[Tencent Hy4 Officially Launches on B.AI, API and Web Chat Available Simultaneously with 50% Discount] DeepFlow TechFlow reports that on November 4th, B.AI announced the official launch of Tencent Hy4, a new language model developed for multi-step Agent workflows and long-duration productivity tasks. The API and Web Chat are simultaneously available. Hy4 incorporates visual understanding capabilities for the first time, supporting text and image input, and features a 1M Token ultra-long context window, covering software development, document and chart analysis, and complex office Agent tasks. It demonstrates stable performance in long-link inference and function call scenarios. For developers who need to continuously process multi-step tasks, cross-document analysis, and office automation, Hy4 provides a new option that balances context length and visual understanding. B.AI is simultaneously offering an official 50% discount, valid until December 31, 2026, 23:59:59 (SGT), further lowering the cost barrier for high-frequency calls and large-scale Agent deployment. Welcome to chat.b.ai/chat.