GS Caltex Launches In-House Generative AI Platform ‘AIU’

GS Caltex CEO Hur Sae-hong attends a Generative AI training session for its executives at GS Caltex headquarters in GS Tower on July 4.

GS Caltex announced on July 8 the launch of its in-house generative AI platform ‘AIU’ as part of ongoing efforts to accelerate the company’s digital transformation (DX).

The name AIU combines ‘AI’ for artificial intelligence with ‘U’ for yu (油: oil), symbolizing the company’s strategy of integrating AI technology into the traditional refining business for enhanced competitiveness.

Implemented to provide a secure and user-friendly environment for utilizing generative AI in daily work processes, AIU enables employees to apply a variety of AI tools without uploading company data or proprietary knowledge to external services.

In particular, AIU was designed to empower employees to easily develop AI agents by combining generative AI technologies with internal company data. These AI agents - intelligent digital assistants capable of making decisions and taking action without direct human instructions — can be built even by employees without technical backgrounds, using intuitive no-code or low-code tools and minimal coding.

This means applications that once took professional developers a month to complete can now be created by employees in under a week.

Additionally, employees can share their AI agents on the AIU platform, making them accessible for reuse and customization by colleagues.

GS Caltex conducted a Generative AI training session for its executives, including CEO Hur Sae-hong at its headquarters in GS Tower on July 4.

Major functions of GS Caltex’s generative AI platform “AIU.” (Photos: GS Caltex)

A GS Caltex representative stated, “Through AIU, we’ve created an environment where employees can actively engage with generative AI and transform how they work,” adding, “We will continue to foster a culture of employee-led AI adoption and build a more efficient, data-driven workplace.”

Having positioned Digital Transformation (DX) as a key pillar of its Deep Transformation strategy aimed at sustainable and profitable growth, GS Caltex continues to strengthen its digital foundation through data collection and systems development.

In 2025, the company is advancing its efforts through Digital & AI Transformation (DAX), a strategic initiative that integrates Digital Transformation (DX) and AI Transformation (AX) to establish a more evolved way of working and secure a competitive edge in the AI era.

DAX sees digital and AI capabilities as complementary forces, enabling the company to transform into an AI-driven, intelligent organization.

By integrating AI technologies with the data and systems developed through DX, DAX pairs AI-generated suggestions with human judgment to accelerate decision-making.

It also fosters a new model of human-AI collaboration, where AI serves as a virtual coworker that supports tasks such as data collection, analysis, and report preparation, allowing employees to focus more on creative problem-solving and strategic thinking.

By actively integrating generative AI across its operations, GS Caltex is propelling its AI-driven Digital Transformation to the next level.

This push to redefine the way work is done will help create an environment where employees can focus on creative, high-value contributions.

GS Caltex Expands Immersion Cooling Business to Data Centers

GS Caltex is making a full-scale push to grow its immersion cooling business by supplying the high-performance fluid to LG Uplus.

On June 26, GS Caltex announced that it has begun supplying immersion cooling fluid to the demonstration room at LG Uplus’s hyperscale data center, Pyeongchon 2 Center.

The two companies have also launched a joint initiative to verify the stability and efficiency of AI server operations in an immersion cooling environment.

Immersion cooling is a technology that cools heat-generating electronic devices such as servers and batteries by submerging them in a non-conductive liquid.

It is gaining traction as a promising next-generation cooling solution, offering higher energy efficiency and greater capacity to manage the high thermal output of AI servers compared to traditional air-cooling methods.

The GS Caltex immersion cooling fluid supplied to the LG Uplus data center is ‘Kixx Immersion Fluid S 30’, which delivers the operational stability required by modern high-density data centers while minimizing impact on human health and the environment.

It is a high-flash-point fluid (above 250°C), primarily composed of poly-alpha olefin (PAO), a compound also used in coolants for fighter jet electronic systems, lubricants for pharmaceutical and food manufacturing facilities, and as an ingredient in cosmetics.

A GS Caltex representative stated, “Through this initiative, we are able to further enhance the efficiency and sustainability of data centers through immersion cooling solutions.”

They added, “We will continue developing the technology and expanding the market to improve energy efficiency across the data center industry.”

Since launching Korea’s first immersion cooling fluid, ‘Kixx Immersion Fluid S’, in 2023, GS Caltex has formed a broad range of industry partnerships within the domestic and international data center ecosystem, including the current collaboration with LG Uplus, to validate its products and support market growth.

To date, GS Caltex has conducted multiple verification tests on the compatibility and stability of its immersion cooling fluid with relevant systems, working with Korean companies such as Databean, an immersion cooling solutions provider; SDT, a digital transformation and quantum standards technology company; and Samhwa Ace, a data center HVAC firm.

In 2024, GS Caltex supplied immersion cooling fluid to a Samsung SDS data center.

In June 2025, it partnered with Supermicro, a global server manufacturer based in the United States, to establish an immersion cooling system at the GS Caltex R&D Center in Daejeon, where internal evaluations are also underway.

Additionally, in 2024, GS Caltex expanded its immersion cooling lineup into four categories, enabling the products’ application not only in data centers but also in electric vehicle batteries and energy storage systems (ESS).

The company will continue to strengthen industry collaboration to supply immersion cooling fluids and validate their performance across a range of sectors.