# Supersonic Labs releases Julia 1, a 144.3M-parameter open decision model

Digest AI · Generative AI & Models · published 2026-09-26T19:50:57Z

Canonical: https://digestai.news/story/supersonic-labs-releases-julia-1-a-144-3m-parameter-open-decision-mode

## Summary

Supersonic Labs, a Brazilian AI lab, has released Julia 1, a compact decision model with 144.3M parameters. Unlike standard chatbots, Julia 1 does not generate text; instead, it accepts context, a question, and 2 to 20 candidate answers to select one option and return probability scores. The model is built on JHU CLSP’s mmBERT-small encoder and is available on Hugging Face under the Apache 2.0 license. It runs locally on CPUs or BF16-capable GPUs, with an ONNX build supporting browser-based inference via WebGPU.

The lab reports that Julia 1 outperformed TypeSafe’s Jev reference values in three of four benchmark pilots, including AG News and DAIR Emotion. However, it significantly underperformed on the Banking77 dataset, scoring 64/100 compared to Jev’s 87/100 reference. Total cloud GPU training costs were approximately US$104.08. On-device latency tests showed a median of 33.15 ms per decision on an Apple M4 chip, while an Intel Core i5-1235U took 107.83 ms for simpler tasks.

Supersonic Labs notes that Julia 1 is limited to comparing supplied options and cannot handle multi-step calculations or missing facts. A hosted API is planned at $0.025 per million tokens but is not yet open. Julia 2, featuring a proprietary foundation architecture, is currently in development.

## Key points

- Julia 1 is a 144.3M-parameter model released under Apache 2.0 license by Supersonic Labs.
- The model runs on CPUs with a median latency of 33.15 ms on Apple M4 hardware.
- Training cost approximately US$104.08 in cloud GPUs, with a planned API price of $0.025/MTok.

## Why it matters

Julia 1 offers a low-cost, CPU-friendly alternative for classification tasks, enabling local deployment without expensive GPU infrastructure. Its open weights and low latency make it viable for edge devices and privacy-sensitive applications.

## Sources

1. [Supersonic Labs Releases Julia 1: A 144.3M-Parameter Open Decision Model That Runs on a CPU](https://marktechpost.com/2026/09/26/supersonic-labs-releases-julia-1-a-144-3m-parameter-open-decision-model-that-runs-on-a-cpu) (MarkTechPost, 2026-09-26)

## Cite

Digest AI, "Supersonic Labs releases Julia 1, a 144.3M-parameter open decision model", 26 September 2026, https://digestai.news/story/supersonic-labs-releases-julia-1-a-144-3m-parameter-open-decision-mode

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