Weibo's new open source AI model VibeThinker-1.5B outperforms DeepSeek-R1 on $7,800 post-training budget
PositiveTechnology

In a notable development in the field of artificial intelligence, Weibo has introduced its open-source model, VibeThinker-1.5B, which boasts 1.5 billion parameters and has demonstrated superior performance compared to Alibaba's DeepSeek-R1, which has 671 billion parameters. Released in late 2025, VibeThinker-1.5B is available for free download on platforms like Hugging Face, GitHub, and ModelScope, allowing researchers and developers to utilize it for both academic and commercial purposes. This model's ability to achieve benchmark-topping reasoning performance in math and code tasks, despite its compact size, highlights the rapid advancements in AI technology. The implications of this release extend beyond mere performance metrics; it represents a shift towards more accessible AI tools that can empower a broader range of users, fostering innovation and collaboration in the tech community.
— via World Pulse Now AI Editorial System
