Tether, the company behind the world’s largest stablecoin USDT, has announced the release of QVAC SDK, a fully open-source software development kit that enables artificial intelligence applications to run directly on user devices. The toolkit eliminates the need for cloud servers by processing data locally. It is designed to function identically across iOS, Android, Windows, macOS, and Linux platforms.
The SDK is built on QVAC Fabric, a fork of llama.cpp, giving it compatibility with the llama.cpp model ecosystem. Supported workloads include text generation, embeddings, and multimodal tasks. Developers can access these capabilities through a single unified interface that also covers optical character recognition, text-to-speech, speech-to-text, vision, and translation functions.
A peer-to-peer layer, powered by the Holepunch stack, underpins decentralized model distribution and delegated inference within the toolkit. Tether says it plans to extend this functionality in future updates to support peer-to-peer swarms for decentralized training and fine-tuning. The additions would further reduce reliance on centralized infrastructure for AI workloads.
Tether CEO Paolo Ardoino framed the launch as a response to the structural limitations of centralized AI systems. “The world is approaching a moment where billions of humans share the planet with billions of autonomous machines and trillions of AI agents,” he said in a statement. He argued that routing every decision through a centralized server would not scale to meet that reality.
Ardoino also cited physical constraints as a fundamental barrier to centralized AI. “The laws of physics alone make centralized AI a dead end: speed-of-light latency, single points of failure, and concentration of control are features of a system designed for a smaller world,” he said. He described QVAC as “the building block of the Stable Intelligence Era.”
The SDK originates from QVAC, an AI research initiative operated under Tether Data that focuses on open, decentralized, and adaptive intelligence systems. Tether has committed to ongoing investment in expanding the QVAC open-source ecosystem over the coming months and years. Planned additions include specialized toolkits targeting robotics and brain-computer interfaces.
The release represents a notable strategic shift for Tether beyond its established stablecoin operations, positioning the firm as a competitor to centralized AI providers. By processing data on-device rather than transmitting it to remote servers, the company is presenting QVAC SDK as a privacy-focused alternative for developers building AI-powered applications.
Originally reported by Decrypt.
