Stablecoin issuer Tether announced the launch of the QVAC SDK, a fully open-source, cross-platform software development kit designed as a general-purpose AI building block, supporting the running, training, and evolution of artificial intelligence on any device and operating system. Functionally, the SDK supports various AI capabilities, including Large Language Models (LLM), speech recognition, text generation, translation, OCR, and speech synthesis, and provides access through a unified API. It is based on QVAC Fabric (derived from the llama.cpp fork) and integrates local inference engines such as whisper.cpp, Parakeet, and Bergamot. The QVAC SDK reportedly adopts a "local-first" architecture, allowing developers to directly build and run AI applications on terminal devices (such as smartphones, PCs, and servers), achieving unified code deployment across iOS, Android, Windows, macOS, and Linux without requiring adaptation or rewriting for different platforms. In addition, the QVAC SDK also includes built-in peer-to-peer (P2P) capabilities based on the Holepunch technology stack, supporting decentralized model distribution, inference, and future distributed training, reducing reliance on centralized services. Tether stated that it will continue to increase investment to expand the QVAC open-source ecosystem, covering cutting-edge fields such as robotics and brain-computer interfaces, and promoting the shift of AI from cloud-based to on-premises deployment models to meet the demands for privacy, low latency, and high reliability.