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Mini toolsTernary Bonsai Image 4B
By PrismML
Ternary Bonsai Image 4B is the quality-oriented variant in PrismML’s Bonsai Image 4B family, announced on 26-05-2026. Like the 1-bit version, it is built from FLUX.2 Klein 4B, but it uses ternary {-1, 0, +1} transformer weights with FP16 group-wise scaling, giving 1.71 effective bits per weight. The extra zero state improves representational flexibility, visual quality, and prompt fidelity while keeping the diffusion-transformer footprint to 1.21 GB, or 6.4x smaller than the FP16 FLUX.2 Klein 4B transformer. PrismML reports that it retains 95% of FLUX.2 Klein 4B benchmark performance and supports local generation on Apple Silicon devices and CUDA GPUs, with open weights and code planned under Apache 2.0.
New
Image
Gen 4
Overview
Ternary Bonsai Image 4B is PrismML’s open-weight compressed image-generation model that trades slightly larger size for stronger visual quality and prompt fidelity.
About PrismML
Industry:
Artificial Intelligence
Company Size:
6
Location:
Pasadena, California, US
Website:
prismml.com
Last updated: June 2, 2026
