Saturday, August 23, 2025

OpenCUA’s open supply computer-use brokers rival proprietary fashions from OpenAI and Anthropic


Need smarter insights in your inbox? Join our weekly newsletters to get solely what issues to enterprise AI, knowledge, and safety leaders. Subscribe Now


A brand new framework from researchers at The College of Hong Kong (HKU) and collaborating establishments gives an open supply basis for creating sturdy AI brokers that may function computer systems. The framework, referred to as OpenCUA, consists of the instruments, knowledge, and recipes for scaling the event of computer-use brokers (CUAs).

Fashions educated utilizing this framework carry out strongly on CUA benchmarks, outperforming current open supply fashions and competing carefully with closed brokers from main AI labs like OpenAI and Anthropic.

The problem of constructing computer-use brokers

Pc-use brokers are designed to autonomously full duties on a pc, from navigating web sites to working advanced software program. They’ll additionally assist automate workflows within the enterprise. Nonetheless, probably the most succesful CUA techniques are proprietary, with important particulars about their coaching knowledge, architectures, and improvement processes stored non-public.

“As the dearth of transparency limits technical developments and raises security issues, the analysis neighborhood wants really open CUA frameworks to check their capabilities, limitations, and dangers,” the researchers state in their paper.


AI Scaling Hits Its Limits

Energy caps, rising token prices, and inference delays are reshaping enterprise AI. Be a part of our unique salon to find how prime groups are:

  • Turning power right into a strategic benefit
  • Architecting environment friendly inference for actual throughput positive factors
  • Unlocking aggressive ROI with sustainable AI techniques

Safe your spot to remain forward: https://bit.ly/4mwGngO


On the similar time, open supply efforts face their very own set of hurdles. There was no scalable infrastructure for amassing the various, large-scale knowledge wanted to coach these brokers. Current open supply datasets for graphical consumer interfaces (GUIs) have restricted knowledge, and lots of analysis tasks present inadequate element about their strategies, making it troublesome for others to copy their work.

In response to the paper, “These limitations collectively hinder advances in general-purpose CUAs and prohibit a significant exploration of their scalability, generalizability, and potential studying approaches.”

Introducing OpenCUA

OpenCUA framework Supply: XLANG Lab at HKU

OpenCUA is an open supply framework designed to deal with these challenges by scaling each the info assortment and the fashions themselves. At its core is the AgentNet Software for recording human demonstrations of laptop duties on totally different working techniques.

The software streamlines knowledge assortment by operating within the background on an annotator’s private laptop, capturing display movies, mouse and keyboard inputs, and the underlying accessibility tree, which gives structured details about on-screen components. This uncooked knowledge is then processed into “state-action trajectories,” pairing a screenshot of the pc (the state) with the consumer’s corresponding motion (a click on, key press, and many others.). Annotators can then evaluation, edit, and submit these demonstrations.

AgentNet software Supply: XLang Lab at HKU

Utilizing this software, the researchers collected the AgentNet dataset, which comprises over 22,600 activity demonstrations throughout Home windows, macOS, and Ubuntu, spanning greater than 200 functions and web sites. “This dataset authentically captures the complexity of human behaviors and environmental dynamics from customers’ private computing environments,” the paper notes.

Recognizing that screen-recording instruments elevate vital knowledge privateness issues for enterprises, the researchers designed the AgentNet Software with safety in thoughts. Xinyuan Wang, co-author of the paper and PhD pupil at HKU, defined that they applied a multi-layer privateness safety framework. “First, annotators themselves can totally observe the info they generate… earlier than deciding whether or not to submit it,” he instructed VentureBeat. The info then undergoes guide verification for privateness points and automatic scanning by a big mannequin to detect any remaining delicate content material earlier than launch. “This layered course of ensures enterprise-grade robustness for environments dealing with delicate buyer or monetary knowledge,” Wang added.

To speed up analysis, the crew additionally curated AgentNetBench, an offline benchmark that gives a number of appropriate actions for every step, providing a extra environment friendly technique to measure an agent’s efficiency.

A brand new recipe for coaching brokers

The OpenCUA framework introduces a novel pipeline for processing knowledge and coaching computer-use brokers. Step one converts the uncooked human demonstrations into clear state-action pairs appropriate for coaching vision-language fashions (VLMs). Nonetheless, the researchers discovered that merely coaching fashions on these pairs yields restricted efficiency positive factors, even with massive quantities of information.

OpenCUA chain-of-thought pipeline Supply: XLang Lab at HKU

The important thing perception was to enhance these trajectories with chain-of-thought (CoT) reasoning. This course of generates an in depth “internal monologue” for every motion, which incorporates planning, reminiscence, and reflection. This structured reasoning is organized into three ranges: a high-level statement of the display, reflective ideas that analyze the scenario and plan the subsequent steps, and eventually, the concise, executable motion. This strategy helps the agent develop a deeper understanding of the duties.

“We discover pure language reasoning essential for generalizable computer-use basis fashions, serving to CUAs internalize cognitive capabilities,” the researchers write.

This knowledge synthesis pipeline is a common framework that may be tailored by firms to coach brokers on their very own distinctive inner instruments. In response to Wang, an enterprise can file demonstrations of its proprietary workflows and use the identical “reflector” and “generator” pipeline to create the mandatory coaching knowledge. “This enables them to bootstrap a high-performing agent tailor-made to their inner instruments with no need to handcraft reasoning traces manually,” he defined.

Placing OpenCUA to the take a look at

The researchers utilized the OpenCUA framework to coach a spread of open supply VLMs, together with variants of Qwen and Kimi-VL, with parameter sizes from 3 billion to 32 billion. The fashions had been evaluated on a collection of on-line and offline benchmarks that take a look at their skill to carry out duties and perceive GUIs.

The 32-billion-parameter mannequin, OpenCUA-32B, established a brand new state-of-the-art success price amongst open supply fashions on the OSWorld-Verified benchmark. It additionally surpassed OpenAI’s GPT-4o-based CUA and considerably closed the efficiency hole with Anthropic’s main proprietary fashions.

OpenCUA exhibits huge enchancment over base fashions (left) whereas competing with main CUA fashions (proper) Supply: XLANG Lab at HKU

For enterprise builders and product leaders, the analysis affords a number of key findings. The OpenCUA methodology is broadly relevant, bettering efficiency on fashions with totally different architectures (each dense and mixture-of-experts) and sizes. The educated brokers additionally present robust generalization, performing nicely throughout a various vary of duties and working techniques.

In response to Wang, the framework is especially fitted to automating repetitive, labor-intensive enterprise workflows. “For instance, within the AgentNet dataset, we already seize a couple of demonstrations of launching EC2 situations on Amazon AWS and configuring annotation parameters on MTurk,” he instructed VentureBeat. “These duties contain many sequential steps however comply with repeatable patterns.”

Nonetheless, Wang famous that bridging the hole to reside deployment requires addressing key challenges round security and reliability. “The largest problem in actual deployment is security and reliability: the agent should keep away from errors that would inadvertently alter system settings or set off dangerous negative effects past the supposed activity,” he stated.

The researchers have launched the code, dataset, and weights for his or her fashions.

As open supply brokers constructed on frameworks like OpenCUA change into extra succesful, they might basically evolve the connection between information employees and their computer systems. Wang envisions a future the place proficiency in advanced software program turns into much less vital than the power to obviously articulate objectives to an AI agent.

He described two major modes of labor: “offline automation, the place the agent leverages its broader software program information to pursue a activity end-to-end,” and “on-line collaboration, the place the agent responds in real-time and works aspect by aspect with the human, very like a colleague.” Mainly, the people will present the strategic “what,” whereas more and more refined AI brokers deal with the operational “how.”


Related Articles

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest Articles