Qwen3.5, it uses ternary weights packed into 2 bits for efficient inference. It accepts text and image input. Its 262K-token context window supports long conversations and document-heavy workflows, with up to 64K output tokens per response.

Ternary Bonsai 2 9B has a 262,144 token context window.

Ternary Bonsai 2 9B accepts text and images as input and returns text.

Ternary Bonsai 2 27B is another text model from PrismML.

Ternary Bonsai 2 9B was released on October 16, 2026.