Deep Tide TechFlow message: On September 23, the B.AI platform announced the official launch of Claude Opus 5.5, the first model in Anthropic’s latest released Claude 5.5 series, with synchronized access opened on both the API and Web Chat. Built specifically for long-cycle agent programming and complex knowledge work, the model achieves Claude Fable 5.1-level performance on most tasks, while reducing operating costs by about 40% compared to Opus 5. It supports an ultra-long 1M token context window with up to 128K output, and demonstrates leading capabilities in Computer Use and multi-step automation scenarios. Starting today, developers and users can call Claude Opus 5.5 directly through the B.AI platform. Welcome to log in at chat.b.ai/chat to experience it now.