Audience

Developers who need a local multimodal model for private on-device reasoning, tool use, vision, and agentic workflows

About Bonsai 27B

Bonsai 27B is the new multimodal flagship of the Bonsai family and the first 27B-class model to run on a phone. Based on Qwen3.6 27B, it brings a new capability tier to local devices; multi-step reasoning, structured tool calls, vision tasks, and computer-use agentic loops that stay coherent across many steps. Bonsai 27B comes in two variants. Ternary Bonsai 27B uses ternary weights with FP16 group-wise scaling, giving 1.71 effective bits per weight and a 5.9 GB footprint for the quality-oriented laptop-class version. 1-bit Bonsai 27B uses binary weights with the same group-wise scaling, giving 1.125 effective bits per weight and a 3.9 GB footprint that fits within the memory budget of an iPhone 17 Pro. Both variants run end-to-end across the language network, embeddings, attention, MLPs, and LM head with no higher-precision escape hatches. They are multimodal, with a compact 4-bit vision tower, so on-device workflows can understand screenshots, documents, and camera input.

Integrations

API:
Yes, Bonsai 27B offers API access
No integrations listed.

Ratings/Reviews

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Company Information

PrismML
Founded: 2026
United States
prismml.com/news/bonsai-27b

Videos and Screen Captures

Bonsai 27B Screenshot 1
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Product Details

Platforms Supported
Mac
iPhone
iPad
Training
Documentation
Live Online
Videos
Support
Online

Bonsai 27B Frequently Asked Questions

Q: What kinds of users and organization types does Bonsai 27B work with?
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Bonsai 27B Product Features